A class of asbestos that includes silicates of magnesium, iron, calcium, and sodium. The fibers are generally brittle and cannot be spun, but are more resistant to chemicals and heat than ASBESTOS, SERPENTINE. (From Hawley's Condensed Chemical Dictionary, 11th ed)
Asbestos. Fibrous incombustible mineral composed of magnesium and calcium silicates with or without other elements. It is relatively inert chemically and used in thermal insulation and fireproofing. Inhalation of dust causes asbestosis and later lung and gastrointestinal neoplasms.
A type of asbestos that occurs in nature as the dihydrate of magnesium silicate. It exists in two forms: antigorite, a plated variety, and chrysotile, a fibrous variety. The latter makes up 95% of all asbestos products. (From Merck Index, 11th ed, p.893)
A lavender, acid-resistant asbestos.
Asbestos, grunerite. A monoclinic amphibole form of asbestos having long fibers and a high iron content. It is used in insulation. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Long, pliable, cohesive natural or manufactured filaments of various lengths. They form the structure of some minerals. The medical significance lies in their potential ability to cause various types of PNEUMOCONIOSIS (e.g., ASBESTOSIS) after occupational or environmental exposure. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p708)
A tumor derived from mesothelial tissue (peritoneum, pleura, pericardium). It appears as broad sheets of cells, with some regions containing spindle-shaped, sarcoma-like cells and other regions showing adenomatous patterns. Pleural mesotheliomas have been linked to exposure to asbestos. (Dorland, 27th ed)
A form of pneumoconiosis caused by inhalation of asbestos fibers which elicit potent inflammatory responses in the parenchyma of the lung. The disease is characterized by interstitial fibrosis of the lung, varying from scattered sites to extensive scarring of the alveolar interstitium.
Neoplasms of the thin serous membrane that envelopes the lungs and lines the thoracic cavity. Pleural neoplasms are exceedingly rare and are usually not diagnosed until they are advanced because in the early stages they produce no symptoms.
Finely powdered native hydrous magnesium silicate. It is used as a dusting powder, either alone or with starch or boric acid, for medicinal and toilet preparations. It is also an excipient and filler for pills, tablets, and for dusting tablet molds. (From Merck Index, 11th ed)
A hydrated form of silicon dioxide. It is commonly used in the manufacture of TOOTHPASTES and as a stationary phase for CHROMATOGRAPHY.
The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.
The thin serous membrane enveloping the lungs (LUNG) and lining the THORACIC CAVITY. Pleura consist of two layers, the inner visceral pleura lying next to the pulmonary parenchyma and the outer parietal pleura. Between the two layers is the PLEURAL CAVITY which contains a thin film of liquid.
Any of the numerous types of clay which contain varying proportions of Al2O3 and SiO2. They are made synthetically by heating aluminum fluoride at 1000-2000 degrees C with silica and water vapor. (From Hawley's Condensed Chemical Dictionary, 11th ed)
Diseases caused by factors involved in one's employment.
Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.
Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.
Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.
Tumors or cancer of the LUNG.
The exposure to potentially harmful chemical, physical, or biological agents by inhaling them.
Substances that increase the risk of NEOPLASMS in humans or animals. Both genotoxic chemicals, which affect DNA directly, and nongenotoxic chemicals, which induce neoplasms by other mechanism, are included.
Supplies used in building.
Relating to the size of solids.
Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.
Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed)
Branch of medicine concerned with the prevention and control of disease and disability, and the promotion of physical and mental health of the population on the international, national, state, or municipal level.
A publication issued at stated, more or less regular, intervals.
A quantitative measure of the frequency on average with which articles in a journal have been cited in a given period of time.
"The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.
The use of statistical methods in the analysis of a body of literature to reveal the historical development of subject fields and patterns of authorship, publication, and use. Formerly called statistical bibliography. (from The ALA Glossary of Library and Information Science, 1983)
The evaluation by experts of the quality and pertinence of research or research proposals of other experts in the same field. Peer review is used by editors in deciding which submissions warrant publication, by granting agencies to determine which proposals should be funded, and by academic institutions in tenure decisions.
The study of the structure, growth, function, genetics, and reproduction of bacteria, and BACTERIAL INFECTIONS.
The profession of writing. Also the identity of the writer as the creator of a literary production.
Any combustible hydrocarbon deposit formed from the remains of prehistoric organisms. Examples are petroleum, coal, and natural gas.
The scientific study of past societies through artifacts, fossils, etc.
The variety of all native living organisms and their various forms and interrelationships.
The field of information science concerned with the analysis and dissemination of data through the application of computers.
An agency in the Executive Branch of the Federal Government. It was created as an independent regulatory agency responsible for the implementation of federal laws designed to protect the environment. Its mission is to protect human health and the ENVIRONMENT.
Individual's rights to obtain and use information collected or generated by others.
Component of the NATIONAL INSTITUTES OF HEALTH. It conducts and supports basic and applied research for a national program in diabetes, endocrinology, and metabolic diseases; digestive diseases and nutrition; and kidney, urologic, and hematologic diseases. It was established in 1948.
The protection, preservation, restoration, and rational use of all resources in the total environment.

Biological effects of naturally occurring and man-made fibres: in vitro cytotoxicity and mutagenesis in mammalian cells. (1/97)

Cytotoxicity and mutagenicity of tremolite, erionite and the man-made ceramic (RCF-1) fibre were studied using the human-hamster hybrid A(L) cells. Results from these fibres were compared with those of UICC Rhodesian chrysotile fibres. The A(L) cell mutation assay, based on the S1 gene marker located on human chromosome 11, the only human chromosome contained in the hybrid cell, has been shown to be more sensitive than conventional assays in detecting deletion mutations. Tremolite, erionite and RCF-1 fibres were significantly less cytotoxic to A(L) cells than chrysotile. Mutagenesis studies at the HPRT locus revealed no significant mutant yield with any of these fibres. In contrast, both erionite and tremolite induced dose-dependent S1- mutations in fibre-exposed cells, with the former inducing a significantly higher mutant yield than the latter fibre type. On the other hand, RCF-1 fibres were largely non-mutagenic. At equitoxic doses (cell survival at approximately 0.7), erionite was found to be the most potent mutagen among the three fibres tested and at a level comparable to that of chrysotile fibres. These results indicate that RCF-1 fibres are non-genotoxic under the conditions used in the studies and suggest that the high mesothelioma incidence previously observed in hamster may either be a result of selective sensitivity of hamster pleura to fibre-induced chronic irritation or as a result of prolonged fibre treatment. Furthermore, the relatively high mutagenic potential for erionite is consistent with its documented carcinogenicity.  (+info)

Chrysotile, tremolite and fibrogenicity. (2/97)

Recently published analyses have shown that the risks of mesothelioma and lung cancer in Quebec chrysotile miners and millers were related to estimated level of fibrous tremolite in the mines where they had worked. An analysis has therefore been made of radiographic changes in men who in 1965 were employed by companies in Thetford Mines where the same question could be examined for fibrogenicity. Of 294 men who met the necessary requirements, 129 had worked in six centrally located mines, where the tremolite content was thought to be high, 81 in 10 peripheral mines where it was thought to be low and 84 in both. The median prevalence of small parenchymal opacities (> or = 1/0) in chest radiographs read by six readers was higher among men ever than never employed in the central mines (13.6% against 7.4%), despite the fact that the mean cumulative exposure was lower in the former (430 mpcf.y vs 520 mpcf.y). After accounting by logistic regression for cigarette smoking, age, smoking-age interaction and cumulative exposure, the adjusted odds ratio for central mine employment was 2.44 (95% lower bound: 1.06). Together with other surveys of asbestos miners and millers, this study suggests that amphibole fibres, including tremolite, are more fibrogenic than chrysotile, perhaps to the same extent that they are carcinogenic, though the data available were not sufficient to address the latter question.  (+info)

Environmental exposure to tremolite and respiratory cancer in New Caledonia: a case-control study. (3/97)

A case-control study on respiratory cancers was conducted in New Caledonia (South Pacific), where a high incidence of malignant pleural mesothelioma had been observed. The disease pattern suggested an environmental exposure to asbestos. The first results showed that, in some areas, tremolite asbestos derived from local outcroppings was used as whitewash (locally named "po"). All cases diagnosed between 1993 and 1995 (including 15 pleural mesotheliomas, 228 lung cancers, and 23 laryngeal cancers) and 305 controls were included in the study. Detailed information on past or present use of the whitewash, residential history, smoking, diet, and occupation was collected. The risk of mesothelioma was strongly associated with the use of the whitewash (odds ratio (OR) = 40.9; 95% confidence interval (CI): 5.15, 325). All Melanesian cases had been exposed. Among Melanesian women, exposure to the whitewash was associated with an increased risk of lung cancer (OR = 4.89; 95% CI: 1.13, 21.2), and smokers exposed to po had an approximately ninefold risk (OR = 9.26; 95% CI: 1.72, 49.7) compared with women who never smoked and had never used the whitewash. In contrast, no association was noted between exposure to po and lung cancer risk among Melanesian men, probably because of lower exposure levels. Among non-Melanesians, the numbers of exposed subjects were too small to assess the effect of exposure to po. There was no indication of elevated risks for the other cancer sites.  (+info)

The quantitative risks of mesothelioma and lung cancer in relation to asbestos exposure. (4/97)

Mortality reports on asbestos exposed cohorts which gave information on exposure levels from which (as a minimum) a cohort average cumulative exposure could be estimated were reviewed. At exposure levels seen in occupational cohorts it is concluded that the exposure specific risk of mesothelioma from the three principal commercial asbestos types is broadly in the ratio 1:100:500 for chrysotile, amosite and crocidolite respectively. For lung cancer the conclusions are less clear cut. Cohorts exposed only to crocidolite or amosite record similar exposure specific risk levels (around 5% excess lung cancer per f/ml.yr); but chrysotile exposed cohorts show a less consistent picture, with a clear discrepancy between the mortality experience of a cohort of xhrysotile textile workers in Carolina and the Quebec miners cohort. Taking account of the excess risk recorded by cohorts with mixed fibre exposures (generally<1%), the Carolina experience looks uptypically high. It is suggested that a best estimate lung cancer risk for chrysotile alone would be 0.1%, with a highest reasonable estimate of 0.5%. The risk differential between chrysotile and the two amphibole fibres for lunc cancer is thus between 1:10 and 1:50. Examination of the inter-study dose response relationship for the amphibole fibres suggests a non-linear relationship for all three cancer endpoints (pleural and peritoneal mesotheliomas, and lung cancer). The peritoneal mesothelioma risk is proportional to the square of cumulative exposure, lung cancer risk lies between a linear and square relationship and pleural mesothelioma seems to rise less than linearly with cumulative dose. Although these non-linear relationships provide a best fit ot the data, statistical and other uncertainties mean that a linear relationship remains arguable for pleural and lung tumours (but not or peritoneal tumours). Based on these considerations, and a discussion fo the associated uncertainties, a series of quantified risk summary statements for different elvels of cumulative exposure are presented.  (+info)

Amphibole fibres in Chinese chrysotile asbestos. (5/97)

Ten chrysotile bulk samples originating from six Chinese chrysotile mines were studied for amphibole fibres. Five of the mines operate on ultramafic rocks whereas one exploits a dolomite-hosted deposit. The asbestos fibre content in lung tissue was examined from seven deceased workers of the Shenyang asbestos plant using these raw materials. The bulk samples were pretreated with acid/alkali-digestion, and thereafter, scanning and transmission electron microscopy, X-ray microanalysis, selected area electron diffraction and X-ray powder diffractometry were used to identify the minerals. Sample preparation of lung tissue involved drying and low-temperature ashing. All of the bulk samples contained amphibole fibres as an impurity. The amphibole asbestos contents were between 0.002 and 0.310 w-%. Tremolite fibres were detected in every sample but anthophyllite fibres were present only in the sample originating from the dolomite-hosted deposit. In comparison, anthophyllite (71%), tremolite (9%) and chrysotile (10%) were the main fibre types in the lung tissue samples indicating faster pulmonary clearance of chrysotile fibres. The total levels ranged from 2.4 to 148.3 million fibres (over 1 microm in length) per gram of dry tissue, and they were consistent with heavy occupational exposure to asbestos.  (+info)

Erionite bodies and fibres in bronchoalveolar lavage fluid (BALF) of residents from Tuzkoy, Cappadocia, Turkey. (6/97)

OBJECTIVES: The high incidence of malignant mesothelioma in some villages of Cappadocia (Turkey) is due to environmental exposure to erionite fibres. The aim was to evaluate the fibre burden in bronchoalveolar lavage fluid (BALF) from inhabitants of an erionite village and compare it with Turkish subjects with or without environmental exposure to tremolite asbestos. METHODS: Ferruginous bodies (FBs) and fibres were measured and analyzed by light and transmission electron microscopy (TEM) in the BALF of 16 subjects originating from Tuzkoy. RESULTS: FBs were detected in the BALF of 12 subjects, with concentrations above 1 FB/ml in seven of them. Erionite was the central fibre of 95.7% of FBs. Erionite fibres were found in the BALF of all subjects, by TEM, and these fibres were low in Mg, K, and Ca compared with erionite from Tuzkoy soil. The mean concentration of erionite fibres in BALF was similar to that of tremolite fibres in Turks with environmental exposure to tremolite. The proportion of fibres longer than 8 microm in BALF represented 35.6% for erionite compared with 14.0% for tremolite. The asbestos fibre concentrations in erionite villagers was not different from that in Turks without environmental exposure to tremolite. CONCLUSION: Analysis of BALF gives information about fibre retention in populations environmentally exposed to erionite for whom data on fibre burden from lung tissue samples are scarce. This may apply to exposed Turks having emigrated to other countries.  (+info)

Dustiness of different high-temperature insulation wools and refractory ceramic fibres. (7/97)

Recent regulations are encouraging the replacement of older types of man-made mineral fibre by more soluble and, thus, less biopersistent compositions. In order for there to be any health benefits from this policy and to gain maximum benefit from such substitutions, the use of the new materials should not increase exposure. The work reported here was undertaken to investigate the use of new high-temperature glass insulation wools in place of refractory ceramic fibres (RCF). Airborne fibre levels occurring during the manufacture of both RCF and calcium magnesium silicate wools (CMS) were compared using measurements of genuine workplace exposure from a routine monitoring operation on the same plant. Exposures during use were compared in one customer facility where RCF and CMS blankets were used for the same task. Further comparisons were made in a laboratory test of dustiness using a "shaking box test". For some manufacturing tasks there are only a few workplace samples and there are few opportunities for genuine comparisons with both RCF and CMS in identical uses. However, both materials produced very similar exposure levels during manufacture, use and in the laboratory test. The novel magnesium silicate fibre was significantly dustier in the laboratory test.  (+info)

p53, p21 and metallothionein immunoreactivities in patients with malignant pleural mesothelioma: correlations with the epidemiological features and prognosis of mesotheliomas with environmental asbestos exposure. (8/97)

The aim of this study is to investigate immunoreactivity for p53, p21 and metallothionein in diffuse malignant pleural mesothelioma (DMPM) and to determine the relationships between the age, sex, asbestos exposure time, survival of DMPM patients with environmental asbestos exposure and immunoreactivity to p53, p21 and metallothionein. Sixty-seven histopathologically-confirmed DMPMs, 38 of whom had environmental and 29 had occupational asbestos exposure, were included. The tumour tissue samples were immunostained with antibodies against p53, p21 and metallothionein. Epidemiological data and the survival times for the DMPM patients with environmental asbestos exposures were obtained from hospital records. Thirty-three per cent of the DMPMs were positive for p53, 35% for p21 and 52% for metallothionein. There was no statistical difference between the histological subtypes of DMPM in terms of immunoreactivity for p53, p21 and metallothionein. For p21 and metallothionein there was a statistically significant difference between the exposure characteristics: patients with environmental asbestos exposure had shown more immunopositivity. There were statistically significant differences between age groups and between asbestos exposure times for metallothionein, and between asbestos exposure times and p21. The patients with positive immunostaining had longer exposure times and were older than those having negative immunostaining. The differences between survival of the patients were not statistically significant in terms of the immunohistochemical results for p53, p21 and metallothionein.  (+info)

Environmental exposure to silicate compounds such as silica and asbestos has been associated with increased autoimmune responses and the development of autoimmune disease in humans. Residents of Libby, MT have experienced significant asbestos exposure due to an asbestos contaminated vermiculite mine near the community over several decades. Residents have developed numerous asbestos-related diseases as well as increased autoimmune responses. However, the exact mechanism by which Libby amphibole asbestos generates autoimmune responses is unclear. To elucidate a possible mechanism for asbestos induced autoimmunity, the cellular effects of Libby amphibole asbestos were characterized in vitro using a phagocytic murine macrophage cell line, which are characteristic of alveolar macrophages. Our results indicate that Libby amphibole asbestos generates oxidative stress in murine macrophages similar to crocidolite asbestos. However, Libby asbestos induces distinct cellular effects compared to crocidolite asbestos
Libby, Montana, a small town nestled in the northwestern corner of the state, is a humble town, a great destination for anglers and hunters. What many people don't know about Libby, is the lurking danger hanging over the heads of the 3,000 or so Libby residents. Located nearby is an old vermiculite mine that has created a health hazard dealing with asbestos. The old mine was used for acquiring vermiculite, that was used for insulation, shingles, and other construction materials. Imbedded in the vermiculite is a form of asbestos that was released into the air when the vermiculite was processed, creating an abundance of the fibers released into the atmosphere around Libby. The health risk, amplified by human activity, has always been a health hazard due to natural geologic deposits of vermiculite containing asbestos, in and around the Libby area.
Synonyms for amphibole in Free Thesaurus. Antonyms for amphibole. 8 words related to amphibole: mineral, amphibole group, amphibolite, nephrite, actinolite, anthophyllite, asbestos, hornblende. What are synonyms for amphibole?
Tremolite is a member of the amphibole group of silicate minerals with composition: ☐Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Tremolite forms a series with actinolite and ferro-actinolite. Pure magnesium tremolite is creamy white, but the color grades to dark green with increasing iron content. It has a hardness on Mohs scale of 5 to 6. Nephrite, one of the two minerals of the gemstone jade, is a green variety of tremolite. The fibrous form of tremolite is one of the six recognised types of asbestos. This material is toxic and inhaling the fibers can lead to asbestosis, lung cancer and both pleural and peritoneal mesothelioma. Fibrous tremolite is sometimes found as a contaminant in vermiculite, chrysotile (itself a type of asbestos) and talc. Tremolite is an indicator of metamorphic grade since at high temperatures it converts to diopside. Tremolite occurs as a result of contact metamorphism of calcium and magnesium rich ...
Gunter takes exception to a recent legal definition of asbestos; but there is more to that story. For over 70 years, the fibrous amphibole that is a major-not trace-constituent in the Vermiculite Mountain vermiculite deposit near Libby, Montana, was called tremolite, sodium-rich tremolite, or sodic tremolite by everyone including the mineralogists and geologists who studied the deposit. During the 1970s, the names of the regulated asbestos minerals, including tremolite asbestos, were entered into the U.S. Code of Federal Regulations. As recent court proceedings have revealed, company geologists, owners, and operators of the vermiculite mine near Libby understood that the asbestiform amphiboles in the mine fell under those regulations. In 1978 and 1997, committees of the International Mineralogical Association published new recommendations for amphibole nomenclature. Based on this new system of nomenclature, most of the amphibole minerals at the Libby mine were reclassified as winchite. When ...
Langer and Nolan, and Mossman and Gee, express several criticisms of our recent review of the amphibole hypothesis. Langer and Nolan suggested that we failed to present the amphibole hypothesis in a developmental perspective. Our objective was to put this hypothesis in a public health perspective. The scope of the amphibole hypothesis has been confusing to many, scientists and laypeople alike. We
The Lincoln County Asbestos Resource Program is a program that was established in 2012 with the mission of reducing exposure to Libby amphibole asbestos that is found within the Libby Asbestos Superfund Site and the surrounding areas of Lincoln County. A key goal is to minimize burden on the community members themselves. The program was developed under the guidance of the City-County Board of Health for Lincoln County and is currently funded through a cooperative agreement/grant from the U.S. EPA ...
We conducted experiments to examine the effect of amphibole-forming hydration reactions on mineral fabric development and the strength of mafic rocks. Both hydrostatic and general shear deformation experiments were conducted on powdered basalt with added water at lower continental crust conditions (800 °C, 1 GPa). Amphibole that formed under hydrostatic conditions exhibits a random lattice-preferred orientation (LPO). In contrast, amphibole formed during deformation exhibits both a strong shape-preferred orientation (SPO) and LPO with a [001] maximum aligned subparallel to the shear direction. Plagioclase in both hydrostatic and deformed samples shows a very weak to random LPO. At low effective strain rates (10−5 s−1 to 10−6 s−1), the stress exponent is ≈1-1.5, consistent with deformation accommodated by diffusion creep. The correlation of the SPO and LPO coupled with the rheological evidence for diffusion creep indicates that the amphibole fabric results from oriented grain growth ...
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Anthophyllite is an amphibole mineral: ☐Mg2Mg5Si8O22(OH)2 (☐ is for a vacancy, a point defect in the crystal structure), magnesium iron inosilicate hydroxide. Anthophyllite is polymorphic with cummingtonite. Some forms of anthophyllite are lamellar or fibrous and are classed as asbestos. The name is derived from the Latin word anthophyllum, meaning clove, an allusion to the most common color of the mineral. Anthophylite is the product of metamorphism of magnesium-rich rocks, especially ultrabasic igneous rocks and impure dolomitic shales. It also forms as a retrograde product rimming relict orthopyroxenes and olivine, and as an accessory mineral in cordierite-bearing gneisses and schists. Anthophyllite also occurs as a retrograde metamorphic mineral derived from ultramafic rocks along with serpentinite. Geographically, it occurs in Pennsylvania, southwestern New Hampshire, central Massachusetts, Franklin, North Carolina, and in the Gravelly Range and Tobacco Root Mountains of southwest ...
Abstract: There has been considerable discussion in the literature related to the use of standard optical properties of commercial asbestos minerals for the classification of amphibole minerals found in raw materials as either asbestiform or as non-asbestos (1-4). The goal of this study was to ascertain if there is a relationship between particle morphology and extinction characteristics in monoclinic tremolite amphiboles. Six tremolitic amphiboles were chosen for this study: three are fibrous (five from natural sites (i.e., mining locales)) and one is the NIST SRM 1867a tremolite standard. The morphology of these tremolites ranged from blocky to asbestiform. A particle-by-particle analysis was performed to determine extinction characteristics and the number of EPA-defined asbestos characteristics. In general, zero or near-zero extinction angles correlate to the number of asbestiform characteristics. Exceptions to this occur when a non-fibrous tremolite has (100) parting as a result of twinning ...
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Ferro-edenite is an uncommon amphibole mineral. It is almost exactly the same as the more common amphibole mineral edenite, but contains more iron than magnesium thus the name ferro-edenite (ferro is latin for iron). The two minerals form a solid solution series in which the iron and magnesium substitute for each other. Edenite is the magnesium rich member. The two are similar in properties except that ferro-edenite is generally darker and denser. Ferro-edenite is related to the more well known amphibole, hornblende. Although hornblende is no longer an official mineral, it still serves as a general name for iron, magnesium, aluminum and calcium rich amphiboles of which ferro-edenite is one. In fact ferro-edenite had been referred to as ferro-edenitic hornblende before its adoption as an official and distinct mineral. Amphiboles like ferro-edenite, edenite and hornblende serve as important petrographic minerals. Their presence allows petrologists (rock scientists) to accurately gauge the ...
Amphiboles along the tremolite-pargasite join have been hydrothermally synthesized at 900°C, 3 kbar. Run products were characterized by optical and electron microscopy, powder X-ray diffraction and infrared spectroscopy. Under the experimental conditions used, there is complete solid-solution between tremolite and pargasite and the variation of cell parameters is linear as a function of composition. The infrared spectra in the principal OH-stretching region are consistent with the predictions of Hawthorne (1997) on local bond-valence grounds, and show strong short-range order of cations at the octahedral sites and strong coupling between Al at T(l) and Na at A. ...
Hornblende is an important constituent of many igneous rocks. It is also an important constituent of the rock known as amphibolite, formed by metamorphism of basalt.. Actinolite is an important and common member of the monoclinic series, forming radiating groups of acicular (needle-like) crystals of bright green or grayish-green color. It occurs frequently as a constituent of greenschists. The name (from Greek ακτις/aktis, a ray and λιθος/lithos, a stone) is a translation of the old German word Strahlstein (radiated stone).. Glaucophane, crocidolite, riebeckite and arfvedsonite form a somewhat special group of alkali amphiboles. The first two are blue fibrous minerals, with glaucophane occurring in blueschists and crocidolite (blue asbestos) in ironstone formations-both result from dynamo-metamorphic processes. The latter two are dark green minerals that occur as original constituents of igneous rocks rich in sodium, such as nepheline-syenite and phonolite.. Pargasite is a rare, ...
This testimony concerns the response to NIOSH to the OSHA notice of proposed rulemaking to remove nonasbestiform tremolite (14567738), anthophyllite (17068789), and actinolite (77536664) from the asbestos standard. The testimony contains comments on a review of the literature by OSHA, studies by OSHA on exposure to nonasbestiform minerals, and fiber characteristics studies reviewed by OSHA. The te
T H Agriculture & Nutrition, L.L.C. used asbestos, exposing people to the dangerous mineral. Learn about financial assistance for victims at Mesothelioma.com.
Armstrong World Industries incorporated asbestos into its insulation and other construction products for much of the 20th century.
Many products contain asbestos, especially products used in the building industry. See a list of products including Hardiflex, Hardiplank and more.
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Tyler Pipe manufactured cast iron soil pipes and fittings for waste removal. The company was once owned by Swan Transportation but is now owned by McWane, Inc. in Birmingham, Alabama.
Convert how many grams of saturated Fats (g sat. fat) from self raising flour (SRF) are in 1 gram of dietary fiber (g diet. fibre). This online self raising flour (SRF) conversion tool is for culinary arts schools and certified chefs. Convert self raising flour (srf) measuring units from grams of dietary fibers ( g diet. fibre ) into grams of saturated Fats ( g sat. fat ), volume vs weights measures, including dietary information and nutritional values instantly. The self raising flour (SRF) calculator can be used by culinarian cooks or in schools of culinary art classes or culinary colleges and even in international culinary education and pastry schools. 1 gram of dietary fiber g diet. fibre equals = 0.10 grams of saturated Fats g sat. fat in culinary training exactly.
Tremolite Magnesiocoulsonite. Comments: Black grains of magnesiocoulsonite with green chromian tremolite. Metallic bronze grain of thiospinelid of kalininite-florensovite series is visible in the upper right corner of the image ...
Ferripedrizite, a new monoclinic BLi amphibole end-member from the Eastern Pedriza Massif, Sierra de Guadarrama, Spain, and a restatement of the nomenclature of Mg-Fe-Mn-Li amphiboles 976 ...
Oberti R , Camara F , Caballero J M , Ottolini L , The Canadian Mineralogist , 41 (2003) p.1345-1354, Sodic-ferri-ferropedrizite and ferri-clinoferroholmquistite: mineral data and, degree of order of the A-site cations in Li-rich amphiboles, Sequence number in the CNR-IGG database: SEQ 1039 ...
Amphibole Group. Mg-Fe-Mn-Li Clino-Amphibole Subgroup. Many tirodites described in the literature are in fact manganocummingtonite.
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At its peak, the Libby mine may have provided 80 percent of the worlds vermiculite, most of which was contaminated with what would become known as Libby Amphibole Asbestos. The contamination was not limited just to the mine site; Libby residents were able to pick up free truckloads of asbestos-contaminated vermiculite for use at home. The vermiculite was used to pave driveways and in public areas (boat ramps, ice rink, running track, baseball fields and school yards). Children played in piles of vermiculite that could be found throughout the community. Also, attic insulation contaminated with Libby asbestos may still be in schools, businesses and as many as 35 million homes around the United States alone ...
Properly removing vermiculite from your home or office building requires expert assistance to ensure all traces of the harmful material is completely cleaned, and no harmful airborne fibres manage to spread. At Scott Asbestos, our team of professional cleaners are ready to take every precaution to ensure the vermiculite contamination in your property is properly dealt with. Vancouver, along with a number of other major residential areas of the lower mainland features a number of homes and properties that were built with materials containing vermiculite. Between 1970 and the early 1990s, a large number of construction companies made use of the vermiculite found in one mine in Montana. Unfortunately, it was later discovered that the vermiculite found in this mine had been contaminated with tremolite asbestos. Despite its effective insulation properties and the ease in which it can be installed, vermiculite is among one of the most hazardous building materials which can be found in BC homes and ...
A deposit in Libby, Montana was the largest in the world and 70 percent of all vermiculite sold in the United States between 1919 and 1990 was from Libby. There was a problem, though, with this source of vermiculite. It was contaminated with tremolite asbestos, a particularly dangerous form of asbestos. When the vermiculite was mined, millions of asbestos fibers were sent into the air sickening miners, their families, and townspeople.. Not only was asbestos sent into the air, ore from the mine was donated to schools to make running tracks, an ice rink, and was mixed with other materials to make baseball fields. Every day kids were exposed to asbestos when they played outside. A popping plant, where ore was taken to expand, was located next to baseball fields. This created more dust for children to inhale while they were playing.. W.R. Grace, the company that owned and operated the mine, knew that the vermiculite was contaminated with asbestos and was dangerous. It kept this information from ...
The accurate measurement of annual average mineral fiber concentrations at various air sampling sites provides the best index of non-occupational inhalation exposure to fibers in a community located near an industrial source of airborne amphibole fibers. The transmission electron microscope analysis of enough individual high volume air samples to provide annual average fiber concentrations is not feasible because of the great time and expense required. X-ray diffraction analysis of air samples collected on membrane filters over periods of several days offers a reliable measurement of amphibole mineral mass concentration. An excellent linear correlation (r = 0.94 for N = 12) exists between the amphibole mass concentrations (x-ray diffraction) and amphibole fiber concentrations (transmission electron microscope). The correlation equation is used to calculate amphibole fiber concentrations from over 300 x-ray diffraction analyses. The accuracy and precision of both techniques are discussed as well ...
The accurate measurement of annual average mineral fiber concentrations at various air sampling sites provides the best index of non-occupational inhalation exposure to fibers in a community located near an industrial source of airborne amphibole fibers. The transmission electron microscope analysis of enough individual high volume air samples to provide annual average fiber concentrations is not feasible because of the great time and expense required. X-ray diffraction analysis of air samples collected on membrane filters over periods of several days offers a reliable measurement of amphibole mineral mass concentration. An excellent linear correlation (r = 0.94 for N = 12) exists between the amphibole mass concentrations (x-ray diffraction) and amphibole fiber concentrations (transmission electron microscope). The correlation equation is used to calculate amphibole fiber concentrations from over 300 x-ray diffraction analyses. The accuracy and precision of both techniques are discussed as well ...
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Asbestos is a naturally occurring rock forming mineral silicate in fibrous form belonging to the serpentine and amphibole groups. It occurs naturally in large deposits on every continent in the world. There are six types of naturally occurring asbestos fibres of which only three have been used commercially in Australia. These included the serpentine: Chrysotile (white asbestos); and the amphiboles: Crocidolite (blue asbestos) and Amosite (brown or grey asbestos). The other three non-commercially used amphiboles included Tremolite, Actinolite and Anthophyllite.. Asbestos has been used in the ancient world of the Egyptians, Greeks and Romans. It is believed that as early as 4000 BC, asbestos fibres were used for wicks in lamps and candles. Between 2000-3000 BC, embalmed bodies of Egyptian pharaohs were wrapped in asbestos cloth. The Greeks and Romans documented the harmful effects of asbestos fibres on those who mined the silken material from ancient stone quarries noting a sickness of the lungs ...
The U.S. Environmental Protection Agency has released early results on research being done in Libby, Montana to monitor the air quality and make progress towards cleaning up a town that has dealt with an increased risk of deadly asbestos exposure for decades now. The data, which was presented during a meeting at the Libby Memorial Center, was described as a preliminary draft estimate. The final draft of the information will be used to determine how dangerous the air is in Libby after decades of Amphibole asbestos mining and attempts to decrease the risk of asbestos exposure in the future. For more than a decade, EPA has worked in this community to clean up the pollution left behind by 40 plus years of mining operations. Under this administration, EPA has stepped up its commitment to provide the best science to finish the job of protecting the health and future of the people of Libby, said Jim Martin, the EPAs Regional Administrator in Denver. Once we finalize these toxicity estimates, they ...
Cincinnati, OH - Workers exposed to low levels of an asbestos-like mineral from Montana more than two decades ago are at an increased risk for lung disease today, according to research from the University of Cincinnati (UC).. Vermiculite is a mineral with a flaky, fluffy-looking structure. Previous studies revealed that the vermiculite ore mined in Libby, Mont., contained increased levels of an asbestos-like mineral fiber that can become airborne and inhaled when used in manufacturing.. In a 25-year follow-up study of workers at a plant which stopped using Libby vermiculite in 1980, current chest X-rays revealed that 20 percent of workers who experienced low cumulative exposure to these fibers had changes in the lining around their lungs. In the group with the highest exposure, changes on chest X-rays were noted in 54 percent of workers.. James Lockey, MD, senior research investigator, says the study indicates that this particular asbestos-like mineral contained in the Libby vermiculite ore can ...
Asbestos is a naturally occurring rock forming mineral silicate in fibrous form belonging to the serpentine and amphibole groups. It occurs naturally in large deposits on every continent in the world. There are six types of naturally occurring asbestos fibres of which only three have been used commercially in Australia. These included the serpentine: Chrysotile (white asbestos); and the amphiboles: Crocidolite (blue asbestos) and Amosite (brown or grey asbestos). The other three non-commercially used amphiboles included Tremolite, Actinolite and Anthophyllite.. Asbestos has been used in the ancient world of the Egyptians, Greeks and Romans. It is believed that as early as 4000 BC, asbestos fibres were used for wicks in lamps and candles. Between 2000-3000 BC, embalmed bodies of Egyptian pharaohs were wrapped in asbestos cloth. The Greeks and Romans documented the harmful effects of asbestos fibres on those who mined the silken material from ancient stone quarries noting a sickness of the lungs ...
Case opinion for US 3rd Circuit IN RE: ASBESTOS PRODUCTS LIABILITY LITIGATION (No. VI). Read the Courts full decision on FindLaw.
A study is to be performed into the effects that vermiculite mining has had on the health of residents and their offspring in the town of Libby in Montana. This is where the W R Grace vermiculite mine was located, and the town has a high rate of asbestos cancer.. An announcement was made by researches from the Mount Sinai School of Medicine who confirmed that they would be carrying out a study into the effects of vermiculite mining on the health of those that have been living in Libby. The study will be a three phase one.. ...
Amphibole (Angel Phantom) Quartz is a quartz that contains inclusions of minerals in varied amounts and proportions, including Riebeckite, Actinolite, Tremolite, Richterite and Lithium. These show as opaque inclusions in layers or cloudy deposits, in a range of colours including white, yellow-gold, red, orange and plum. Even though not all minerals might be visible within the specimen the energies of the crystals will resonate in much the same way, the influence of the minerals becoming an integral part of their makeup.As the name suggests, many find this crystal useful in accessing and working with the Angelic Realms, although its clarity and colouring may affect the effectiveness of this. I have found that the energies of this crystal to be quite complex, and thus perhaps I feel that it aids connection with Higher intelligences that have more complex information to convey, or with those Angelics who wish to work with us on complex issues that mean a bit of hard work on our part! Not then for fluffy
2017 Elsevier B.V.Primary ore-forming minerals retain geochemical signatures of magmatic crystallization information and can reveal the petrochemical conditions prevalent at the time of their formation. The Baogutu deposit is a typical reduced porphyry Cu deposit. Amphibole and biotite Fe3+/SFe ratios, minerals (feldspar, biotite, amphibole, zircon and apatite), in situ elemental and apatite Nd isotopic compositions were determined by Mössbauer spectroscopy, electron probe microanalysis, and laser ablation multiple-collection inductively coupled plasma mass spectrometry, respectively, to investigate the magma oxidation state, petrogenesis, source features, and to constrain the carbon species at magmatic stages for the intrusive phases. The results show that the primary plagioclase and amphibole in the mineralized diorite to granodiorite porphyry and post ore hornblende diorite porphyry are distinct (An26-55 versus An60-69; Mg-hornblende versus tschermakite). In particular, the amphibole shows ...
RATIONALE: Studying samples of body fluid and blood from patients who have been exposed to asbestos or vermiculite in the laboratory may help doctors learn more about changes that may occur in DNA and identify biomarkers related to cancer.. PURPOSE: This laboratory study is looking for biomarkers to detect mesothelioma early in patients exposed to asbestos or vermiculite. ...
Many people wonder if they are, or have been, subject to the risks of asbestos exposure. Health hazards from asbestos dust have been recognized in workers exposed in shipyards, power generating stations, oil refineries, steel mills, paper mills, foundries, asbestos mining and milling, manufacturing of asbestos textiles and other asbestos products, insulation work in the construction and building trades, auto mechanics, and a variety of other trades. Demolition workers, drywallers, plumbers, electricians, carpenters, sprinkler fitters, ironworkers, and firefighters also may be exposed to asbestos dust. People whose work brings them into contact with asbestos workers who renovate buildings with asbestos in them, for example may inhale fibers that are in the air: this is called occupational exposure. Workers families may inhale asbestos fibers released by clothes that have been in contact with ACM: this is called paraoccupational exposure. People who live or work near asbestos-related operations ...
In a controversial article, The Great Asbestos Hysteria (Mail, February 23), we said that according to the Health and Safety Executive, the risks from white asbestos products are insignificant, and arguably zero in the case of lung cancer. The HSE assessments related to specific levels of exposure to white asbestos fibres, not white asbestos products, and found a risk from higher levels. The article said that asbestos in UK schools is almost all white. According to the HSE, the more harmful brown asbestos was also frequently used in schools. The writer was in error in saying that the HSE had been forced to withdraw a series of commercials claiming that mesothelioma kills 4,500 a year. In fact, the advertisements were based on an estimate of 4,000 deaths from all asbestos-related disease.
There are six main types of asbestos, broken into two separate categories. These two categories are:. Serpentine: meaning snake like or curly in appearance. Amphibole: characterized by straighter fibers. The serpentine group has only one member - chrysotile, which accounts for over 90% of all asbestos in world production. This asbestos is white or green in color and is often used as insulation or for fireproofing products. With its widespread usage, chrysotile is responsible for most asbestos-related health problems.. The amphibole group contains the other five types of asbestos. Of these, amosite and crocidolite are the only two used for commercial purposes. These two are characterized by strong, stiff fibers and are consider highly dangerous when these airborne fibers are inhaled or ingested.. Amosite, brown-asbestos, had been banned in many countries for decades but it was still being commercially produced up until this last decade. At one time, it accounted for 5% of the asbestos used in ...
Our sweet daughter, Libby, passed away from sudden and aggressive bile duct and liver cancer. From the moment she came into our lives as a 2 month old puppy until her last day at 6 years old and 7 months, Libby knew only unconditional love; she joined her parents, Julia & Casey, everywhere throughout her happy life - even moving via cross-Atlantic oceanliner from New York to London, where she spent her last two years making friends (especially with the kind barista at our neighborhood cafe who always let Libby come in to get her special croissants!), playing in the lush green grass, snoozing on the couch with her parents, chasing her favorite brown ball, and getting all of the love, cuddles, and treats she rightly deserved. We miss her sweet snorts and huge happy smile everyday - Libby is forever loved. RIP Libby Lou, August 10, 2012 - March 22, 2019. ...
opens as PDF 1.4 MB). Favourite quote? Asbestos cement used in India is free from all health hazards. AK Saraf, Chairman of the Asbestos Cement Products Manufacturers Association, India. CSR recommendation: Companies must adopt global policies for avoiding the use of new asbestos products and carefully manage in-place asbestos products in existing infrastructure. Update: Please see a letter in response to this posting below the fold from Ban Asbestos Network of India (BANI) - the organisation that published the book. His letter is well worth reading and offers a powerful condemnation of the quote by AK Saraf above. This is with reference to a piece Killing the Future: Asbestos use in Asia on your website published on 8th August, 2007.. BANI objected to the statement of A K Saraf of Asbestos Cement Products Manufacturers Association quoted in the piece is highly misleading. In India the asbestos industry has mastered the art of misinformation campaign. The statement is an expression of the ...
In 2011, Libby, Montana residents were considering a $43 million asbestos settlement with W.R. Grace & Company, which operated vermiculite mines in town.
Occurrence in Wales: Blake (1888) provided the first description of glaucophane from the British Isles, reporting its occurrence in rocks of his ‘Monian System’ [now known as the Aethwy Terrane or Blueschist Belt (Gibbons & Horák, 1990)] from near Llanfairpwllgwyngyll, Anglesey. Blake’s identification was confirmed by Greenly (1919) who also noted zoning in the amphiboles with green ‘hornblende’ core passing outwards into blue rims. Holgate (1951) provided a chemical analysis on separated rims, but suggested that as the blue amphibole contained a higher Fe3+ to Aliv content, it was crossite and not glaucophane. Macpherson (1983) recalculated Holgate’s analysis and, applying the new IMA amphibole classification, deemed them to be magnesio-arfvedsonites. New microprobe data (Horák & Gibbons, 1986; Gibbons & Gyopari, 1986) showed that the rims fall within the glaucophane-ferroglaucophane series. The Anglesey blueschists occur as poorly-exposed scattered ...
Asbestos, yarn, rope, cloth, tape, lagging rope, graphite gland packaging, bake liner, pife impregnated, pure ptfe pkg., mill board sheet Asbestos, yarn, rope, cloth, tape, lagging rope, graphite gland packaging, bake liner, pife impregnated, pure ptfe pk. ...
C551 / C551M-07(2019) Standard Specification for Asbestos-Cement Fiberboard Insulating Panels insulating panels~ asbestos-cement panels~
By the fire regulation substation entrance and internal doors must be fire rated. Asbestos was widely used in the internal construction or backing of fire doors due to its excellent fire resistance properties. That includes switchroom fire doors (wooden clad) in the form of core insulation, transformer room entrance doors (steel clad) in the form of mastic insulation, interior entrance and connecting fire doors (wooden clad) in the form of core insulation. They are usually painted gray or some other suitable colour to blend with the surroundings. ...
Asbestos is not one but a group of minerals which all occur naturally as thin fibres. It is this small size however that means they can cause various problems as they can float in the air and be easily breathed in to cause problems in the lungs. The different minerals however of course are slightly different in their appearance and in their effect. Amphibole is made of straight fibres that are much like needles. Amphiboles however are a category themselves and include: actinolite, anthophylite, amosite, crocidolite and termolite. The most commonly found asbestos in commercial products that most people suffer from is chrysotile. Health Problems. Asbestos causes a number of health problems and this is as a result of its being breahted into the lungs. Of the health complications that asbestos can cause, the most common are: asbestosis, mesothelioma and lung cancer. Absestosis is caused by the physical presence of asbestos in the lungs which causes scarring and fibrosis. Mesothelioma meanwhile is a ...
Prior to the late 1970s, the health hazards of asbestos exposure were a closely guarded secret by the large corporate and business interests involved in the manufacture and sales of asbestos products. Evidence of the connection between asbestos exposure and respiratory disease existed as far back as 1897; by 1931, the use of asbestos was tightly regulated in the U.K.. No such regulations existed in the U.S., however. Although scientific studies (many commissioned by asbestos and insurance corporations themselves) clearly showed that asbestos was the cause of respiratory disease, the industry itself engaged in a conspiracy of silence. Even the U.S. government was complicit, although government agencies did in fact issue safety guidelines in 1943. These guidelines did not have the force of law, however, and were rarely enforced ...
Be safe when exposed to vermiculite. The source of over 70 percent of all vermiculite sold in the United States from 1919 to 1990 is from a mine near Libby, Montana. There is a large deposit of asbestos in the vermiculite there. The MAJORITY of vermiculite insulation used in the United States under the brand […]. ...
In the YouTube video above, Mrs. Edith Hernandez talks about her husband and his mesothelioma treatment. Like many other mesothelioma patients, he was exposed to asbestos products. He was in the army and handled asbestos products and equipment. The symptoms of his mesothelioma did not appear till many years after the conclusion of World War…
The cause of the disease is linked to the exposure to asbestos, and shipbuilding throughout the world featured hundreds of asbestos products used for insulation, including those vessels used in the British Armed Forces. The material was considered ideal for use aboard ships until the 1980s. Asbestos could be found in the engine and boiler rooms, as well as in the walls, floors and ceilings of rooms such as the sleeping quarters and the galley. Both shipbuilders and those who served on military vessels could have inhaled airborne asbestos fibres while working on the ships ...
Its a fair complaint, on its face. I get plenty of those press releases from environmental groups and read those same news stories, and the only consistent reporting Ive seen about Libby over the last few years has been from New West.net. But the question is whether thats because the media or activists or environmental groups care less about people than, say, polar bears, or wolves, or reforming an archaic mining law that stacks the deck in favor of the W.R. Graces of the world to exploit communities along with the natural resources theyre after. I think there are a number of factors at play here to account for the relative quiet about Libby, and few of them have to do with a lack of horror at what has happened to the people of Libby. And probably none of them made that jury in Missoula acquit Grace and the former executives of the company. The tunnel vision of interest groups is legendary. No matter the issue area, these groups find a niche, and stick in it, often working at odds with ...
Asbestos is well recognized as a health hazard and is highly regulated. An estimated 1.3 million employees in the construction and general industry face significant asbestos exposure on the job. Heaviest exposures occur in the construction industry, particularly during the removal of asbestos during renovation or demolition. Employees are also likely to be exposed during the manufacture of asbestos products (such as textiles, friction products, insulation, and other building materials) and during automotive brake and clutch repair work.. OSHA and the Environmental Protection Agency (EPA) asbestos rules are intertwined.. For further information concerning this topic, please refer to this OSHA website.. Training for this topic may be found at ESAMS or Navy Knowledge Online.. ...
Asbestos is well recognized as a health hazard and is highly regulated. An estimated 1.3 million employees in the construction and general industry face significant asbestos exposure on the job. Heaviest exposures occur in the construction industry, particularly during the removal of asbestos during renovation or demolition. Employees are also likely to be exposed during the manufacture of asbestos products (such as textiles, friction products, insulation, and other building materials) and during automotive brake and clutch repair work.. OSHA and the Environmental Protection Agency (EPA) asbestos rules are intertwined.. For further information concerning this topic, please refer to this OSHA website.. Training for this topic may be found at ESAMS or Navy Knowledge Online.. ...
The asbestos found in vermiculite materials from the former zonolite mine in Libby is fairly unique. Asbestos is known to cause health effects at low levels of exposure.
Libby has been accused of being an intelligence agent for Israels Mossad. That sounds about right. I believe the technical term is Sayanim, although Libby, due to his background and position, may be a step or two above a sleeper agent (see also here, and from a dodgy source with good info, here; btw, have you noticed that the traditional dodgy sources are finding more acceptance in the mainstream, due to the fact that they are the pioneers in certain areas of truth?). There has long been speculation that the Mossad has a hidden spy-chief in the upper reaches of the American government. Libby is the most spectacular example of the phenomenon of so-called dual loyalties (so-called as his only real loyalty is to Israel), and the commutation of his political sentence is part of the education process for the greater American public about this important problem ...
Objectives Cancer risk has been estimated for asbestos production workers or other heavily exposed asbestos workers in numerous studies. The bulk of the asbestos epidemic results come, however, from past intermittent exposures during asbestos product use. This study concentrated on estimating the risk of cancer in such a population.. Methods Altogether 23 285 men and 930 women invited to a nationwide screening campaign for benign asbestos-related diseases in 1990-1992 were followed for cancer through the Finnish Cancer Register up to 1998. Standardized incidence ratios (SIR) were calculated in comparison with the total Finnish population.. Results Altogether 1392 cases of cancer were found among the men. The risk was slightly, but significantly elevated for lung cancer [SIR 1.14, 95% confidence interval (95% CI) 1.01-1.26), mesothelioma (SIR 2.77, 95% CI 1.66-4.31), and prostate cancer (SIR 1.21, 95% CI 1.09-1.34). The risk of lung cancer was slightly higher among the invited nonparticipants ...
Asbestos Minerals for Sale, Amphibole and Serpentine, Chrysotile, Actinolite, Amosite, Grunerite, Tremolite, Riebeckite and more! Asbestos Art Paper and the Philadephia Academy of Science Asebstos Collection.
frontend_meta_description_object_show_Sculpted nephrite fibula decorated with a dragon and a quilong. China, modern Height : 3 cm (1.2 in.) - Length : 15,5 cm (6.1 in.)
West African jade semiprecious stone beads are a deep green color and nephrite jade in a variety of shapes and sizes and are for sale online in the natural gemstone section at the Harlequin Beads and Jewelry bead store. Choose from round, oval and more st West African Jade
This specification covers requirements relating to asbestos-cement nonpressure sewer pipes, joints, and fittings suitable for use with gravity flow, intended ...
You can dispose of asbestos by using a private licensed asbestos removal contractor or carrying out the work yourself.. In this case you will need to make an appointment to deliver the prepared waste to the Merseyside Recycling and Waste Authority (MRWA). This is a disposal service available to Merseyside residents with cement bonded asbestos products only.. ...
The new technology network would be called the East Texas Medical and Educational Fiber-Optic Network, tripling the existing 221 miles of fiber-optic cable in Camp, Delta, Fannin, Franklin, Hopkins, Hunt, Lamar, Rains, Red River, Smith, Titus, Van Zandt and Wood counties.. ...
It was also useful for roofing, fireproofing and soundproofing. Asbestos was used for boiler insulation and steam water pipes in the shipping industry. Until somebody manages to fabricate a remedy for asbestos-related diseases the best advice that can be provided is to make sure that you and others deflect any contact with the material. So its 2012 and we still find ourselves talking regularly about the dangers of asbestos to those in the building industry to the public in general. It doesnt necessarily matter if you are a patient in the chair in the doctors office when you hear the word; or, if you are talking with a friend who says did you hear so-and-so has cancer ...
There are two types of fibers: amphibole (thin and straight) and serpentine (curly). All forms of asbestos fibers are ... "Asbestos". CDC. October 9, 2013. Retrieved 13 November 2015.. *^ Smith, Dorsett D. (2015). The Health Effects of Asbestos: An ... "Asbestos Exposure". National Cancer Institute, USA. 2017-06-15.. *. "Environmental Health Guidance Note - Asbestos" (PDF). ... The first lawsuits against asbestos manufacturers occurred in 1929. Since then, many lawsuits have been filed against asbestos ...
However, asbestos are known carcinogens, and cause various other illnesses, such as asbestosis; amphibole asbestos ( ... Several amphibole mineral species can have an asbestiform crystal habit. These asbestos minerals form long, thin, flexible, and ... as it is less dangerous in terms of health than the amphibole asbestos. Inosilicates consist of tetrahedra repeatedly bonded in ... Finally, the amphiboles are usually hydrated, that is, they have a hydroxyl group ([OH]−), although it can be replaced by a ...
... has repeatedly refuted his claims about asbestos. Booker has repeatedly claimed that white asbestos is "chemically identical to ... The risk differential between chrysotile and the two amphibole fibres for lung cancer is thus between 1:10 and 1:50. ... Structurally, asbestos or Mg3(Si2O5)(OH)4 consists of linear fibres, while talc or Mg3Si4O10(OH)2 consists of planar sheets. ... Thus he argues that asbestos, passive smoking and BSE have not been shown to be dangerous. His views on these matters go ...
In Finland anthophyllite asbestos was mined in two mines, the larger one Paakkila in the Tuusniemi commune started in 1918 and ... Anthophyllite is an amphibole mineral: ☐Mg2Mg5Si8O22(OH)2 (☐ is for a vacancy, a point defect in the crystal structure), ... It was mined in Finland and also in Matsubase, Japan where a large-scale open-cast asbestos mine and mill was in operation ... Some forms of anthophyllite are lamellar or fibrous and are classed as asbestos. The name is derived from the Latin word ...
Because these conditions can be triggered by industrial asbestos, which was also used in taconite mining and processing, the ... The tailings contained 40% of the mineral series cummingtonite-grunerite, which, being in the amphibole group, form particles ... the US District Court judge ruled that the drinking water and Lake Superior must be protected from the asbestos-like particles ... pleural mesothelioma and other pleural conditions which occur following asbestos exposure. ...
There are some exceptions, for example NA 2212 is all asbestos with UN 2212 limited to Asbestos, amphibole amosite, tremolite, ...
In amphiboles, (of which asbestos is an example) two chains are linked together by sharing of a third corner on alternate ...
... asbestos fibres have been identified in the lung. Amphibole fibres have usually predominated, but in a few cases mainly or only ... Chrysotile or white asbestos is the most commonly encountered form of asbestos, accounting for approximately 95% of the ... These state that "Asbestos exposure is associated with parenchymal asbestosis, asbestos-related pleural abnormalities, ... In September 2012, governments in Quebec and Canada ended official support for Canada's last asbestos mine in Asbestos, Quebec ...
Other asbestiform minerals include riebeckite, an amphibole whose fibrous form is known as crocidolite or "blue asbestos", and ... Asbestos Chrysotile Committee on Asbestos: Selected Health Effects, 2006, Asbestos: Selected Cancers, National Academies Press ... The most common asbestiform mineral is chrysotile, commonly called "white asbestos", a magnesium phyllosilicate part of the ... brown asbestos, a cummingtonite-grunerite solid solution series. ...
Asbestos is the only naturally occurring long mineral fiber. Six minerals have been classified as "asbestos" including ... chrysotile of the serpentine class and those belonging to the amphibole class: amosite, crocidolite, tremolite, anthophyllite ... Mineral fibers can be particularly strong because they are formed with a low number of surface defects, asbestos is a common ...
Nomenclature of amphiboles: Additions and revisions to the International Mineralogical Association's amphibole nomenclature. ... Created by distinct events, exsolution during cooling suggests its structure can be in asbestos form. This is a hydrous mineral ... separating it from the calcic-sodic amphiboles. It is related to anthophyllite amphibole and gedrite through coupled ... Ferrogedrite is an amphibole mineral with the complex chemical formula of ☐Fe2+2(Fe2+3Al2)(Si6Al2)O22(OH)2. It is sodium and ...
Portions of El Dorado County are known to contain natural asbestos formations near the surface. The USGS studied amphiboles in ... The study found that many amphibole particles in the area meet the counting rule criteria used by the EPA for chemical and ... The executive summary pointed out that even particles that do not meet requirements for commercial-grade-asbestos may be a ... naturally occurring asbestos information El Dorado County Weather El Dorado County Visitors Authority Sierra Community Access ...
Amphibole group[edit]. Amphiboles including amosite (brown asbestos) and crocidolite (blue asbestos) were formerly used in many ... History of Asbestos, Asbestos.com, retrieved 2016-04-07. *^ a b "Asbestos in the home booklet. Wrekin housing trust" (PDF). ... brown asbestos, white asbestos, and green asbestos.[3]. Asbestos mining existed more than 4,000 years ago, but large-scale ... Other regulated asbestos minerals, such as tremolite asbestos, CAS No. 77536-68-6, Ca2Mg5Si8O22(OH)2; actinolite asbestos, CAS ...
Amedeo Avogadro Americium Amethyst amide amine amino acid Ammonia ammonium Ammonium nitrate Ammonium perchlorate Amphibole ... aromatic amine aromatic compound Arrhenius equation arsenic Arthur Harden Artturi Ilmari Virtanen Arfvedsonite Asbestos ...
... amphibole, asbestos and magnetite crystals Petrov nad Desnou - staurolite crystals Maršíkov - beryl, chrysoberyl, columbite, ...
... loose-fill amphibole asbestos (in most cases brown amosite, though instances of blue crocidolite have been recorded) as an ... for residents caught up in loose-fill asbestos scandal Mr Fluffy: Full list of asbestos-contaminated homes in Canberra released ... Jansen started using asbestos as an insulation as early as 1967, and began using it in loose form in 1968, prompting a ... Loose Fill Asbestos has also been found in locations far removed from Canberra, such as three confirmed locations in Lithgow, ...
Court for the District of Minnesota case that determined the Reserve Mining Company was responsible for amphibole asbestos ... Eventually Lord allowed the EPA to issue an asbestos warning to the public. The asbestos issue defined the trial when it ... Selikoff argued that the lake contained asbestos-like fibers. He also said he thought a thorough study should be done on the ... The public, already alarmed by reports of asbestos deaths around the country, was fixated on the trial. It was also covered in ...
Lead and other heavy metal exposure resulting from dust and other particulates Asbestos exposure such as amphibole asbestos ...
Asbestos (fibrous serpentine- or amphibole minerals) Auerlite (variety of thorite) Avalite (chromian variety of illite) ... series of amphiboles) Howlite Hsianghualite Hubeite Hübnerite Huemulite Humite Huntite Hureaulite Hutchinsonite Huttonite ... amphibole group) Fornacite Forsterite (olivine group) Fougèrite (layered double hydroxide) Fourmarierite Fraipontite ... green mineral either jadeite or nephrite amphibole) Jasper (variety of quartz) Jeffersonite (variety of augite) Jet (fossilised ...
2 Sodium amphibole group Glaucophane - Na2Mg3Al2Si8O22(OH)2 Riebeckite (asbestos) - Na2FeII3FeIII2Si8O22(OH)2 Arfvedsonite - ... Amphibole group Anthophyllite - (Mg,Fe)7Si8O22(OH)2 Cummingtonite series Cummingtonite - Fe2Mg5Si8O22(OH)2 Grunerite - ...
"Asbestos dangers remained hidden for decades". Salt Lake City Tribune. AP Feature on Libby, MT: "For asbestos-ravaged town, ... both fibrous amphiboles) - in fact, it was formed underground through essentially the same geologic processes as the ... "Libby Asbestos". United States Environmental Protection Agency. Verhovek, Sam Howe (2006-10-11). "Firm Must Pay Asbestos Costs ... Pure vermiculite does not contain asbestos and is non-toxic. Impure vermiculite may contain, apart from asbestos, also minor ...
... asbestos MeSH D01.578.725.050.050 --- asbestos, amphibole MeSH D01.578.725.050.050.050 --- asbestos, amosite MeSH D01.578. ... asbestos MeSH D01.837.725.700.760.070.050 --- asbestos, amphibole MeSH D01.837.725.700.760.070.050.060 --- asbestos, amosite ... asbestos, amosite MeSH D01.578.725.500.050 --- asbestos, serpentine MeSH D01.578.725.500.800 --- talc MeSH D01.578.750.300 --- ... asbestos, amosite MeSH D01.837.725.700.760.535.400 --- asbestos, serpentine MeSH D01.837.725.700.760.535.800 --- talc MeSH ...
California are known to contain natural amphibole asbestos formations at the surface. The USGS studied amphiboles in rock and ... Asbestos-related diseases have been diagnosed in asbestos workers' family members, and in residents who live close to asbestos ... Asbestos is widely used in roofing materials, mainly corrugated asbestos cement roof sheets and asbestos shingles sometimes ... According to OSHA, "there is no 'safe' level of asbestos exposure for any type of asbestos fiber. Asbestos exposures as short ...
Amphiboles including amosite (brown asbestos) and crocidolite (blue asbestos) were formerly used in many products until the ... Chrysotile asbestos Asbestos fibers Asbestos Asbestos Blue asbestos (crocidolite). The ruler is 1 cm. Blue asbestos, teased to ... They are commonly known by their colors, as blue asbestos, brown asbestos, white asbestos, and green asbestos. Asbestos mining ... Asbestine List of minerals Asbestos abatement Asbestos and the law Asbestos Disease Awareness Organization Asbestos-ceramic ...
... riebeckite is known as crocidolite or blue asbestos. These are generally called amphibole asbestos. Orthorhombic series ... Four of the amphibole minerals are among the minerals commonly called asbestos. These are: anthophyllite, riebeckite, ... Amphiboles are the primary constituent of amphibolites. Amphiboles are minerals of either igneous or metamorphic origin; in the ... Amphiboles are also specifically less dense than the corresponding pyroxenes. In optical characteristics, many amphiboles are ...
The mountains were named for the asbestos which was mined in the 20th century and is found as a variety of amphibole called ... which is the source of chrysotile asbestos. List of mountain ranges of South Africa Mining industry of South Africa Asbestos ... The Asbestos Mountains is a range of hills in the Northern Cape province of South Africa, stretching south-southwest from ... Substitutes for asbestos now include ceramic, carbon, metallic and Aramid fibers, such as Twaron or Kevlar. David Goldblatt ...
Amphibole fibers are not cleared as effectively as serpentines and therefore accumulate more readily in the distal lung ... Asbestos-related diseases are disorders of the lung and pleura caused by the inhalation of asbestos fibres. Asbestos-related ... Asbestos can cause lung cancer that is identical to lung cancer from other causes. Exposure to asbestos is associated with all ... Inhaled asbestos fibres enter the upper and lower respiratory tracts when asbestos is released into the air. Some of the ...
In 1984, the import of raw amphibole (blue and brown) asbestos into New Zealand was banned. In 2002, the import of chrysotile ( ... Asbestos Licensing and the Control of Asbestos at Work Regulations) aimed at minimising the use and disturbance of asbestos ... Guidelines for Safe Usage of Asbestos Cement Products like Asbestos Cement Sheets and Asbestos Cement Blocks. IS 11769 Part 2: ... Asbestos was banned in South Africa in 2008. Prior to this, the country was one of the global leaders in asbestos production, ...
... is an amphibole silicate mineral with the chemical formula Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2. The name actinolite ... Actinolite asbestos was once mined along Jones Creek at Gundagai, Australia. Some forms of actinolite are used as gemstones. ... Fibrous actinolite is one of the six recognised types of asbestos, the fibres being so small that they can enter the lungs and ... Like tremolite, asbestiform actinolite is regulated as asbestos. Actinolite is commonly found in metamorphic rocks, such as ...
Riebeckite (asbestos) - Na2FeII3FeIII2Si8O22(OH)2 ... amphibole group. Phyllosilicates. sheets. [Si2nO5n]2n−. micas ... Sodium amphibole group *Glaucophane - Na2Mg3Al2Si8O22(OH)2 ... Amphibole group *Anthophyllite - (Mg,Fe)7Si8O22(OH)2 ...
However, asbestos are known carcinogens, and cause various other illnesses, such as asbestosis; amphibole asbestos ( ... Several amphibole mineral species can have an asbestiform crystal habit. These asbestos minerals form long, thin, flexible, and ... as it is less dangerous in terms of health than the amphibole asbestos.[107] ... Finally, the amphiboles are usually hydrated, that is, they have a hydroxyl group ([OH]−), although it can be replaced by a ...
Asbestos is the only naturally occurring long mineral fiber. Six minerals have been classified as "asbestos" including ... chrysotile of the serpentine class and those belonging to the amphibole class: amosite, crocidolite, tremolite, anthophyllite ... Mineral fibers can be particularly strong because they are formed with a low number of surface defects, asbestos is a common ...
Blue asbestos was also used in early gas masks. In the mid-20th century, asbestos was confirmed to be harmful, leading to the ... Riebeckite is a sodium-rich member of the amphibole group of silicate minerals, chemical formula Na2(Fe2+3Fe3+2)Si8O22(OH)2. It ... In 1964 Dr Christopher Wagner discovered an association between blue asbestos and mesothelioma. Crocidolite asbestos was mined ... The fibrous forms of riebeckite are known as crocidolite and are one of the six recognised types of asbestos. Often referred to ...
... and plants containing them Arsenic and inorganic arsenic compounds1 Asbestos Azathioprine Benzene Benzidine, and dyes ... and in combination with cisplatin and bleomycin Fluoro-edenite fibrous amphibole Formaldehyde Gallium arsenide Helicobacter ...
Riebeckite (asbestos) - Na2FeII3FeIII2Si8O22(OH)2 ... Sodium amphibole group *Glaucophane - Na2Mg3Al2Si8O22(OH)2 ... Amphibole group *Anthophyllite - (Mg,Fe)7Si8O22(OH)2 ...
Amosite is a rare asbestiform variety of grunerite that was mined as asbestos only in the eastern part of the Transvaal ... Cummingtonite is a metamorphic amphibole with the chemical composition (Mg,Fe2+)2(Mg,Fe2+)5Si8O22(OH)2, magnesium iron silicate ... The origin of the name is Amosa, the acronym for the mining company "Asbestos Mines of South Africa". Cummingtonite is commonly ... Manganese also substitutes for (Fe,Mg) within cummingtonite amphibole, replacing B site atoms. These minerals are found in high ...
"Is talcum powder asbestos?". The Straight Dope. (February 16, 1990). "Talc Ingredients". U.S. Food and Drug Administration. ... amphibole, and olivine, in the presence of carbon dioxide and water. This is known as "talc carbonation" or "steatization" and ... A 2010 US FDA survey failed to find asbestos in a variety of talc-containing products. In 2006 the International Agency for ... which found that cosmetic grade talc containing no asbestos-like fibres was correlated with tumor formation in rats forced to ...
Some minor copper, silver, tungsten, asbestos, beryl (aquamarine), ruby including a diamond have also been reported within the ... layers of magnetite and metachert and varying amounts of amphibole. The average iron content in the Atlantic City area is about ...
One mineral in the serpentine group, chrysotile, is a type of asbestos. Peridotites can take on a massive form or may be in ... Some peridotites, rich in amphibole, have a concentric layered structure and form parts of plutons called Alaskan-type zoned ... Peridotite that has been hydrated at low temperatures forms serpentinite, which may include chrysotile asbestos (a form of ... amphibole, and spinel. Peridotite is the dominant rock of the Earth's mantle above a depth of about 400 km; below that depth, ...
One of the six recognized types of asbestos. Approximately 40,200 tons of tremolite asbestos is mined annually in India. It is ... Tremolite is a member of the amphibole group of silicate minerals with composition: ☐Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2. ... The fibrous form of tremolite is one of the six recognised types of asbestos. This material is toxic and inhaling the fibers ... "Asbestos: Foe or Friend?". Indmedica Cyber Lectures. Indmedica. Retrieved 2 January 2012. Mineral may unlock secrets of Venus's ...
Langer and Nolan suggested that we failed to present the amphibole hypothesis in a developmental perspective. Our objective was ... The scope of the amphibole hypothesis has been confusing to many, scientists and laypeople alike. We ... express several criticisms of our recent review of the amphibole hypothesis. ... Asbestos-dust; Asbestos-fibers; Asbestosis; Occupational-exposure; Occupational-hazards; Exposure-assessment; Workplace-studies ...
Heated Asbestos: Analytical Challenges Posed by Heating Crocidolite and Other Fibrous Amphiboles. Myron R.C. Getman and James S ... asbestos minerals for the classification of amphibole minerals found in raw materials as either asbestiform or as non-asbestos ... Six tremolitic amphiboles were chosen for this study: three are fibrous (five from natural sites (i.e., mining locales)) and ... An experienced analyst can also recognize changes in these properties when heat-altered asbestos is present in the sample as ...
The first two are blue fibrous minerals, with glaucophane occurring in blueschists and crocidolite (blue asbestos) in ironstone ... Amphibole groups. Numerous subspecies and varieties of amphibole are known, the more important of which are shown below. The ... Hornblende is the most common subgroup of minerals in amphibole. Metallic ions found in different types of amphiboles include ... The chief differences between amphiboles and pyroxenes are that amphiboles contain essential hydroxide ions, and the basic ...
8 words related to amphibole: mineral, amphibole group, amphibolite, nephrite, actinolite, anthophyllite, asbestos, hornblende ... Synonyms for amphibole in Free Thesaurus. Antonyms for amphibole. ... Words related to amphibole. a mineral or mineral variety belonging to the amphibole group. Related Words. *mineral ... Crocidolite and Libby amphibole asbestos induced dose-dependent increases in micronuclei in control cells, which were enhanced ...
... used 2/3 of all asbestos Car Manufacturing Textile Industry Aerospace Industry Marine and Rail Transport industries ... Asbestos Products The versatility of Asbestos enabled it to used across a variety of industries these includeAsbestos is ... Asbestos cement products such as roofs and cladding contain as much as 11% to 20% of chrysotile and 5% to 10% amphibole ... Asbestos at Home. Most homes built before the mid 1970s contain asbestos in some form, and in fact asbestos building products ...
Libby Amphibole asbestos is a complex mixture of amphibole fibers, both mineralogically and morphologically. The mixture ... IRIS Toxicological Review of Libby Amphibole Asbestos (External Review Draft) * IRIS Toxicological Review of Libby Amphibole ... The Libby Amphibole Asbestos assessment was initiated in 2007. It was nominated for assessment by the IRIS Program because it ... IRIS Toxicological Review of Libby Amphibole Asbestos (Final Report). Overview. EPA has finalized the, Toxicological Review of ...
Home , Resources , The Synergist , Industry News , EPA: Most Significant Sources of Libby Amphibole Asbestos Have Been Removed ... EPA: Most Significant Sources of Libby Amphibole Asbestos Have Been Removed Published December 10, 2014 ... its cleanups of Libby and Troy-two towns in Montana that had significant and uncontrolled sources of Libby amphibole asbestos ( ... EPAs outdoor air testing for LAA in Libby and Troy indicates that asbestos air concentrations are now equivalent to those ...
... ... Data on size and shape characteristics of airborne amphibole asbestos and amphibole cleavage fragments obtained from air- ...
... chrysotile or white asbestos). Most amphibole asbestos was mined as crocidolite (blue) and amosite (brown) from Precambrian ... Although asbestiform amphiboles only contributed less than 6% of industrial asbestos worldwide, they have proved more toxic as ... Amphibole asbestos in Africa and Australia: geology, health hazard and mining legacy. WES GIBBONS ... Amphibole asbestos in Africa and Australia: geology, health hazard and mining legacy. WES GIBBONS ...
Asbestos formed predominantly of amphibole-group minerals, anthophyllite, crocidolite, riebeckite, amosite, tremolite, ... Asbestos formed predominantly of amphibole-group minerals, anthophyllite, crocidolite, riebeckite, amosite, tremolite, ...
Amphibole group[edit]. Amphiboles including amosite (brown asbestos) and crocidolite (blue asbestos) were formerly used in many ... History of Asbestos, Asbestos.com, retrieved 2016-04-07. *^ a b "Asbestos in the home booklet. Wrekin housing trust" (PDF). ... brown asbestos, white asbestos, and green asbestos.[3]. Asbestos mining existed more than 4,000 years ago, but large-scale ... Other regulated asbestos minerals, such as tremolite asbestos, CAS No. 77536-68-6, Ca2Mg5Si8O22(OH)2; actinolite asbestos, CAS ...
Blake DJ, Bolin CM, Cox DP, Cardozo-Pelaez F, Pfau JC: Internalization of Libby amphibole asbestos and induction of oxidative ... In vitro determinants of asbestos fiber toxicity: effect on the relative toxicity of Libby amphibole in primary human airway ... Amphibole samples. Libby amphibole (LA) was collected from the Rainy Creek Complex near Libby, Montana in the year 2000 (LA2000 ... All mineral types were included in this analysis such that both amphibole and non-amphibole particles were counted. Complete ...
Results for asbestos equipment from ABC, ABCOV, Air-O-Cell and other leading brands. Compare and contact a supplier serving ... AMOSITE - Amphibole Asbestos. Straight, brittle Amosite fibers, light gray to pale brown (also known as "brown asbestos") are ... asbestos sample equipment , asbestos sampling equipment , asbestos fiber equipment , sample asbestos equipment , asbestos ... asbestos removal equipment , asbestos waste equipment , asbestos particulate equipment , asbestos hazard equipment ...
Precautions Against Libby Amphibole Asbestos Exposure Provided to a Forest Management Agency. Although no overexposures to ... Libby amphibole were found, HHE Program investigators recommended ways to minimize the potential for exposure. They recommended ...
Asbestos has long been praised for its fire and heat resistant fibers, and its subsequent usefulness in construction and other ... Crocidolite, or blue asbestos, is one of the more common types of amphibole asbestos present in buildings, along with amosite ... Comparison of Amphibole and Chrysotile Asbestos. Chrysotile asbestos is believed by some to be the most dangerous form of ... When is Asbestos a Hazard?. Asbestos is believed to only be a significant hazard when it has become airborne. If asbestos is ...
Amphibole Asbestos Still Prevalent. The vermiculite and amphibole mix for decades was shipped throughout America for processing ... Flores said Libby amphibole doesnt lead to the same kind of asbestosis as chrysotile - the more commonly used type of asbestos ... U.S. Asbestos Imports Surge in August, Report Finds Canada Announces Asbestos Ban with Exemptions Government Report: EPA Failed ... The disease stems from amphibole asbestos and its needle-shaped fibers. Almost all of it was mined in or near Libby, Montana, ...
Research Pinpoints Libby Amphibole Disease. * February 26, 2018. Snickers Ad Spoofs Asbestos in Sports Illustrated Swimsuit ... 2018 by Asbestos.com and The Mesothelioma Center. All rights reserved. 1 S. Orange Ave., Suite 301, Orlando, FL 32801 ... Asbestos.com is sponsored by law firms. This website and its content may be deemed attorney advertising. Prior results do not ... Patrick Ma, lead investigator at WVU Cancer Center, told Asbestos.com. "Yes, the expectations for this trial are high." ...
EPA finalises IRIS review on inhalation of Libby amphibole asbestos. Home » EPA finalises IRIS review on inhalation of Libby ... Comments Off on EPA finalises IRIS review on inhalation of Libby amphibole asbestos ... Toxicological review of Libby amphibole asbestos in support of summary information on the Integrated Risk Information System ( ... describing the scientific basis for the human health hazard and dose-response assessments of inhaled Libby amphibole asbestos ( ...
CH9661155Chemical studies of amphibole asbestos. I. Structural changes of heat-treated crocidolite, amosite, and tremolite from ...
Amphibole group. Five types of asbestos are found in the amphibole group: amosite, crocidolite, anthophyllite, tremolite, and ... Other regulated asbestos minerals, such as tremolite asbestos, CAS No. 77536-68-6, Ca2Mg5Si8O22(OH)2; actinolite asbestos (or ... 12001-28-4 is an amphibole from Africa and Australia. It is the fibrous form of the amphibole riebeckite. Blue asbestos is ... File:Blue asbestos.jpg Blue asbestos (crocidolite) from Wittenoom, Western Australia. The ruler is 1 cm. File:Blue asbestos ( ...
A monoclinic mineral, (Fe,Mg) (sub 7) Si (sub 8) O (sub 22) (OH) (sub 2) ; amphibole group; has Mg/(Mg + Fe (super 2+) ) = 0.30 ... are used as asbestos.. cumulate ...
Asbestos fibers are classified by mineral structure as serpentine or amphibole.. Table 1. Types of Asbestos. Serpentine. ... There are two classes of asbestos: serpentine and amphibole.. *Asbestos is now used much less widely in the United States and ... www.epa.gov/asbestos/asbestos-laws-and-regulations#phaseoutexternal icon.. Research showing a clear link between asbestos ... However, asbestos is still in use in some products today and asbestos remains in many older buildings [NIOSH 2011a]. ...
... that occurred among a panel of seven experts surrounding the science of how fiber length relates to toxicity of asbestos and ... Asbestos. D,0.1µm. Mesothelioma. Dodson et al, 1990. Autopsy of lung and pleural tissue from former shipyard workers. Amphibole ... Data from the asbestos literature. Clinical analysis of human pleural tissue. Asbestos. L,2µm;D,0.03µm. Pleural plaques. ... Tremolite asbestos is an amphibole that can cleave resulting in short squatty cleavage fragments depending on crystalline plain ...
Libby Amphibole Asbestos *Geology and Human Health * *Internet Resources. *Teaching Materials. *Visualizations ...
The use of asbestos and exposure to it has serious health consequences. Learn more about the history of asbestos and the ... Humans have used asbestos for at least 10,000 years for just about everything. Ranging from cooking pots to insulating ... Amphibole Asbestos. Microscopically, amphibole asbestos fibers appear as hard spiky crystals. There was a little twist and bend ... Home / Asbestos / History of Asbestos. History of Asbestos Use. Asbestos had a long history of production and devastation ...
Asbestos (mineral) Reports of the harmful effects of asbestos fibres on human health caused increasing concern beginning in the ... from the article Amphibole The common crystallographic habit of amphiboles is acicular or prismatic; however, most of the ... Asbestosis, also called white lung, lung disease that is caused by the prolonged inhalation of asbestos fibres. A type of ... Amosite, a variety of the silicate mineral cummingtonite, which is a source of asbestos (see cummingtonite). ...
... but there is no justification for assuming that their presence in an asbestos-exposed population is always related to asbestos ... Egilman D. Asbestos screenings. Amer J Indust Med 2002;42:163.. The following article shows that the film triad method (PA, ... Asbestos: Why we have to defend against screened cases. Mealeys Litigation Report, November 12, 2003;18:1-16. * Bernstein DB. ... Cases of alleged asbestos-related disease: a radiologic re-evaluation. J Occup Med 1990;32:1088-90. *Houser PG: Affadavit in ...
Consumer Product Safety Commission: Asbestos: Risk and Assessment. Environmental Protection Agency: Libby Amphibole Asbestos ... Today, products which contain more than one percent asbestos are considered asbestos-containing materials (ACMs) and are banned ... Vermiculite May Pose Asbestos Hazard. The mineral vermiculite is an extremely effective soil conditioner for moisture retention ... When asbestos exists within a solid construction compound, it poses no true hazard as the fibers cannot be released. It is only ...
Learn more about the serious health risks that drill press operators may have due to asbestos exposure while on the job. ... If youre a drill press operator who developed mesothelioma from asbestos exposure in your workplace, you might be eligible for ... Amphibole: This form of asbestos is far more deadly. A drill press operator exposed to any amount of amphibole asbestos for any ... [email protected]asbestos.net. © 2019 Mesothelioma Justice Network at Asbestos.net - The information provided by www.asbestos.net is not ...
EPA finalizes Libby Amphibole Asbestos health assessment (Mont.). 10/27/2014. Frontier Refining agrees to resolve alleged risk ...
EPA finalizes Libby Amphibole Asbestos health assessment (Mont.). 12/05/2014. Groundwater Cleanup to Begin at Smalley-Piper ...
Asbestos fibers are very durable and can tolerate ve... ... Asbestos are crystallized silicate minerals that form fibers ... Asbestos, Amosite. Asbestos, grunerite. A monoclinic amphibole form of asbestos having long fibers and a high iron content. It ... Asbestos, Amphibole. A class of asbestos that includes silicates of magnesium, iron, calcium, and sodium. The fibers are ... Asbestos is a carcinogen. Lung cancer is most common but asbestos is also a risk factor for cancers of other organs. ...
13 Asbestos Sampling Thermal System Insulation (TSI) * 14. 14 Asbestos Sampling • Miscellaneous Materials  At least one sample ... Amphibole (Amosite and Crocidolite)  Biopersistant  Straight spear like fibers ... 11 Asbestos Sampling OSHA 40 CFR 763.86 • Prescriptive sampling methods US EPA Pink Book • Summarizes the Asbestos Hazard ... 1 0 How Do You Identify Asbestos? • Laboratory analysis  Cannot identify an asbestos fiber by the naked eye • Licensed ...
Asbestos is a group of heat-resistant minerals. It is not fully banned in the U.S. and present in many products. Exposure can ... Asbestos is a group of heat-resistant minerals. It is not fully banned in the U.S. and present in many products. Exposure can ... All others are classified as amphibole asbestos.. All asbestos is fibrous. The main difference between serpentine and amphibole ... Is Asbestos Still Used in the United States Today?. Asbestos is not yet fully banned in the United States. Asbestos mining is ...
  • Residents of Libby, MT have experienced significant asbestos exposure due to an asbestos contaminated vermiculite mine near the community over several decades. (umt.edu)
  • However, the exact mechanism by which Libby amphibole asbestos generates autoimmune responses is unclear. (umt.edu)
  • To elucidate a possible mechanism for asbestos induced autoimmunity, the cellular effects of Libby amphibole asbestos were characterized in vitro using a phagocytic murine macrophage cell line, which are characteristic of alveolar macrophages. (umt.edu)
  • Our results indicate that Libby amphibole asbestos generates oxidative stress in murine macrophages similar to crocidolite asbestos. (umt.edu)
  • However, Libby asbestos induces distinct cellular effects compared to crocidolite asbestos. (umt.edu)
  • Libby amphibole asbestos also induces apoptosis in murine macrophages resulting in the translocation of SSA/Ro52 to cell surface blebs of apoptotic cells. (umt.edu)
  • Interestingly, autoantibodies found in the sera of the Libby cohort also recognize the SSA/Ro52 autoantigen, indicating that humans and mice exposed to amphibole asbestos generate similar AA profiles and that the alterations of the immune response by amphibole asbestos may be comparable. (umt.edu)
  • The Lincoln County Asbestos Resource Program is a program that was established in 2012 with the mission of reducing exposure to Libby amphibole asbestos that is found within the Libby Asbestos Superfund Site and the surrounding areas of Lincoln County. (lcarp.org)
  • However, the publications they cited generally involved issues of asbestos exposure in buildings and were not pertinent to occupational exposures to chrysotile, which was the subject of our paper. (cdc.gov)
  • As a result of the continuing exposure to meteorologic influences such as rain, sunshine, wind and frost, as well as to industrial atmospheric pollutants, the surface of asbestos cement products corrodes and weathers. (asbestosdiseases.org.au)
  • Environmental exposure to silicate compounds such as silica and asbestos has been associated with increased autoimmune responses and the development of autoimmune disease in humans. (umt.edu)
  • Therefore, the cellular effects of amphibole asbestos may be a combined consequence of its chemical composition as well as the activation of distinct cellular pathways during exposure. (umt.edu)
  • Lincoln County Asbestos Resource Program is dedicated to keeping families and workers safe from asbestos exposure. (lcarp.org)
  • Learn what asbestos is and the dangers of exposure. (lcarp.org)
  • Learn how to avoid asbestos exposure in your home and while on the job. (lcarp.org)
  • Asbestos cement products such as roofs and cladding contain as much as 11% to 20% of chrysotile and 5% to 10% amphibole asbestos (crocidolite or amosite). (asbestosdiseases.org.au)
  • Residential housing and schools were often clad with fibro cement sheeting (commonly known as fibro) and roofed with corrugated asbestos cement products. (asbestosdiseases.org.au)
  • Residents have developed numerous asbestos-related diseases as well as increased autoimmune responses. (umt.edu)
  • They also state that we failed to recognize dozens of references that support the role of superoxide radicals and the increased pathogenicity of amphiboles relative to chrysotile. (cdc.gov)
  • This restriction sharply limits the public health relevance of the hypothesis, since most studies have found that asbestos produces more lung cancers than mesotheliomas. (cdc.gov)
  • These apoptotic cell surface blebs are recognized by autoantibodies from mice exposed to amphibole asbestos, suggesting that these cell surface structures may be antigenic when presented in a pro-inflammatory context. (umt.edu)
  • Asbestos is the name given to a group of six different fibrous minerals (amosite, chrysotile, crocidolite, and the fibrous varieties of tremolite, actinolite, and anthophyllite) that occur naturally in the environment. (cdc.gov)
  • The name amphibole (Ancient Greek ἀμφίβολος - amphíbolos meaning 'ambiguous') was used by René Just Haüy to include tremolite, actinolite and hornblende. (wikipedia.org)
  • Minerals important in asbestos analysis include cummingtonite-grunerite, crocidolite, tremolite-actinolite and anthophyllite. (osha.gov)
  • Asbestos includes chrysotile, cummingtonite-grunerite asbestos (amosite), anthophyllite asbestos, tremolite asbestos, crocidolite, actinolite asbestos and any of these minerals which have been chemically treated or altered. (osha.gov)
  • Amphiboles however are a category themselves and include: actinolite, anthophylite, amosite, crocidolite and termolite. (healthguidance.org)
  • Actinolite - Actinolite is classified under amphibole asbestos. (mesotheliomacenter.org)
  • Its chemical composition makes it a common mineral found in rocks and soil, but actinolite asbestos has not been used as much in asbestos containing products. (mesotheliomacenter.org)
  • The remaining three types of asbestos in the amphibole group are: a nthophyllite, tremolite, and actinolite . (ehso.com)
  • The GSA presentation will focus on the discovery of types of asbestos that geologists call fibrous iron sodium amphiboles and fibrous actinolite in Clark County, Nevada, and the geological settings that caused the unusual asbestos formation, said Metcalf. (eurekalert.org)
  • Many regulations have been created to protect people from exposure to mined and refined asbestos, like fibrous actinolite, which the scientists discovered. (eurekalert.org)
  • The other types all belong to the amphibole group of minerals and include the fibrous forms of anthophyllite , amosite (grunerite), crocidolite (riebeckite), tremolite, and actinolite . (britannica.com)
  • Relatively small amounts of tremolite and actinolite have been mined and used as asbestos. (earthmagazine.org)
  • Some common varieties are tremolite , actinolite , asbestus , edenite , hornblende (the last name being also used as a general term for the whole species). (everything2.com)
  • Vermiculite insulation which may contain small amounts of amphibole asbestos, principally Termolite or Actinolite. (ffhi.ca)
  • Although asbestiform amphiboles only contributed less than 6% of industrial asbestos worldwide, they have proved more toxic as mineral pathogens than the more commonly mined asbestiform serpentine (chrysotile or white asbestos). (lyellcollection.org)
  • Six mineral types are defined by the United States Environmental Protection Agency (EPA) as "asbestos" including those belonging to the serpentine class and those belonging to the amphibole class. (wikipedia.org)
  • All six asbestos mineral types are known to be human carcinogens . (wikipedia.org)
  • Asbestos is a mineral which is made up of minute fibres measuring less than 3 microns long by 1 micron thick. (environmental-expert.com)
  • Asbestos is naturally occurring mineral fibres with specific physical and chemical qualities. (environmental-expert.com)
  • The second variety of this mineral, serpentine asbestos, is thicker, shorter, and curlier than the amphibole form and is formed in layers. (mesotheliomasymptoms.com)
  • If the asbestos is "non-friable," the mineral is not under regulation. (mesotheliomasymptoms.com)
  • The Greeks termed asbestos the "miracle mineral" because of its soft and pliant properties, as well as its ability to withstand heat. (wikidoc.org)
  • Asbestos is a mineral that naturally occurs in deposits all over the world. (asbestos.net)
  • chrysotile is the most important asbestos mineral. (britannica.com)
  • Amosite, a variety of the silicate mineral cummingtonite, which is a source of asbestos (see cummingtonite). (britannica.com)
  • Unfortunately, many vermiculite deposits are known to contain not only the targeted mineral, but also hazardous asbestos. (newsociety.com)
  • Biotite would often be found in close proximity to another mineral known as diopsid, which over millions of years and the same weathering conditions would eventually become asbestos, a known carcinogen. (newsociety.com)
  • Until the late 20th century, a great deal of these materials contained a dangerous mineral called asbestos . (asbestos.net)
  • Once removed, asbestos manufacturers processed the mineral to create asbestos-containing materials (ACMs). (mesothelioma.com)
  • Although the last asbestos mine closed in 2002, other countries continue to mine the mineral. (mesothelioma.com)
  • Each type belongs to the serpentine or amphibole asbestos mineral family. (mesothelioma.com)
  • However, the most common form of asbestos, chrysotile, may have some minor mineral loss in acidic environments. (cdc.gov)
  • Fifteen years after its much-celebrated ban of the toxic mineral, Australia has just reached its peak of asbestos-related diseases such as malignant mesothelioma cancer. (medworm.com)
  • a fibrous mineral, either amphibole or chrysotile, formerly used for making incombustible or fireproof articles. (dictionary.com)
  • The International Mineralogical Association currently classifies amphiboles as a mineral supergroup, within which are two groups and several subgroups. (wikipedia.org)
  • Working in an asbestos mine, processing plant or any of the following industrial job sites where asbestos might be present can expose people to this cancer-causing mineral. (pleuralmesothelioma.com)
  • Asbestos is the general name for a family of mineral products. (bloggernews.net)
  • Uses: Are limited to some asbestos uses and as mineral specimens. (galleries.com)
  • One of the 10 substances selected was asbestos, a naturally-occurring fibrous mineral. (exponent.com)
  • Asbestos is a type of metamorphic mineral group that falls into two classes, serpentine and amphibole. (rationalwiki.org)
  • A mineral product that is flexible, possesses high tensile strength, is heat resistant, resistant to chemical degradation, and can be woven into fabric is commercially designated as "asbestos. (mesotheliomacenter.org)
  • Asbestos is divided into two groups: serpentine and amphibole which is determined by the chemical compounds the mineral. (mesotheliomacenter.org)
  • Asbestos is a naturally occurring mineral. (ehso.com)
  • Chrysotile, the only mineral in the serpentine group, is the most commonly used type of asbestos and accounts for approximately 95% of the asbestos found in buildings in the United States. (ehso.com)
  • It is a fibrous blue mineral and belongs to the riebeckite family of amphibole silicates. (artfire.com)
  • Chrysotile , the fibrous form of the mineral serpentine , is the best-known type and accounts for about 95 percent of all asbestos in commercial use. (britannica.com)
  • A natural mineral fiber that is either mined or quarried, asbestos can be spun, woven, or felted, almost like cotton and wool. (britannica.com)
  • Robert Virta, mineral commodity specialist for the U.S. Geological Survey, prepared the following information on asbestos, a mineral commodity used for centuries but now in significant decline. (earthmagazine.org)
  • Chrysotile is a serpentine group mineral and the other five are amphibole group minerals. (earthmagazine.org)
  • For more information on asbestos and other mineral resources, visit minerals.usgs.gov/minerals . (earthmagazine.org)
  • Chrysotile, also known as "white asbestos" and a member of the Serpentine mineral group is the most common. (nemmar.com)
  • Well-characterized amphibole asbestos mineral samples are required for use as analytical standards and in future research projects. (rti.org)
  • Asbestos was called the "miracle mineral" due to its many unique physical properties. (apsu.edu)
  • http://mineral.galleries.com/minerals/silicate/anthophy/anthophy.htm - 'ANTHOPHYLLITE (Magnesium Iron Silicate Hydroxide)' http://www.mesopages.com/mesothelioma-legal-information/mesothelioma-and-asbestos.html - 'Mesothelioma And Asbestos. (google.com)
  • The original intent of the designation was to promote asbestos mining, and serpentine sometimes is a host rock for the fibrous mineral. (blogspot.com)
  • The assessment is focused on a specific type of asbestos found as a consequence of the mining and processing of vermiculite in Libby, Montana. (epa.gov)
  • EPA has also estimated the amount of LAA that a person can breathe every day for a lifetime that is likely to not result in adverse non-cancer health effects-the first such estimate regarding non-cancer effects for any type of asbestos. (aiha.org)
  • The name for this type of asbestos is chrysotile and the USGS explains about 96 percent of worldwide asbestos production and consumption between 1900 and 2003 is made up of this form. (mesotheliomasymptoms.com)
  • [2] This type of asbestos, like all asbestos, is hazardous. (wikidoc.org)
  • Health complications usually depend on the type of asbestos exposure, the American Cancer Society notes. (reference.com)
  • Educators are reacting cautiously to a new study that suggests that the health hazards posed by the type of asbestos most common in school buildings have been greatly overstated. (edweek.org)
  • Chrysotile is the only type of asbestos in the serpentine category, while the remaining five types belong in the amphibole category. (mesotheliomacenter.org)
  • Because if its use in many insulation products, the EPA classified amosite as the second most used type of asbestos in the United States. (mesotheliomacenter.org)
  • Since this type of asbestos was rarer, it wasn't used commercially. (mesotheliomacenter.org)
  • Tremolite is the type of asbestos that can be found in vermiculite, which is a type of magnesium aluminum silicate material that expands when heated and used in a construction and agriculture. (mesotheliomacenter.org)
  • As the only member of the serpentine group, Chrysotile (A, B) is the most common type of asbestos found in buildings. (nemmar.com)
  • As an acronym for the Asbestos Mines of South Africa, Amosite is the second most prevalent type of asbestos found in building materials. (nemmar.com)
  • Chrysotile is the most common type of asbestos in the United States and has been mined in various locations in the United States. (apsu.edu)
  • EPA has finalized the, Toxicological Review of Libby Amphibole Asbestos: in support of the Integrated Risk Information System (IRIS) . (epa.gov)
  • The final health assessment of the toxicity of Libby amphibole asbestos was prepared by staff in both EPA's Region 8 Office and Office of Research and Development's National Center for Environmental Assessments (NCEA). (epa.gov)
  • The Libby Amphibole Asbestos assessment was initiated in 2007. (epa.gov)
  • An assessment for Libby Amphibole Asbestos is not currently on IRIS. (epa.gov)
  • EPA hosted an interagency science consultation on the draft IRIS Toxicological Review of Libby Amphibole Asbestos. (epa.gov)
  • EPA released the draft IRIS Toxicological Review of Libby Amphibole Asbestos for public review and comment, and announced the public listening session. (epa.gov)
  • EPA posted the final Toxicological Review of Libby Amphibole Asbestos to the IRIS database. (epa.gov)
  • EPA has announced that its cleanups of Libby and Troy-two towns in Montana that had significant and uncontrolled sources of Libby amphibole asbestos (LAA) due to the mining and processing of contaminated vermiculite-have been effective in reducing cancer and non-cancer risks in both towns. (aiha.org)
  • The composition of Libby amphibole (LA) is complex and minimal toxicity data are available. (biomedcentral.com)
  • A finalised review has been issued by the EPA describing the scientific basis for the human health hazard and dose-response assessments of inhaled Libby amphibole asbestos (LAA) in connection with IRIS (the Integrated Risk Information System database, available via http://www.epa.gov/iris/index.html ). (bibra-information.co.uk)
  • A research team led by thoracic surgeon Dr. Raja Flores has identified Libby amphibole asbestos disease for the first time as the puzzling killer that continues to threaten innocent victims exposed to one variety of asbestos. (asbestos.com)
  • It's the first study to really describe the syndrome of Libby amphibole disease," Flores said. (asbestos.com)
  • Researchers found 87 percent of the miners exposed to Libby amphibole had pleural abnormalities and 68 percent had specific LPT. (asbestos.com)
  • Places endemic with Libby amphibole need to know what to look for. (asbestos.com)
  • We need to identify areas filled with Libby amphibole and try and prevent further contamination because this is a relentless, progressive killer. (asbestos.com)
  • Libby Amphibole Disease: Pulmonary Function and CT Abnormalities in Vermiculite Miners. (asbestos.com)
  • EPA finalizes Libby Amphibole Asbestos health assessment (Mont. (epa.gov)
  • To address exposures to the public, Libby amphibole (LA) was measured in personal breathing zone and Tyvek surface wipe samples collected during firewood harvesting simulations, as well as in the ash and emissions of woodstoves when amphibole-contaminated firewood was combusted. (cdc.gov)
  • Libby amphibole" associated with vermiculite ore near Libby, Montana, was also excluded. (exponent.com)
  • Reports of the harmful effects of asbestos fibres on human health caused increasing concern beginning in the 1970s, however. (britannica.com)
  • Amphibole is made of straight fibres that are much like needles. (healthguidance.org)
  • More alarming, the friends and family of these groups may also be at higher risk due to the tiny asbestos fibres getting caught in their clothes and hair and being brought home with them after work. (healthguidance.org)
  • The two major classes of asbestos fibres are called serpentine and amphibole (see diagram above). (ohsrep.org.au)
  • The three most commonly used types of asbestos fibres are chrysotile (95% of all usage), crocidolite and amosite. (ohsrep.org.au)
  • This means that in Australia industry is recycling and returning (selling) asbestos fibres back into the community as a small proportion (unintended but known) of fill such as in various grades of gravel. (ohsrep.org.au)
  • Shorter fibres are used in such products as paper, millboard, and asbestos-cement building materials. (britannica.com)
  • Asbestos' brittle, smooth-surfaced fibres are difficult to spin, tending to slip past each other unless blended with a rough-surfaced fibre, such as cotton , which typically makes up 10-25 percent of the blend. (britannica.com)
  • A regional variation in fibre concentration in different tissue samples was found, and the size distribution of naked fibres and asbestos bodies was determined. (bmj.com)
  • By energy dispersive x-ray microanalysis the fibres were identified mainly as amphibole asbestos. (bmj.com)
  • Employees in many different industries other than the asbestos mining industry were exposed to asbestos fibres. (hubpages.com)
  • Taking into consideration that in the United States alone 10,000 people die each year as a direct result of exposure to the deadly asbestos fibres it is unconceivable why a country would continue the use or mining of this product. (hubpages.com)
  • The best advice to anyone who has been, is, or may in the future be, exposed to asbestos fibres, particularly if the exposure is for a prolonged period of time, is to educate oneself with regards to the prevention of asbestos exposure. (hubpages.com)
  • The level of friability determines the amount of asbestos fibres that can be released into the atmosphere and cause health problems when people inhale these fibres. (hubpages.com)
  • However when inhaled, amphibole fibres stay much longer in the lungs than chrysotile fibres and they are more likely to inflict damage and cause disease, including cancer. (ffhi.ca)
  • If the asbestos fibres are enclosed or tightly bound in a compound, there is no significant health risk. (ffhi.ca)
  • Certain asbestos material suppliers were fully aware of the severe dangers of long-term, unprotected asbestos exposure to innocent workers like the average drill press operator. (asbestos.net)
  • Exponent has considerable experience in various aspects of asbestos-related research, including expertise in the disciplines needed to evaluate health risks associated with different types of asbestos exposures. (exponent.com)
  • There are six different types of asbestos that occur naturally throughout the world. (mesotheliomacenter.org)
  • however, some issues, including the relative hazards of different types of asbestos and whether there is a safe level of exposure to any of them, remain in scientific dispute. (bmj.com)
  • Another useful site that has posted articles on the different types of asbestos, and mesothelioma, is http://www.diagnosismesothelioma.info/articles-mesothelioma.html You may find those articles useful. (google.com)
  • Asbestos use continued to grow through most of the 20th century until public knowledge (acting through courts and legislatures) of the health hazards of asbestos dust outlawed asbestos in mainstream construction and fireproofing in most countries. (wikipedia.org)
  • When vermiculite is mined, often so too are trace amounts of asbestos dust. (newsociety.com)
  • Residual asbestos dust, as was found in the Libby vermiculite, is already friable as it is not in any stable compound. (newsociety.com)
  • Needle or filamentous shaped dust is released when working with asbestos. (bioportfolio.com)
  • 1.6 Warning- Breathing of asbestos dust is hazardous. (astm.org)
  • In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. (astm.org)
  • 1.3 Warning- Breathing of asbestos dust is hazardous. (astm.org)
  • These desirable properties made asbestos a very widely used material, and its use continued to grow throughout most of the 20th century until the carcinogenic effects of asbestos dust caused its effective demise as a mainstream construction and fireproofing material in most countries. (netlibrary.net)
  • The plaintiffs' expert, Dr. William Longo, presented results of a 'work simulation' study that involved grinding and abrading the gaskets with various methods to create dust, which he failed to analyze for asbestos content. (forbes.com)
  • 17 Home renovation is a popular activity in Australia, and asbestos-containing materials may be a source of exposure to householders if respirable asbestos dust is released. (mja.com.au)
  • Naturally occurring asbestos can also be harmful and difficult to control, especially when it becomes dust and can be transported on the wind. (eurekalert.org)
  • The first medical article on the hazards of asbestos dust appeared in the British Medical Journal in 1924. (bmj.com)
  • Following inquiries by Edward Merewether and Charles Price, the British government introduced regulations to control dangerous dust emissions in UK asbestos factories. (bmj.com)
  • 5 Such scientific disputes and policy uncertainties conform to a long standing pattern whereby medical knowledge about the health hazards of asbestos dust has emerged slowly and sometimes falteringly since the early 20th century. (bmj.com)
  • Asbestos: when the dust settles an imaging review of asbestos-related disease. (radiopaedia.org)
  • Pliny the Elder suggested the use of a respirator made of transparent bladder skin to protect workers from asbestos dust. (environmentalchemistry.com)
  • In 1897 a Viennese physician attributed emaciation and pulmonary problems to (asbestos) dust inhalation. (environmentalchemistry.com)
  • He pointed out that this fibrotic scarring of lungs resulting from prolonged exposure to asbestos dust could have a latency period of 15 years. (environmentalchemistry.com)
  • Amphiboles are more easily turned to dust with finger pressure (known as "friable) and therefore more hazardous than Chrysotile which is very flexible. (hubpages.com)
  • Most amphibole asbestos was mined as crocidolite (blue) and amosite (brown) from Precambrian banded ironstones in South Africa and, to a lesser extent, Western Australia. (lyellcollection.org)
  • South Africa now has the highest rate of asbestos-induced mesothelioma in the world, with this invariably fatal cancer responsible for over 9% of deaths in a study conducted in a former Cape crocidolite mining town. (lyellcollection.org)
  • Amosite , CAS No. 12172-73-5, is a trade name for the amphiboles belonging to the Cummingtonite - Grunerite solid solution series, commonly from Africa , named as an acronym from Asbestos Mines of South Africa. (wikidoc.org)
  • Asbestos deposits can be found throughout the world and are still mined in Australia, Canada, South Africa, and the former Soviet Union. (nemmar.com)
  • Despite this, widespread asbestos use continued until the late 1980s when the health risks were publicly identified, and the government enacted asbestos regulations. (asbestos.net)
  • Asbestos in talc products carry all risks of asbestos-related disease. (bioportfolio.com)
  • Individuals exposed to asbestos face health risks including cancer and other illnesses. (mesothelioma.com)
  • Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. (astm.org)
  • Because of the severe health risks posed by asbestos, it is critically important for informed consumers to be aware of the exposure risk in their environment. (bloggernews.net)
  • Health risks associated with amphibole exposure are much greater than those with chrysotile. (mja.com.au)
  • The research team, which was led by a medical-school professor from the University of Vermont and included researchers from four other institutions, also said that the risk of an asbestos-related death due to a school exposure is 'magnitudes lower' than the risks posed by whooping-cough vaccines, participation in high-school football, and smoking. (edweek.org)
  • [11] Nonetheless, the asbestos industry attempted to cover up the risks of asbestos into the 1970s [12] (sounds familiar, doesn't it? (rationalwiki.org)
  • They understand the serious health risks that are involved in asbestos being in your home and in the removal of asbestos. (diamondcertified.org)
  • Once these health risks were firmly documented in the 1970s, regulatory agencies in the United States and other developed nations began placing tight restrictions on workers' exposure to asbestos in industrial plants. (britannica.com)
  • The Federal Agency for Toxic Substances and Disease Registry (ATSDR) today released the final version of its health consultation for El Dorado Hills, CA. The health consultation says that people should use caution in areas of naturally occurring asbestos to reduce potential health risks from exposure. (cdc.gov)
  • People can minimize potential health risks from naturally occurring asbestos in the El Dorado Hills area by taking precautions, according to a health consultation by the Agency for Toxic Substances and Disease Registry (ATSDR). (cdc.gov)
  • As the health risks associated with asbestos have become evident, more than 50 countries have banned asbestos, although India and the United States have not. (medicalxpress.com)
  • Asbestos causes a number of health problems and this is as a result of its being breahted into the lungs. (healthguidance.org)
  • Absestosis is caused by the physical presence of asbestos in the lungs which causes scarring and fibrosis. (healthguidance.org)
  • Mesothelioma meanwhile is a type of cancer that attacks the tiny membranes surrounding the lungs and abdomen, while more general cancer is also common and one of the largest causes of death among asbestos sufferers. (healthguidance.org)
  • In the mid 1970s, other materials containing asbestos were banned. (mesotheliomasymptoms.com)
  • In the 1970s, following enactment of various laws that established Federal agencies such as the Environmental Protection Agency (EPA) and Occupational Safety and Health Administration (OSHA) with missions to protect the environment, the general public, workers, and consumers, some uses of asbestos began to be banned or otherwise regulated. (cdc.gov)
  • Asbestos mining in the United States reached its height in the late 1960s and early 1970s. (mesothelioma.com)
  • Asbestos mining reached a peak in the late 1960s and early 1970s. (mesothelioma.com)
  • Reports of long-term harmful effects of asbestos exposure began appearing in the 1970s, although dangers associated with asbestos were suspected decades earlier. (howstuffworks.com)
  • Asbestos use has been banned in many industrialised countries since the 1970s, but asbestos-containing materials are still found in many buildings in Australia, including domestic residences. (mja.com.au)
  • Much of the use of asbestos in the United States was diminished in the 1970s and 1980s with the development of suitable alternatives for certain applications, and asbestos has not been mined or otherwise produced in the U.S. since 2002. (exponent.com)
  • Minnesota's first asbestos deposits were found in the Iron Hills area, which is where many iron mines were operating again in the 1970s. (mesotheliomatreatmentcenters.org)
  • By the 1970s Quebec in Canada and the Urals region of the Soviet Union were the major sources of asbestos fibre, and the United States led the world in the manufacture of asbestos products. (britannica.com)
  • One of the main problems with asbestos came from sprayed or "friable" (easily broken up) amphibole asbestos used in buildings until the 1970s. (ffhi.ca)
  • Asbestos in commercial indian talc. (bioportfolio.com)
  • Easily available commercial Indian talc products widely used in Southeast Asia were examined for the presence of asbestos. (bioportfolio.com)
  • Asbestos deposits can be found around natural talc and vermiculite deposits. (mesothelioma.com)
  • Johnson & Johnson suffered its first loss in an asbestos-related talcum powder lawsuit Thursday after a New Jersey jury ordered the company and its talc supplier to pay $37 million in damages. (medworm.com)
  • Amphibole asbestos is associated with talc deposits in Hudspeth County. (tshaonline.org)
  • Topics include characterization of amphiboles including those associated with vermiculite, talc and various ores and quarried rock. (prweb.com)
  • Longo also testified he hadn't tested for asbestos in cosmetic talc before 2017 when he had actually tested some earlier this century and found it didn't contain asbestos, J&J claims. (legalnewsline.com)
  • His methodology for the testing of talc for asbestos is accepted and undisputed by the defendants, whose own experts use and endorse the method. (legalnewsline.com)
  • It is probable that the issue may depend critically on asbestos fibre type, an aspect not so far addressed. (bmj.com)
  • Differences in the carcinogenic potency of different asbestos fibre types are debated in the scientific community. (bmj.com)
  • An asbestos fibre about the diameter of a human hair is actually a bundle of nearly 2 million fibrils that can fit on a pin head. (ohsrep.org.au)
  • Once airborne, there are no means of making an asbestos fibre safe. (ohsrep.org.au)
  • Though valued since ancient times for its resistance to fire, asbestos fibre did not achieve commercial importance until the 19th century. (britannica.com)
  • After mining or quarrying, the asbestos fibre is freed by crushing the rock and is then separated from the surrounding material, usually by a blowing process. (britannica.com)
  • Asbestos fibre is heat- and chemical-resistant, a flame-retardant, has exceptional insulation properties, absorbs sound, is flexible and has a very high tensile strength. (hubpages.com)
  • The airborne asbestos fibre concentrations were determined in all areas. (who.int)
  • Thus, asbestos cement sheeting, commonly known as "fibro", was intensively produced and used during this period. (mja.com.au)
  • The most commonly found asbestos in commercial products that most people suffer from is chrysotile. (healthguidance.org)
  • EPA has also developed a list of commonly used Asbestos acronyms . (ehso.com)
  • Chrysotile has been the most commonly used form of asbestos, followed by crocidolite, amosite and anthophyllite. (earthmagazine.org)
  • Due to their mineralogical properties of having high strength, being an excellent insulator for heat and electricity, being able to resist heat without damage, being fairly good at resisting corrosion, and also having the ability to be woven into fabric, asbestos has been added to many different materials commonly used in buildings and different products. (apsu.edu)
  • Until the mid-1980's asbestos was commonly used in drywall and or drywall compounds. (ffhi.ca)
  • It is the fibrous form of the amphibole riebeckite. (wikidoc.org)
  • Crocidolite, CAS No. 12001-28-4, is the fibrous form of the amphibole riebeckite, found primarily in southern Africa, but also in Australia and Bolivia. (wikipedia.org)
  • Glaucophane, crocidolite, riebeckite and arfvedsonite form a somewhat special group of alkali-amphiboles. (wikipedia.org)
  • In at least one mine, children were used to trample shipping bags filled with amosite, and in doing so received what is thought to have been the highest ever inhalation dose of amphibole asbestos. (lyellcollection.org)
  • 5. The method of claim 1 , wherein the composition is administered to an individual who has inhaled silica or asbestos particles due to an occupational exposure. (google.com)
  • In this study, we investigate self-reported non-occupational asbestos exposure during home renovation in New South Wales. (mja.com.au)
  • 1 , 2 Although estimates suggest that more than 125 million people are exposed to asbestos in occupational settings, 3 the number of people non-occupationally exposed is not known. (mja.com.au)
  • The purpose of GAAW is to educate people on the dangers of asbestos - something so many people incorrectly perceive to be an occupational hazard that was put to bed with the global trend towards the banning of asbestos in recent years. (hubpages.com)
  • An evaluation of potential occupational exposure to asbestiform amphiboles near a former vermiculite mine. (cdc.gov)
  • The National Institute for Occupational Safety and Health (NIOSH) has a goal under the Asbestos Roadmap of locating and characterizing research materials for future use. (rti.org)
  • Major producers such as Russia, Kazakhstan, China, and Brazil continue to produce and export asbestos to countries around the world, especially to low- and middle-income countries that too often have weak or nonexistent occupational and environmental regulations. (medicalxpress.com)
  • Asbestos is currently regulated by the Occupational Safety and Health Administration (OSHA), the EPA, and other government agencies. (apsu.edu)
  • Health Canada has encouraged provincial occupational health authorities to adopt stringent workplace exposure limits for asbestos. (ffhi.ca)
  • Deposits of asbestos are found throughout the world. (wikidoc.org)
  • According to the study, similar amphibole deposits have been found in surface sites in Arizona and Nevada. (asbestos.com)
  • Asbestos is found in naturally occurring deposits around the world. (mesothelioma.com)
  • Asbestos deposits are located across the United States, mainly in the western U.S. and eastern coastal states. (mesothelioma.com)
  • In fact, New Mexico is home to six natural asbestos deposits due to its unique geology. (mesothelioma.com)
  • Asbestos is widely distributed, but the largest deposits are found in Canada and Russia. (bmj.com)
  • Modern asbestos production began in 1868 with the workings of a mine in Italy , and in 1878 large-scale production from deposits in Quebec began. (britannica.com)
  • By the 1980s and 1990s, asbestos trade and use were heavily restricted, phased out, or banned outright in an increasing number of countries. (wikipedia.org)
  • Since the mid 1980s, many uses of asbestos are banned in many countries. (wikidoc.org)
  • From the 1920s to the late 1980s, every one of these facilities used asbestos-containing materials for production. (asbestos.net)
  • By the 1980s and 1990s asbestos trade and use started to become banned outright, phased out, or heavily restricted in an increasing number of countries. (netlibrary.net)
  • Particularly for those who worked with asbestos (this was often the case before the dangers were fully understood and it was very popular between the 1940s and 1980s due to its heat resistance, conductance and chemical resistance) this can be a serious issue to look out for, and the symptoms of asbestos poisoning may take between 15 and 40 years before they make themselves known. (healthguidance.org)
  • In the mid 1980s the US EPA estimated that 20% of all public buildings in the US contained some type of ACBMs (Asbestos Containing Building Materials) that was friable. (ohsrep.org.au)
  • Asbestos cement materials were made in Australia from 1917 to the mid-1980s so even the very youngest asbestos cement roof has been subjected to over twenty years of weathering, heat, cold, rain, hail and winds. (ohsrep.org.au)
  • Since the 1980s various substitutes for asbestos have been developed for use in many products. (britannica.com)
  • In Québec, asbestos-containing materials were used abundantly in buildings constructed prior to the 1980s ( 5 ). (inspq.qc.ca)
  • In the 1980s, earth scientists helped medical scientists to recognize that there was more than one type of material called asbestos, and that the different asbestos materials are not equally carcinogenic. (geotimes.org)
  • In contrast, some have argued that pure chrysotile "may present little or no carcinogenic hazard" if uncontaminated by amphiboles. (bmj.com)
  • Induction of DNA double-strand breaks by asbestos , silica and titanium dioxide: do they provide an early predictive marker of carcinogenic potential? (cdc.gov)
  • Because of these properties, asbestos has been mined for use in a wide range of manufactured products, mostly in building materials, friction products, and heat-resistant fabrics. (cdc.gov)
  • It's found in almost all asbestos-based products available today, including brake linings, building materials, water and sewer pipes and insulation. (cancer.ca)
  • In addition, many people have been exposed to asbestos in building materials as buildings age, deteriorate, or burn down, releasing the asbestos in their insulation or other materials. (bloggernews.net)
  • Romans also used asbestos in their building materials. (environmentalchemistry.com)
  • Asbestos was used in the manufacture of more than 3000 products including textiles, building materials, insulation and brake linings. (environmentalchemistry.com)
  • Asbestos was added to many building materials because of its ability to retard fire, strengthen products, and acoustically insulate. (apsu.edu)
  • Asbestos use in building materials peaked in the years following World War II through the 1970's. (apsu.edu)
  • However, we cannot guarantee that new building materials on campus are "asbestos-free. (apsu.edu)
  • Many buildings on campus are known to have asbestos-containing building materials in good physical condition. (apsu.edu)
  • A few years ago, a survey was conducted on nearly every building on campus to determine what building materials in those buildings contain asbestos. (apsu.edu)
  • Amphiboles are composed of double-chain silicate (SiO 4 ) tetrahedra, which are linked at their vertices. (newworldencyclopedia.org)
  • The chief differences between amphiboles and pyroxenes are that amphiboles contain essential hydroxide ions, and the basic structure of an amphibole is a double chain of silicate tetrahedra, as opposed to the single chain structure of pyroxene. (newworldencyclopedia.org)
  • Ca(2)(Mg,Fe)(5)Si(8)O(22)(OH)(2) Anthophyllite asbestos. (osha.gov)
  • Two questions for the enterprising researcher: Was anthophyllite asbestos ever used as a paint additive in the United States? (google.com)
  • Is or was anthophyllite asbestos used in brakepads in the United States? (google.com)
  • Glidden Ultra Hide Stain Jammer, Oil Based Interior Primer/Sealer http://householdproducts.nlm.nih.gov/cgi-bin/household/brands?tbl=chem&id=2239 - From DeLima Associates/National Institutes of Health For the second question: Anthophyllite asbestos was/is mainly used in Finland. (google.com)
  • About the only practical use of anthophyllite asbestos was its uses in such items as refractory cements and paints. (google.com)
  • Asbestos mining existed more than 4,000 years ago, but large-scale mining began at the end of the 19th century, when manufacturers and builders began using asbestos for its desirable physical properties. (wikipedia.org)
  • Asbestos became increasingly popular among manufacturers and builders in the late 19th century due to its resistance to heat, electricity and chemical damage, sound absorption and tensile strength. (wikidoc.org)
  • Asbestos was used for thousands of years for various things, such as construction and pottery, although large-scale mining didn't begin until the 19th century. (rationalwiki.org)
  • Near the end of the 19th century, the use asbestos became even more widespread as a result of the industrial revolution. (environmentalchemistry.com)
  • Continuing long-term use of asbestos after harmful health effects were known or suspected, and the slow emergence of symptoms decades after exposure ceased, made asbestos litigation the longest, most expensive mass tort in U.S. history and a much lesser legal issue in most other countries involved. (wikipedia.org)
  • This was due to growing scientific evidence concerning the association of asbestos with serious health effects. (cdc.gov)
  • The recent study was done by doctors and scientists from the Mount Sinai Health System and Northwell Health in New York, the University of Montana, Montana State University and the Center for Asbestos Related Disease (CARD) in Libby. (asbestos.com)
  • Environmental Health Education for Asbestos-Contaminated Communities in Italy: The Casale Monferrato Case Study. (bioportfolio.com)
  • This Public Health Statement is the summary chapter from the Toxicological Profile for Asbestos . (cdc.gov)
  • This public health statement tells you about asbestos and the effects of exposure. (cdc.gov)
  • We present a review of the findings of this emerging environmental health concern impacting not only the residents of Libby but applicable to other populations living near asbestos-contaminated areas. (cdc.gov)
  • [3] [4] Health issues related to asbestos exposure can be found in records dating back to Roman times . (netlibrary.net)
  • Asbestos will continue to have a serious impact on public health for many decades to come, however, as the quantity of existing asbestos products in homes, schools, offices, and other structures is vast. (bloggernews.net)
  • 11 , 12 MM secondary to exposure to asbestos-containing materials is an emerging public health problem. (mja.com.au)
  • Referring to another substance whose health effects allegedly have been exaggerated, although on the positive side, Bill Rukeyser, a spokesman for California's Superintendent of Public Instruction Bill Honig, joked last week: 'Asbestos may turn out to be the oat bran of the public-buildings world. (edweek.org)
  • and despite thousands of years of people's personal observations , asbestos was not known to be dangerous until scientific studies were done on its health effects in the 20th century. (rationalwiki.org)
  • There is still the rare crank who denies the health hazards of asbestos, such as journalist Christopher Booker . (rationalwiki.org)
  • New York City estimated that 68% of all its buildings contained asbestos and that 81% of that asbestos was in such poor condition that it was a public health risk. (ohsrep.org.au)
  • On this page, you will find general information about asbestos and its health effects. (ehso.com)
  • Although many people live in homes where there is asbestos, they don't necessarily develop health problems. (diamondcertified.org)
  • If you are living around asbestos and not developing any health issues, then you may wonder why you should have the asbestos removed. (diamondcertified.org)
  • Just having asbestos in your home doesn't necessarily mean that you are going to develop a health issue. (diamondcertified.org)
  • Should Canadian health care professionals support the call for a worldwide ban on asbestos? (ebscohost.com)
  • The story of asbestos is an all to familiar one, "A miraculous, do anything chemical substance is identified as a serious health hazard" - except for one thing. (environmentalchemistry.com)
  • Its use predates history, and the recognition of health hazards associated with asbestos is recorded in writings from the first century. (environmentalchemistry.com)
  • Both Pliny the Elder and the first century geographer Strabo noted that workers exposed to asbestos had many health problems. (environmentalchemistry.com)
  • Even though asbestos markets have declined dramatically over the past 30 years because of health and liability issues, it is still used throughout the world. (earthmagazine.org)
  • Other ATSDR recommendations include continued state monitoring of health outcome data for asbestos-related disease and full enforcement of state and county air toxics regulations. (cdc.gov)
  • Residents will be able to ask federal scientists questions about their report examining health effects from naturally occurring asbestos later this month in El Dorado Hills. (cdc.gov)
  • HIB - Health Concerns - Asbestos and Your Health - What Is Asbestos? (nemmar.com)
  • These and other potentially deleterious health effects of asbestos have been recognized and studied for decades. (geotimes.org)
  • An article in the current issue of the Annals of Global Health describes the current state of asbestos use worldwide, a story that began over 100 years ago, and the real and contrived controversies regarding asbestos. (medicalxpress.com)
  • Similarly, the asbestos industry adopted the view that a public relations campaign was needed to quash the rising concerns about its health hazards. (medicalxpress.com)
  • How much asbestos is in a product does not indicate its health risk. (ffhi.ca)
  • Asbestos-containing transite water pipes - is there a health hazard from drinking water that is delivered through cement asbestos water pipes? (inspectapedia.com)
  • This article explains the potential health hazards (asbestos exposure by ingestion) as well as practical problems (fragility, collapse, expense of replacement) of cement asbestos transite pipe water piping and we provide citations to authoritative studies of this question. (inspectapedia.com)
  • For example, in 1973 the EPA banned the use of spray-on building insulation and fireproofing containing more than 1 percent asbestos under authority of the Clean Air Act [EPA 2013] https://www.epa.gov/asbestos/asbestos-laws-and-regulations#phaseout external icon . (cdc.gov)
  • If you would like to learn more about the laws and regulations that govern asbestos, EPA maintains a listing of the laws and regulations applicable to asbestos. (ehso.com)
  • The studies carried out in Québec in asbestos products factories and in the construction industry show that the current laws and regulations are not always enforced, thereby leading to the finding that asbestos is not used safely in these industries. (inspq.qc.ca)
  • Furthermore, when employers and workers know that asbestos is present, it is difficult to enforce existing regulations because the protective measures are constraining. (inspq.qc.ca)
  • http://www.ehso.com/asbestos.htm - 'Asbestos Information, Regulations. (google.com)
  • There are two classes of asbestos: serpentine and amphibole. (cdc.gov)
  • If asbestos is present, it should be monitored to ensure that the area is still safe and that the particles have not been disturbed. (mesotheliomasymptoms.com)
  • Drill press operation released vast quantities of raw asbestos particles into the air and left behind mounds of asbestos-laden metal filings and shavings. (asbestos.net)
  • The presence of asbestos can only be determined by specific sampling and analytical procedures conducted by qualified individuals. (apsu.edu)
  • If affected areas are not tested for the presence of asbestos all workers, contractors, trades persons, occupants and owners me be subject to Workplace Safety and Insurance Board (WSIB) Fines and Stop Work Order Penalties. (ffhi.ca)
  • The most common use was corrugated asbestos cement roofing primarily for outbuildings, warehouses and garages. (wikipedia.org)
  • An asbestos contaminated town in the vicinity of an asbestos-cement facility: The case study of Sibaté, Colombia. (bioportfolio.com)
  • The asbestos industry began operations in Colombia in 1942, with an asbestos-cement facility located in the municipality of Sibaté. (bioportfolio.com)
  • During the twentieth century sufficient asbestos cement pipe was used in the US to circle the earth eight times and still run to the moon and back. (ohsrep.org.au)
  • Its most common use worldwide is in asbestos-cement pipe and sheet. (earthmagazine.org)
  • They note that India produces little asbestos, but has become a major importer with exponential growth in manufacture of asbestos cement and pipes. (medicalxpress.com)
  • Transite pipe is an asbestos-cement product which was used for both HVAC ducts and for chimney or flue material to vent gas-fired appliances as well as for water piping in some communities. (inspectapedia.com)
  • Safety hazards associated with transite pipe cement asbestos materials in buildings. (inspectapedia.com)
  • Transite pipe or asbestos-cement pipes were used for water supply systems in some municipalities up into the 1970's in the U.S. and probably in other countries. (inspectapedia.com)
  • Cancer mortality for the population census tracts of Escambia County, FL, which use asbestos-cement (AC) pipe for public potable water distribution, was compared with cancer mortality data collected from census tracts in the same county where other types of piping materials are used. (inspectapedia.com)
  • The mining there, from 1919 to 1990, led to the longest-running man-made environmental disaster in American history and an asbestos cleanup project by the Environmental Protection Agency (EPA) just now coming to a close. (asbestos.com)
  • Most asbestos products were banned in the late 1970's by the Consumer Product Safety Commission and the Environmental Protection Agency. (newsociety.com)
  • Last week, the U.S. Environmental Protection Agency was busy defending the Asbestos Hazard Emergency Response Act of 1986, and rebutting the report's conclusion that inadequate scientific research and misguided attempts to regulate the problem have led to an 'asbestos panic. (edweek.org)
  • In this study, we conduct a comparative particle toxicity analysis of LA compared with standard reference asbestiform amphibole samples. (biomedcentral.com)
  • Scientists are still researching the amount of asbestos that is in the soil in the construction area, its toxicity to humans, and how far it can be transported by wind. (eurekalert.org)
  • Comparative proteomics, genomics and pulmonary toxicity of instilled single walled carbon nanotubes, crocidolite asbestos and ultrafine carbon black in mice. (cdc.gov)
  • This vermiculite ore was contaminated with fibrous and asbestiform amphibole in veins throughout the deposit. (cdc.gov)
  • [13] Chrysotile is more flexible than amphibole types of asbestos, and can be spun and woven into fabric. (wikipedia.org)
  • Asbestos was spun and woven into cloth in the same manner as cotton. (wikidoc.org)
  • Chrysotile is more flexible that other types of asbestos and can be woven into fabrics. (mesotheliomacenter.org)
  • Asbestos also exhibits high electrical resistance, and many forms can easily be woven into textiles. (earthmagazine.org)