Asbestos: 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.Asbestos, Serpentine: 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)Asbestos, Crocidolite: A lavender, acid-resistant asbestos.Asbestos, Amphibole: 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, Amosite: 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)Secologanin Tryptamine Alkaloids: Compounds formed by condensation of secologanin with tryptamine resulting in a tetrahydro-beta-carboline which is processed further to a number of bioactive compounds. These are especially found in plants of the APOCYNACEAE; LOGANIACEAE; and RUBIACEAE families.Dipsacaceae: A plant family of the order Dipsacales, subclass Asteridae, class Magnoliopsida. It is sometimes called the teasel family.Mesothelioma: 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)Mineral Fibers: 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)Pleural DiseasesSoil: The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants.Pleural Neoplasms: 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.Catharanthus: A plant genus of the family Apocynaceae. It is the source of VINCA ALKALOIDS, used in leukemia chemotherapy.Pleura: 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.Occupational Exposure: The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.Electrophoresis, Microchip: A highly miniaturized version of ELECTROPHORESIS performed in a microfluidic device.Magnesium Silicates: A generic term for a variety of compounds that contain silicon, oxygen, and magnesium, and may contain hydrogen. Examples include TALC and some kinds of ASBESTOS.Hajdu-Cheney Syndrome: Rare, autosomal dominant syndrome characterized by ACRO-OSTEOLYSIS, generalized OSTEOPOROSIS, and skull deformations.Construction Materials: Supplies used in building.Hyperpigmentation: Excessive pigmentation of the skin, usually as a result of increased epidermal or dermal melanin pigmentation, hypermelanosis. Hyperpigmentation can be localized or generalized. The condition may arise from exposure to light, chemicals or other substances, or from a primary metabolic imbalance.Occupational Diseases: Diseases caused by factors involved in one's employment.Brassicaceae: A plant family of the order Capparales, subclass Dilleniidae, class Magnoliopsida. They are mostly herbaceous plants with peppery-flavored leaves, due to gluconapin (GLUCOSINOLATES) and its hydrolysis product butenylisotrhiocyanate. The family includes many plants of economic importance that have been extensively altered and domesticated by humans. Flowers have 4 petals. Podlike fruits contain a number of seeds. Cress is a general term used for many in the Brassicacea family. Rockcress is usually ARABIS; Bittercress is usually CARDAMINE; Yellowcress is usually RORIPPA; Pennycress is usually THLASPI; Watercress refers to NASTURTIUM; or RORIPPA or TROPAEOLUM; Gardencress refers to LEPIDIUM; Indiancress refers to TROPAEOLUM.Pregnadienediols: Doubly unsaturated pregnane derivatives with two hydroxy groups substituted anywhere on the rings or side chains.MiningIntracranial Thrombosis: Formation or presence of a blood clot (THROMBUS) in a blood vessel within the SKULL. Intracranial thrombosis can lead to thrombotic occlusions and BRAIN INFARCTION. The majority of the thrombotic occlusions are associated with ATHEROSCLEROSIS.Receptors, Cyclic AMP: Cell surface proteins that bind cyclic AMP with high affinity and trigger intracellular changes which influence the behavior of cells. The best characterized cyclic AMP receptors are those of the slime mold Dictyostelium discoideum. The transcription regulator CYCLIC AMP RECEPTOR PROTEIN of prokaryotes is not included nor are the eukaryotic cytoplasmic cyclic AMP receptor proteins which are the regulatory subunits of CYCLIC AMP-DEPENDENT PROTEIN KINASES.Picea: A plant genus in the family PINACEAE, order Pinales, class Pinopsida, division Coniferophyta. They are evergreen, pyramidal trees with whorled branches and thin, scaly bark. Each of the linear, spirally arranged leaves is jointed near the stem on a separate woody base.Intracranial Aneurysm: Abnormal outpouching in the wall of intracranial blood vessels. Most common are the saccular (berry) aneurysms located at branch points in CIRCLE OF WILLIS at the base of the brain. Vessel rupture results in SUBARACHNOID HEMORRHAGE or INTRACRANIAL HEMORRHAGES. Giant aneurysms (>2.5 cm in diameter) may compress adjacent structures, including the OCULOMOTOR NERVE. (From Adams et al., Principles of Neurology, 6th ed, p841)Frizzled Receptors: A family of seven-pass transmembrane cell-surface proteins that combines with LOW DENSITY LIPROTEIN RECEPTOR-RELATED PROTEIN-5 or LOW DENSITY LIPROTEIN RECEPTOR-RELATED PROTEIN-5 to form receptors for WNT PROTEINS. Frizzled receptors often couple with HETEROTRIMERIC G PROTEINS and regulate the WNT SIGNALING PATHWAY.Amplified Fragment Length Polymorphism Analysis: The detection of RESTRICTION FRAGMENT LENGTH POLYMORPHISMS by selective PCR amplification of restriction fragments derived from genomic DNA followed by electrophoretic analysis of the amplified restriction fragments.OregonNickel: A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.Dust: Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed)Talc: 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)Lung Neoplasms: Tumors or cancer of the LUNG.Environmental Exposure: The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals.Carcinogens, Environmental: Carcinogenic substances that are found in the environment.Ships: Large vessels propelled by power or sail used for transportation on rivers, seas, oceans, or other navigable waters. Boats are smaller vessels propelled by oars, paddles, sail, or power; they may or may not have a deck.Air Pollutants, Occupational: Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.Lung: Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.Biomass: Total mass of all the organisms of a given type and/or in a given area. (From Concise Dictionary of Biology, 1990) It includes the yield of vegetative mass produced from any given crop.Soil Microbiology: The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms.Manufactured Materials: Substances and materials manufactured for use in various technologies and industries and for domestic use.Industry: Any enterprise centered on the processing, assembly, production, or marketing of a line of products, services, commodities, or merchandise, in a particular field often named after its principal product. Examples include the automobile, fishing, music, publishing, insurance, and textile industries.Embolization, Therapeutic: A method of hemostasis utilizing various agents such as Gelfoam, silastic, metal, glass, or plastic pellets, autologous clot, fat, and muscle as emboli. It has been used in the treatment of spinal cord and INTRACRANIAL ARTERIOVENOUS MALFORMATIONS, renal arteriovenous fistulas, gastrointestinal bleeding, epistaxis, hypersplenism, certain highly vascular tumors, traumatic rupture of blood vessels, and control of operative hemorrhage.Zeolites: Zeolites. A group of crystalline, hydrated alkali-aluminum silicates. They occur naturally in sedimentary and volcanic rocks, altered basalts, ores, and clay deposits. Some 40 known zeolite minerals and a great number of synthetic zeolites are available commercially. (From Merck Index, 11th ed)Neoplasms, Mesothelial: Neoplasms composed of tissue of the mesothelium, the layer of flat cells, derived from the mesoderm, which lines the body cavity of the embryo. In the adult it forms the simple squamous epithelium which covers all true serous membranes (peritoneum, pericardium, pleura). The concept does not refer to neoplasms located in these organs. (From Dorland, 27th ed)Dictyostelium: A genus of protozoa, formerly also considered a fungus. Its natural habitat is decaying forest leaves, where it feeds on bacteria. D. discoideum is the best-known species and is widely used in biomedical research.Pulmonary Fibrosis: A process in which normal lung tissues are progressively replaced by FIBROBLASTS and COLLAGEN causing an irreversible loss of the ability to transfer oxygen into the bloodstream via PULMONARY ALVEOLI. Patients show progressive DYSPNEA finally resulting in death.Silicic Acid: A hydrated form of silicon dioxide. It is commonly used in the manufacture of TOOTHPASTES and as a stationary phase for CHROMATOGRAPHY.MontanaCarcinogens: 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.Silicon Dioxide: 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.Quartz: Quartz (SiO2). A glassy or crystalline form of silicon dioxide. Many colored varieties are semiprecious stones. (From Grant & Hackh's Chemical Dictionary, 5th ed)Polyploidy: The chromosomal constitution of a cell containing multiples of the normal number of CHROMOSOMES; includes triploidy (symbol: 3N), tetraploidy (symbol: 4N), etc.Plastids: Self-replicating cytoplasmic organelles of plant and algal cells that contain pigments and may synthesize and accumulate various substances. PLASTID GENOMES are used in phylogenetic studies.Receptors, G-Protein-Coupled: The largest family of cell surface receptors involved in SIGNAL TRANSDUCTION. They share a common structure and signal through HETEROTRIMERIC G-PROTEINS.CaliforniaGenome, Plant: The genetic complement of a plant (PLANTS) as represented in its DNA.Cerebral Angiography: Radiography of the vascular system of the brain after injection of a contrast medium.Biodiversity: The variety of all native living organisms and their various forms and interrelationships.Pneumoconiosis: A diffuse parenchymal lung disease caused by inhalation of dust and by tissue reaction to their presence. These inorganic, organic, particulate, or vaporized matters usually are inhaled by workers in their occupational environment, leading to the various forms (ASBESTOSIS; BYSSINOSIS; and others). Similar air pollution can also have deleterious effects on the general population.Tomography, X-Ray Computed: Tomography using x-ray transmission and a computer algorithm to reconstruct the image.Inhalation Exposure: The exposure to potentially harmful chemical, physical, or biological agents by inhaling them.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Respiratory Tract NeoplasmsSignal Transduction: The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.Smoking: Inhaling and exhaling the smoke of burning TOBACCO.Adaptation, Physiological: The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.Cocarcinogenesis: The combination of two or more different factors in the production of cancer.Ecosystem: A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)Microscopy, Phase-Contrast: A form of interference microscopy in which variations of the refracting index in the object are converted into variations of intensity in the image. This is achieved by the action of a phase plate.Mutation: Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.Lung Diseases: Pathological processes involving any part of the LUNG.

Biological effects of naturally occurring and man-made fibres: in vitro cytotoxicity and mutagenesis in mammalian cells. (1/222)

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)

Magnetometric evaluation for the effect of chrysotile on alveolar macrophages. (2/222)

Alveolar macrophages are thought to play an important role in fibrogenesis due to asbestos exposure. In this experiment, we evaluated the effect mainly by unique magnetometry and also by conventional methods such as lactate dehydrogenase (LDH) activity measurement and morphological observations. Alveolar macrophages obtained from Syrian golden hamsters by bronchoalveolar lavages were exposed 18 hours in vitro to Fe3O4 as an indicator for magnetometry and chrysotile for experiments. A rapid decrease of the remanent magnetic field, so called "relaxation", was observed after the cessation of an external magnetic field in macrophages phagocytizing Fe3O4 alone, while relaxation was delayed in those concurrently exposed to chrysotile. Since relaxation is thought due to the cytoskeleton-driven random rotation of phagosomes containing iron oxide particles, chrysotile is considered to interfere with the cytoskeletal function of macrophages. Release of LDH from chrysotile-exposed macrophages into the medium was recognized, but it was not significantly higher than the controls. Apoptosis was negligible in macrophages exposed to chrysotile by the DNA ladder detection, the terminal deoxynucleotidyltransferase-mediated dUTP-biotin nick end labeling method and morphological observations. Electron microscopical examinations revealed early necrotic changes in macrophages exposed to chrysotile. These findings indicate that cell magnetometry detects impaired cytoskeletal function due to in vitro exposure to chrysotile.  (+info)

Comparative hazards of chrysotile asbestos and its substitutes: A European perspective. (3/222)

Although the use of amphibole asbestos (crocidolite and amosite) has been banned in most European countries because of its known effects on the lung and pleura, chrysotile asbestos remains in use in a number of widely used products, notably asbestos cement and friction linings in vehicle brakes and clutches. A ban on chrysotile throughout the European Union for these remaining applications is currently under consideration, but this requires confidence in the safety of substitute materials. The main substitutes for the residual uses of chrysotile are p-aramid, polyvinyl alcohol (PVA), and cellulose fibers, and it is these materials that are evaluated here. Because it critically affects both exposure concentrations and deposition in the lung, diameter is a key determinant of the intrinsic hazard of a fiber; the propensity of a material to release fibers into the air is also important. It is generally accepted that to be pathogenic to the lung or pleura, fibers must be long, thin, and durable; fiber chemistry may also be significant. These basic principles are used in a pragmatic way to form a judgement on the relative safety of the substitute materials, taking into account what is known about their hazardous properties and also the potential for uncontrolled exposures during a lifetime of use (including disposal). We conclude that chrysotile asbestos is intrinsically more hazardous than p-aramid, PVA, or cellulose fibers and that its continued use in asbestos-cement products and friction materials is not justifiable in the face of available technically adequate substitutes.  (+info)

Chrysotile, tremolite and fibrogenicity. (4/222)

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)

Asbestos-exposed blood monocytes--deoxyribonucleic acid strand lesions in co-cultured bronchial epithelial cells. (5/222)

OBJECTIVES: In lungs of asbestos-exposed persons alveolar and interstitial macrophages are able to release genotoxic substances such as reactive oxygen intermediates. It is unknown whether reactive oxygen intermediates released by macrophages are able to induce DNA (deoxyribonucleic acid) strand lesions in neighboring bronchial epithelial cells. METHODS: A co-culture (transwell) system was established which allows exposure of human blood monocytes cultured on a polycarbonate membrane within a distance of 1 mm of a monolayer of the bronchial epithelial cell line BEAS-2B. RESULTS: Exposure of blood monocytes to chrysotile B (100 microg/10(6)cells) caused an up to 2.8-fold increase in DNA strand lesions in co-cultured BEAS-2B cells measured by alkaline elution when compared with the levels of control cells after 1, 3, 24, and 48 hours. The main DNA damage thus occurred as early as within 1 hour of incubation, corresponding to the time course of the release of reactive oxygen intermediates by blood monocytes determined by chemiluminescence. The maximum release of reactive oxygen intermediates (3.2-fold increase over control values) was measured after 30 minutes of exposure of blood monocytes to chrysotile B. The addition of catalase (200 U/ml) or desferoxamine (100 microM) to the culture medium blocked almost completely the induction of DNA strand lesions in this system (maximum 85%). CONCLUSIONS: Exposure of blood monocytes to chrysotile B results in an increase in the release of reactive oxygen intermediates and induces DNA strand lesions in neighboring bronchial epithelial cells.  (+info)

Increased phosphorylated extracellular signal-regulated kinase immunoreactivity associated with proliferative and morphologic lung alterations after chrysotile asbestos inhalation in mice. (6/222)

Activation of extracellular signal-regulated kinases (ERK) has been associated with the advent of asbestos-associated apoptosis and proliferation in mesothelial and alveolar epithelial cells and may be linked to the development of pulmonary fibrosis. The objective of studies here was to characterize the development of inflammation, cellular proliferation, and fibrosis in asbestos-exposed C57Bl/6 mice in relationship to patterns of ERK phosphorylation. Inflammation occurred after 10 and 20 days of asbestos exposure as evidenced by increases in total protein and neutrophils in bronchoalveolar lavage fluid. Increases in cell proliferation were observed at 30 days in bronchiolar epithelia and at 4, 14, and 30 days in the alveolar compartment of the lung. Trichrome-positive focal lesions of pulmonary fibrosis developed at 30 days in the absence of elevations in lung hydroxyproline or procollagen mRNA levels. Striking increases in ERK phosphorylation were observed within pulmonary epithelial cells at sites of developing fibrotic lesions after 14 and 30 days of inhalation. In addition to characterizing a murine inhalation model of asbestosis, we provide the first evidence showing activation of ERK signaling within lung epithelium in vivo, following inhalation of asbestos fibers.  (+info)

Vitronectin adsorption to chrysotile asbestos increases fiber phagocytosis and toxicity for mesothelial cells. (7/222)

Biological modification of asbestos fibers can alter their interaction with target cells. We have shown that vitronectin (VN), a major adhesive protein in serum, adsorbs to crocidolite asbestos and increases fiber phagocytosis by mesothelial cells via integrins. Because chrysotile asbestos differs significantly from crocidolite in charge and shape, we asked whether VN would also adsorb to chrysotile asbestos and increase its toxicity for mesothelial cells. We found that VN, either from purified solutions or from serum, adsorbed to chrysotile but at a lower amount per surface area than to crocidolite. Nevertheless, VN coating increased the phagocytosis of chrysotile as well as of crocidolite asbestos. VN coating of both chrysotile and crocidolite, but not of glass beads, increased intracellular oxidation and apoptosis of mesothelial cells. The additional apoptosis could be blocked by integrin-ligand blockade with arginine-glycine-aspartic acid peptides, confirming a role for integrins in the fiber-induced toxicity. We conclude that VN increases the phagocytosis of chrysotile as well as of crocidolite asbestos and that phagocytosis is important in fiber-induced toxicity for mesothelial cells.  (+info)

Differentially expressed genes in asbestos-induced tumorigenic human bronchial epithelial cells: implication for mechanism. (8/222)

Although exposure to asbestos fibers is associated with the development of lung cancer, the underlying mechanism(s) remains unclear. Using human papillomavirus-immortalized human bronchial epithelial (BEP2D) cells, we previously showed that UICC chrysotiles can malignantly transform these cells in a stepwise fashion before they become tumorigenic in nude mice. In the present study we used cDNA expression arrays to screen differentially expressed genes among the tumorigenic cells. A total of 15 genes were identified, 11 of which were further confirmed by northern blot. Expression levels of these genes were then determined among transformed BEP2D cells at different stages of the neoplastic process, including non-tumorigenic cells that were resistant to serum-induced terminal differentiation, early and late passage transformed BEP2D cells, five representative tumor cell lines and fused tumorigenic-control cell lines which were no longer tumorigenic. A consistent 2- to 3-fold down-regulation of the DCC (deleted in colon cancer), Ku70 and heat shock protein 27 genes were detected in all the independently generated tumor cell lines while expression levels in early transformants as well as in the fusion cell lines remained normal. In contrast, all the tumor cell lines examined demonstrated 2- to 4-fold overexpression of the insulin receptor and its signal transduction genes. Differential expression of these genes was completely restored in the fusion cell lines examined. No alteration in c-jun or EGF receptor expression was found in any of the cell lines. Our data suggest that activation of the insulin receptor pathway and inactivation of DCC and Ku70 may cooperate in malignant transformation of BEP2D cells induced by asbestos.  (+info)

Chrysotile asbestos accounts for about 90% of all serpentine asbestos found around the world. The most commonly used form of asbestos, the mining and export of chrysotile has prompted a continuous battle between health professionals and countries that mine chrysotile, such as Canada, Russia, and Italy. While these mining countries consider the mineral to be safe and eagerly export it to others, many organizations maintain that it presents a formidable health hazard.. About 90% of the world production of chrysotile is used in the manufacture of chrysotile-cement, in the form of pipes, sheets and shingles. According to the Canadians, some 60 industrialized and developing nations use these asbestos-containing products due in part to their cost-effectiveness and durability.. Other products that include chrysotile asbestos include those classified as "friction" products, such as brake shoes, disk pads, and clutches for automobiles as well as elevators brakes. Chrysotile may also be found in some ...
Chrysotile, or "white", asbestos is the dominant form of asbestos in international commerce today. It accounts for 99% of current world asbestos production of 2 million tonnes. Chrysotile is an extremely hazardous material. Clinical and epidemiologic studies have established incontrovertibly that chrysotile causes cancer of the lung, malignant mesothelioma of the pleura and peritoneum, cancer of the larynx and certain gastrointestinal cancers. Chrysotile also causes asbestosis, a progressive fibrous disease of the lungs. Risk of these diseases increases with cumulative lifetime exposure to chrysotile and rises also with increasing time interval (latency) since first exposure. Comparative analyses have established that chrysotile is 2 to 4 times less potent than crocidolite asbestos in its ability to cause malignant mesothelioma, but of equal potency of causation of lung cancer. The International Agency for Research on Cancer of the World Health Organization has declared chrysotile asbestos a ...
EXEDY Friction Material, which is located in Thailand, was awarded a trophy by King Mongkuts Institute of Technology Thonburi on February 4th, 2015, which was given by President Dr. Sakarindr Bhumiratana at the universitys campus.. EXEDY Friction Material received this award due to their contributions to the universitys research and development, as well as for their support of students of the institution who had participated in a student formula competition.. ...
We analyzed chrysotile and chrysotile-associated amphibole (largely tremolite) asbestos fibers in 21 workers exposed to various types of processed (milled) chrysotile ore, 20 long-term chrysotile miners, and 20 members of the general population (controls). Significantly greater amounts of both chrysotile and tremolite were found in processed-ore workers and miners than in controls. On average, the mean fiber lengths and aspect ratios for the mining and processed-ore-exposed workers were similar and were significantly greater than the values seen in the controls; within the processed-ore group, there was a marked variation in these parameters, and some workers appeared to be exposed to fairly long, thin fibers. It was found empirically that the fiber size data, and to a lesser extent the concentration data, could be used to classify workers accurately into those with processed-ore exposure and controls. We conclude that fiber sizes in the lungs of processed-ore-exposed workers are similar to those of
I am shocked at this attempt to de-throne serpentine as CAs state rock. My colleagues and I have dedicated our lives to study these rocks and the rich biological diversity found in habitats overlying these rocks. Most SERPENTINITE contains little to no asbestiform chrysotile and does not pose any significant health risk in its natural state. The fact that chrysotile presents adverse health effects as a reason for removing SERPENTINITE as state rock is as flawed as saying that the Ridge-nosed rattlesnake should be removed as the state reptile of AZ as it is poisonous to humans. The grizzly bear is hazardous to humans too so why is it the state animal? Because we killed it off? UV is clearly more harmful than exposure to SERPENTINITE which contains minimal amounts of chrysotile asbestos, not the tremolite asbestos, which is known to be harmful to health. Health risks, if any, depend on the asbestos type (chrysotile versus tremolite), exposure frequency, and exposure level. All three factors are ...
In an attempt to explain the much greater risk of respiratory cancer at the same cumulative exposure in asbestos textile workers in Charleston, South Carolina, than in Quebec miners and millers, both exposed to chrysotile from the same source, 161 lung tissue samples taken at necropsy from dead cohort members were analysed by transmission electron microscopy. Altogether 1828 chrysotile and 3270 tremolite fibres were identified; in both cohorts tremolite predominated and fibre dimensions were closely similar. Lung fibre concentrations were analysed statistically (a) in 32 paired subjects matched for duration of employment and time from last employment to death and (b) in 136 subjects stratified by the same time variables. Both analyses indicated that the Quebec/Charleston ratios for chrysotile fibre concentration in lung tissue were even higher than the corresponding ratios of estimated exposure intensity (mpcf). After allowance for the fact that regression analyses suggested that the proportion ...
Serpentine may refer to: La Serpentine, a mountain of the Alps Serpentine (lake), in London, England Serpentine, Victoria, Australia, a town Serpentine, Western Australia, Australia, a town Serpentine National Park, Western Australia Serpentine River (disambiguation) Serpentine Hot Springs, Alaska Serpentine curve, a curve given by a cartesian equation Serpentine (alkaloid), a terpene indole alkaloid Serpentine subgroup, minerals known as serpentine Serpentine soil, soil derived from serpentinite Serpentine (album), a 2002 goth metal album by Flowing Tears Serpentines (Ingrid Laubrock album), a 2016 album "Serpentine" (song), a 2011 country song by Tiffany A 1987 indie rock song by Yo La Tengo on New Wave Hot Dogs A 1996 jazz album with Dave Douglas A 2010 alternative metal song by Disturbed on Asylum A 2006 pop electronica song by Kate Havnevik on Melankton A 2006 electronica song by My My on A Bugged Out Mix A 2009 synthpop song by Peaches on I Feel Cream Serpentine shape, a curve whose ...
From left to right: EFM President Tomoaki Goto, EFM employee Mr. Thanakit, and Bureau President Mr. Jirawat.. EFM is happy to celebrate being awarded with this award for the first time. EFMs motivated employees are the result of the good communication and management carried out at EXEDY Friction Material. EFMs management promises to continue working on further improving the relations it has with its employees. They also plan on, in the future, making EFM an enjoyable place to work at.. ...
Carcinogenesis studies of short range (SR), intermediate range (IR), or intermediate range chrysotile asbestos in combination with the intestinal carcinogen 1,2-dimethylhydrazine dihydrochloride (DMH) were conducted with male and female Syrian golden hamsters. Both forms of chrysotile asbestos were administered at the concentration of 1% in pelleted diet for the entire lifetime of the hamsters starting with mothers of the test animals. Group sizes varied from 125 to 253. Starting at 6 weeks of age, male and female hamsters in the intermediate range chrysotile/DMH study were given oral doses of DMH (4 mg/kg) every other week for a total of 5 doses. There was no adverse effect on body weight gain or survival by either form of asbestos or by asbestos in combination with DMH.. A significant increase (P,0.05) in adrenal cortical adenomas was observed in male hamsters exposed to SR and IR chrysotile asbestos and in females treated with IR chrysotile asbestos when compared to the pooled control groups ...
Call for a Ban on the Mining, Transformation and Export of Chrysotile Asbestos BACKGROUND Asbestos is the generic name for a variety of silicate minerals whose crystals occur in fibrous forms. The term
Minaçu is the seat of one of the worlds largest chrysotile asbestos mines. The Cana Brava mine, located on the left bank of the Tocantins River, occupies a total area of 45 kmª. Asbestos has made Minaçu one of the richest municipalities in the state of Goiás. The industrial zone has capacity to produce ten percent of all the chrysotile asbestos fiber sold in the world. It is the largest mine in Brazil and the third in the world, after mines in Russia and Canada. On the Seplan Index of Economic Development (2000) Minaçu ranked 13 out of 146 municipalities in the state. See Seplan. In 2007 there were 43 industrial units and 259 retail units. There were 3 bank branches: Banco do Brasil S.A., Banco Itaú S.A., and BRADESCO S.A. The main sectors employing the population were: industry-159 workers-and commerce-838 workers.. In 2006 there were 107,300 head of cattle, of which 9,600 were dairy cows. The main agricultural products in planted area were rice and corn. There was modest production of ...
The growth of the automotive market will inevitably lead to the rapid development of the spare parts market. As a consequence, increasing competition: selling the same thing and all - does not appeal, the entire liquid product is already someone before, and not can not develop. Such moments are very positive for the market because it forces to create something new A quarter-century ago, manufacturers of brake pads is very successfully used asbestos in the friction material: its properties ensure a stable and relatively high coefficient of friction and high temperature threshold (up to 800 C) allowed a wide field of substance use. However, asbestos component has some drawbacks. Primary - environmental hazards: the friction material emits dust that lingers in the air and falling into the lungs, causing serious injury. And so, in the early 90s, in many countries around the world, launched the campaign on replacement of polluting product safer materials; acute was the need to find an equal ...
Pin-on-disc testing was used to investigate the sliding behavior and the wear products of a low-steel friction material against a cast iron disc at different applied loads, to investigate the effect of the temperature rise induced by frictional heating. The testing rig was operated in a clean chamber with a purified incoming air flux. The outgoing flux carries the wear particles to an impactor that counted and sorted them by average diameter and weight. At increasing applied loads, corresponding to a proportional increase of the pin-disc contact temperature, the coverage of both the pin and disc surface by a friction layer was found to increase too. The relevant X-Ray diffraction patterns revealed the presence of a large amount of graphite and different compounds originating from the friction material and from the counterface disc, mainly iron oxides, as concerns this latter. After the test at the lowest investigated load, i.e., 1 kg, the disc worn surface exhibited abrasive grooves and a ...
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Shelter is one of the basic necessities discovered by humans as early as the prehistoric times. The earliest shelters were built using stones, clay a
Serpentine may refer to a single mineral but more often to a group of minerals including antigorite, chrysotile, clinochrysotile, and lizardite, which are altered products of basic and ultra-basic rocks. Rock composed of these minerals is called serpentin...
How did life begin? There may be new answers to that old question. Scientists are investigating deep-sea vents rich in serpentine, a green rock that may have had the right chemical compounds to help life form.
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Government of India. Dear Minister of Health & Family Welfare, Minister of Labour & Employment and Minister of Forests & Environment:. We respectfully wish to bring to your attention our deep concerns regarding efforts currently underway to promote the use of chrysotile asbestos in India.. On December 3 and 4, the International Chrysotile Association, which represents the interests of the global asbestos industry, together with the Asbestos Cement Product Manufacturers Association of India, will be holding a conference in New Delhi to promote use of chrysotile asbestos in India and to put forward the claim that scientific research shows that chrysotile asbestos can be safely used.. This claim is utterly false. The world scientific community has overwhelmingly concluded that chrysotile asbestos causes deadly diseases, such as asbestosis, mesothelioma and lung and other cancers, and that it cannot be safely used.. The International Agency for Research on Cancer and the World Health Organization ...
Asbestos body (AB) concentrations in bronchoalveolar lavage samples of 15 brake lining (BL) workers exposed only to chrysotile have been determined and compared with those from 44 asbestos cement (AC) workers extensively exposed to amphiboles. The mean AB concentrations (263 +/- 802 and 842 +/- 2086 AB/ml respectively) for those groups did not differ significantly but were much higher than those found in control groups. Analytical electron microscopy of asbestos body cores showed that in the BL group 95.6% were chrysotile fibres whereas in the AC group amphiboles accounted for 93.1%. The size characteristics of the central fibres differed for chrysotile and amphibole AB, the former being shorter and thinner. Examination of repeated bronchoalveolar lavage samples showed that the mechanisms of clearance of chrysotile fibres do not affect AB concentration for at least 10 months after cessation of exposure. It thus appears that routine counting of ABs in BAL allows the assessment of current or ...
Background: All forms of asbestos are now banned in 52 countries. Safer products have replaced many materials that once were made with it. Nonetheless, many countries still use, import, and export asbestos and asbestos-containing products, and in those that have banned other forms of asbestos, the so-called controlled use of chrysotile asbestos is often exempted from the ban. In fact, chrysotile has accounted for , 95% of all the asbestos used globally. Objective: We examined and evaluated the literature used to support the exemption of chrysotile asbestos from the ban and how its exemption reflects the political and economic influence of the asbestos mining and manufacturing industry. Discussion: All forms of asbestos, including chrysotile, are proven human carcinogens. All forms cause malignant mesothelioma and lung and laryngeal cancers, and may cause ovarian, gastrointestinal, and other cancers. No exposure to asbestos is without risk. Illnesses and deaths from asbestos exposure are ...
Kathleen Ruff, RightOnCanada.ca. In a letter sent in French on January 9, 2017 and in English on January 23, 2017 to officials at Environment Canada, the President of the International Chrysotile Association, Jean-Marc Leblond, calls on the Canadian government to reverse its decision to ban asbestos by 2018. Officials at Environment Canada have been assigned responsibility for drafting new regulations to implement the Canadian governments decision to ban the manufacture, use, sale, offer for sale, import and export of asbestos by 2018.. Leblond emphasized that since the beginning of the 1980s "successive Canadian governments have defended and wholeheartedly supported the mining and use of chrysotile (asbestos)". He pointed out that the Canadian and Quebec governments gave more than $55 million to the Chrysotile Institute to promote the "safe, controlled and responsible use" of chrysotile asbestos.. Leblond attacked those who oppose asbestos use, calling them an "anti-asbestos crusade which ...
Strategic Friction, is a business dedicated to the manufacture and distribution of friction material for the clutch facing and brake lining industry. Our range of products is wide enough to meet virtually any client requirement.. ...
The six major forms of asbestos (1332214) were reviewed and then the most widely used form, chrysotile (12001295), was examined in more detail. The three largest industries using chrysotile include the asbestos/cement pipe industry, the asbestos friction products industry, and the asbestos textiles industry. A discussion was given for the production operations and products made in each of these in
Since the "Canadian asbestos" to which he was referring was the chrysotile variety, which is derived from serpentine rock, one can see that the mortar resulting from this mixture was probably closer to 90 to 95 percent asbestos. It is unsurprising, then, that brick layers and those in the masonry trades are among those at highest risk for developing asbestos-related diseases.. Chrysotile asbestos, a naturally-occurring mineral found in California , Montana , New England , and Quebec (where it is still heavily mined), is responsible for the disease known as asbestosis. Ironically, this disease killed two of the asbestos industrys founding figures: H.W. Johns, founder of the company that later became Johns-Manville, and Edward Alley, builder of the asbestos mines of Libby, Montana who ultimately owned and operated by one of the most infamous names in the history of asbestos, W.R. Grace & Company.. When chrysotile fibers are inhaled into the lungs, they cause micro-abrasions on the inner surfaces ...
Obtain an Asbestos Abatement Permit. Asbestos Fact:. Asbestos is a material that can be found in buildings and can be harmful to human health. The Districts Asbestos Abatement Program ensures that asbestos removal contractors protect their own health and safety, and the health and safety of building occupants and the general public.. Answers to Common Questions:. What is asbestos?. Asbestos is a group of naturally occurring silicate minerals that separate into thin but strong fibers. Asbestos is a non-combustible, excellent insulator with a very high tensile strength. It is durable, flexible and resistant to wear. Six asbestos minerals were commonly used commercially - chrysotile, amosite, crocidolite, anthophylite, tremolite and actinolite.. How does asbestos harm people?. Undamaged, asbestos may cause no threat. It is when asbestos-containing material is disturbed that tiny asbestos fibers are released. These fibers enter the body through inhalation or ingestion. What are the health effects ...
What is Asbestos? Asbestos is a generic term for six different naturally occurring mineral formations which have the common characteristic of their crystalline structure being able to be separated into long, thin fibers. The fibers can be curved (serpentine asbestos, or chrysotile) or straight, "needle-like" fibers (the amphiboles). Chrysotile is the most common type of asbestos in the United States and has been mined in various locations in the United States. Asbestos fibers are present in the air throughout the United States. This is partly due to fibers broken from exposed asbestos containing rocks, but more has been released from asbestos containing products, such as vehicle brakes. Asbestos was called the "miracle mineral" due to its many unique physical properties. Asbestos was added to many building materials because of its ability to retard fire, strengthen products, and acoustically insulate. Asbestos use in building materials peaked in the years following World War II through the ...
May 2002. Executive Summary Although measurement of asbestos fibres in drinking water is technically difficult, research has indicated that most waters, whether or not distributed through asbestos cement pipes, contain asbestos fibres. This is because asbestos is widely found in the environment as a consequence of natural dissolution of asbestos-containing minerals. Asbestos cement pipes can give rise to an increase in the numbers of asbestos fibres in drinking water, particularly when first installed. The risks to health from ingestion of asbestos fibres in food and drinking water have been extensively studied by both epidemiology and by experiments in laboratory animals. Most epidemiological studies found no association with any specific gastrointestinal cancers, although a small number of studies did find a weak positive association. The studies considered the best did not provide evidence for a link between asbestos in drinking water and cancer. Of the 8 long-term animal studies, only one ...
Asbestos is still widely being used for house roofing. Many people in the village dont know the dangers of asbestos which are used as roof/canopy. Asbestos enters the body by inhalation. Long term inhalation of asbestos can pose a deadly health risk.. The impact from inhaling asbestos fibres can not be seen in a short time frame. Sometimes the symptoms will appear within 20-30 years after the exposure to the first asbestos fibres.. Asbestos fibres can cause asbestosis (the occurrence of scar tissue in the lungs), lung cancer and mesothelioma (cancer in the Mesothelium membrane). The risk of this disease will increase due to the large amount inhalation of asbestos fibres.. Also, the risk of lung cancer caused by inhalation of asbestos fibres is greater than cigarette smoke. This is because asbestos consists of small fibres that are easily separated, so if the fibres are airborne and inhaled will be harmful to the body health.. Usually, this asbestos fibre can pose a health risk if it entered ...
Montréal, September 19, 2012 - The Québec Medical Association (QMA) applauds the decision of the federal government to no longer oppose listing the chrysotile form of asbestos as a hazardous substance in Annex III to the Rotterdam Convention. This highly significant decision affirms the hazard of asbestos in all its forms.. Since 1945, the medical community has been compiling and identifying the pathologies related to asbestos. The QMAs position on the use of asbestos is clear: chrysotile asbestos is a carcinogen and causes asbestosis. Continuing to operate asbestos mines and export this product are unacceptable activities from a medical standpoint.. According to the Institut national de santé publique, even when controlled, the safe use of asbestos is not achievable in practice. It is therefore important, for the health of asbestos workers and the health of people around the world, to favour banning the mining and export of this substance.. The Québec Medical Association is now urging the ...
Youve definitely heard about asbestos registers, but what do they refer to exactly? In 2011, The Work Health and Safety Regulation changed, making it mandatory for workplace managers to have an asbestos register, which is document that contains information about the asbestos found in the workplace. The register includes details about the asbestos type found, its location and condition.. Youve definitely heard about asbestos registers, but what do they refer to exactly? In 2011, The Work Health and Safety Regulation changed, making it mandatory for workplace managers to have an asbestos register, which is document that contains information about the asbestos found in the workplace. The register includes details about the asbestos type found, its location and condition.. Many of the buildings which date back to the 20th century contain asbestos in them, because during this time asbestos was used heavily in the construction industry. After researchers discovered the serious health complications ...
Non-friable, or bonded ACM is used to refer to ACM in which the asbestos is firmly bound in the matrix of the material. These materials are unlikely to release measurable levels of airborne asbestos fibre into the environment if they are undisturbed. Therefore, they generally pose a lower risk to health. However, activities that may abrade the ACM such as drilling, grinding have the potential to release higher concentrations of airborne asbestos fibres into the environment. The non-friable ACM are mainly made up of asbestos fibres together with a bonding compound (such as cement), and typically contain up to 15 per cent asbestos. Non-friable ACM are solid, quite rigid and the asbestos fibres are tightly bound in the material. Non-friable ACM are the most common in domestic houses. They are commonly called fibro, asbestos cement and AC sheeting. Examples of non-friable ACM include asbestos cement products (flat, profiled and corrugated sheeting used in walls, ceilings and roofs, moulded ...
Non-friable, or bonded ACM is used to refer to ACM in which the asbestos is firmly bound in the matrix of the material. These materials are unlikely to release measurable levels of airborne asbestos fibre into the environment if they are undisturbed. Therefore, they generally pose a lower risk to health. However, activities that may abrade the ACM such as drilling, grinding have the potential to release higher concentrations of airborne asbestos fibres into the environment. The non-friable ACM are mainly made up of asbestos fibres together with a bonding compound (such as cement), and typically contain up to 15 per cent asbestos. Non-friable ACM are solid, quite rigid and the asbestos fibres are tightly bound in the material. Non-friable ACM are the most common in domestic houses. They are commonly called fibro, asbestos cement and AC sheeting. Examples of non-friable ACM include asbestos cement products (flat, profiled and corrugated sheeting used in walls, ceilings and roofs, moulded ...
Non-friable, or bonded ACM is used to refer to ACM in which the asbestos is firmly bound in the matrix of the material. These materials are unlikely to release measurable levels of airborne asbestos fibre into the environment if they are undisturbed. Therefore, they generally pose a lower risk to health. However, activities that may abrade the ACM such as drilling, grinding have the potential to release higher concentrations of airborne asbestos fibres into the environment. The non-friable ACM are mainly made up of asbestos fibres together with a bonding compound (such as cement), and typically contain up to 15 per cent asbestos. Non-friable ACM are solid, quite rigid and the asbestos fibres are tightly bound in the material. Non-friable ACM are the most common in domestic houses. They are commonly called fibro, asbestos cement and AC sheeting. Examples of non-friable ACM include asbestos cement products (flat, profiled and corrugated sheeting used in walls, ceilings and roofs, moulded ...
No. of Report Pages: 118. Price of Report (Single User Licence): $ 2900. Purchase the Report Now @ http://www.absolutereports.com/purchase/10420329. After the basic information, the Asbestos Market report sheds light on the production. Production plants, their capacities, global production and revenue are studied. Also, the Asbestos Market growth in various regions and R&D status are also covered.. Following are Major Table of Content of Asbestos Industry:. • Asbestos Market Competition by Manufacturers. • Asbestos Production, Revenue (Value) by Region (2011-2021). • Asbestos Supply (Production), Consumption, Export, Import by Regions (2011-2021). • Asbestos Production, Revenue (Value), Price Trend by Type. • Asbestos Market Analysis by Application. • Asbestos Manufacturers Profiles/Analysis. • Asbestos Manufacturing Cost Analysis. • Industrial Chain, Sourcing Strategy and Downstream Buyers. • Asbestos Market Forecast (2016-2021). Get Discount on Asbestos Market Research Report ...
While mesothelioma is the most well known illness caused by exposure to asbestos, it is not the only one. Another significant illness caused by asbestos is asbestosis. The first diagnosis of asbestosis was made in England, in 1924 following the death of a 36 year old asbestos worker.. Asbestos is a fibrous mineral that can be found in several different forms. Asbestos is known for its strength and resistance to heat. While its like to serious respiratory illnesses is now well known, asbestos is not banned in the United States. However, the use of asbestos has been extensively regulated by both state and federal laws since the mid 1970s, due to its carcinogenic properties and the other health problems it causes. The risk of exposure to asbestos is increased, however, because laws regulating the use of asbestos outside of the U.S. are often lax, so goods imported from other counties are still imported into the country.. Another common cause of exposure to asbestos is during the remediation or ...
The Canadian government privately acknowledged that the dangers of asbestos warranted limits on export, but publicly blocked international efforts to add greater restrictions on the use of asbestos, according to press reports. Exposure to asbestos causes serious respiratory diseases including. ...
Youve come to the right place for all youre asbestos needs - here at asbestosremovalquote we make it nice and simply - complete the attached QUOTE FORM and receive a FREE QUOTE for all your Asbestos problems.. Please make sure you use a valid phone number so we can contact you as quickly as possible - we normally contact within 1 hour of the quote form been completed.. Asbestos removal in Crumlin BT29 is a very dangerous task, and should only be performed by Crumlin Asbestos expert contractors - get a FREE QUOTE TODAY. If you are thinking of buying a home or other properties in the Crumlin area, you might want to make sure that the place is safe first by having a local Crumlin, BT29 asbestos removal companies evaluate for asbestos contamination. Having asbestos in the workplace or home can cause health problems in the future which could result in asbestos law suits, so its always better do the right thing now. Crumlin asbestos removal companies can include pre and post demolition asbestos ...
Youve come to the right place for all youre asbestos needs - here at asbestosremovalquote we make it nice and simply - complete the attached QUOTE FORM and receive a FREE QUOTE for all your Asbestos problems.. Please make sure you use a valid phone number so we can contact you as quickly as possible - we normally contact within 1 hour of the quote form been completed.. Asbestos removal in Burford OX18 is a very dangerous task, and should only be performed by Burford Asbestos expert contractors - get a FREE QUOTE TODAY. If you are thinking of buying a home or other properties in the Burford area, you might want to make sure that the place is safe first by having a local Burford, OX18 asbestos removal companies evaluate for asbestos contamination. Having asbestos in the workplace or home can cause health problems in the future which could result in asbestos law suits, so its always better do the right thing now. Burford asbestos removal companies can include pre and post demolition asbestos ...
Victims of the massive flooding in the Australian state of Queensland face mounting asbestos exposure risks, authorities say. Thousands of homes have been damaged and as the waters recede, many floors and walls need to be removed. Residents have begun cleaning up their homes, removing walls and sheeting but many contain asbestos and asbestos-containing materials. One residents house is made of weatherboard and is now dilapidated because the water damage has exposed and disturbed the asbestos inside. "The kitchens asbestos, the bedrooms are asbestos, the studys asbestos and the dining room is asbestos," she told ABC. "This house went under in 74 and we suspect that they had to do it cheaply, and so every rooms different." The local government has warned residents not to perform the removal work themselves and to use the help of experienced asbestos abatement professionals, but that may not be an option for many The structures of some homes are on the verge of collapse due to the water damage ...
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02/18/2013 // Chicago, IL, USA // Cooney & Conway // Jessica McNeil // (press release). CHICAGO, IL - (News: asbestos attorney news) - Most people are aware of the common places where asbestos has been found, such as in insulation, drywall, and automotive parts. But asbestos has shown up in some lesser-known and somewhat surprising places too. As a result, in the past, some people may have unknowingly exposed themselves to asbestos, which can cause mesothelioma, lung cancer, and asbestosis, while doing chores around the home or using everyday products. One place where you may have least expected to find asbestos is in a handheld hair blow dryer. Blow dryers were often manufactured using asbestos, but it took a photographer to discover that the dryers actually emitted asbestos fibers. The photographer was drying film negatives with a blow dryer, and noted small flecks of dust on the negatives, which turned out to be asbestos. It was found that exposure to asbestos through use of a hair dryer was ...
On behalf of the President of the Collegium Ramazzini, Dr. Philip J. Landrigan and its 180 elected Fellows in countries around the world, I am writing to express the Collegium s strong disagreement with the above document produced by the OSWER. We consider the approach that is proposed in this document will have the effect of unjustifiably diminishing the regulatory level of concern that is directed to control of exposures to chrysotile asbestos. We are of the strongly held scientific opinion that any relaxation of regulatory concern around chrysotile will result in increased human exposures to carcinogenic chrysotile asbestos worldwide and that these exposures will result in suffering, disease and death caused by asbestosis, lung cancer, malignant mesothelioma and other asbestos-related cancers. The Collegium Ramazzini considers this document an affront to both good science and to morality ...
Awareness of the hazards associated with asbestos fibers may be a recent medical discovery, however, it was first linked to health issues as early as the first century, A.D. by a Roman historian. The recommended treatment was for workers to wear a wet cloth over their mouths and noses, and to work upwind when mining asbestos rock. Often the first signs of asbestos exposure diseases may take twelve to forty years after initial exposure to appear. Studies in the 1960s, along with the previous findings from earlier studies, found there was a significant risk for unprotected workers exposed occupationally to asbestos fibers in the air. Many people who are exposed to asbestos fibers show no symptoms associated with exposure. It has not been determined how to predict who will be affected once exposed. However, it has been medically proven that people who had unprotected exposure to airborne asbestos fibers do have an increased risk of contracting one or more of the following three diseases. ...
Performance under pressure. Performance Frictions brake system technology provides unique solutions for modern tactical military wheeled vehicles. PFC has provided OEM pads for the HMMWV as well as engineered a disk brake system for numerous other armored vehicles.. Military applications require high flexibility in friction material selection because of the wide range of performance requirements. PFCs innovative use of materials, advanced process technology, and patented Zero Drag technology, delivers unrivalled braking performance with high reliability.. For applications ranging from motorcycles and light reconnaissance vehicles to tactical vehicles such as the HMMWV, JLTV, M-ATV, and heavier, the best solution is Performance Friction. No other company has the ability to provide lightweight, high performance brake systems for these vehicles while maintaining OEM TS 16949 quality standards. All products are engineered and manufactured in the USA.. Test-proven. Over 5,000 friction materials ...
Where does asbestos come from and why is it used in products? What are asbestos ecological impacts? How are people exposed to asbestos? How long does asbestos stay in the environment? How much asbestos exposure is necessary to cause lung disease? What diseases are caused by asbestos exposure?
An asbestos inspection is an assessment to determine whether regulated asbestos-containing materials are present in a facility, or parts of a facility, where proposed demolition or renovation activities will take place. Asbestos laws and rules require asbestos inspections to be performed by an Indiana-licensed asbestos inspector at all demolition and renovation operations (with the exception of exempt noncommercial residential buildings with four or fewer dwelling units) before beginning any activities, including the removal of regulated asbestos-containing materials or the preparation of the job site for the planned demolition or renovations.. Asbestos inspections are essential for owners and operators of demolition and renovation operations to determine their notification and emission control and work practice requirements. To find and verify the license status of Indiana-licensed asbestos professionals, including inspectors and contractors, use the Indiana Professional Licensing Agencys free ...
Before what building date do I have to worry about asbestos in my home? That is a question that many owners have. To answer that question completely there are many different parts that need to be understood. One of the parts well discuss today is the timeline for certain acts that banned some asbestos applications and products. A complete ban on asbestos in the US is not in place.. As a reference, the EPA website discusses the timeline for bans on asbestos. It can be found at: https://www.epa.gov/asbestos/us-federal-bans-asbestos.. The first ban took place in 1973 at is was for Asbestos Containing Material (ACM) in fireproofing/insulating materials that were spray applied.. Asbestos pipe insulation and block insulation was banned for use on boilers and hot water tanks in 1975. Additional criteria are involved to further define the types of insulation.. 1977 saw the banning of asbestos in artificial fireplaces and wall compounds. This is where ACM joint compound and was banned.. Spray applied ...
The iron content of asbestos affects important properties such as the electrical resistance of electrical insulation; because the iron content of asbestos varies by type of asbestos selected, this property is controlled for special applications. This article discusses the iron content of various forms of asbestos. This article series describes the physical properties of asbestos including its mechanical, chemical, electrical and related properties both in pure asbestos form and when asbestos is mixed with other materials like cement or rubber.
Understanding Asbestos - 20 Key Points For Health And Safety. #1: Some 33 percent of households throughout Australia have asbestos, found in materials like the weatherboard, brick and fibrous material.. #2: Asbestos has been accepted and included inside of many construction projects that were built prior to the year 1987, due to changes in law and standards.. #3: You and the people inside of your household can be in serious danger from a health and safety standpoint if any asbestos is moved or disturbed during work inside of your home.. #4: You should never tackle any do it yourself projects if your home has asbestos in a particular area.. #5: You should always operate with any kind of work under the assumption that you have asbestos, just to be on the safe side.. #6: Even though asbestos is incredibly serious, you need to understand that it is completely manageable.. #7: Any time you think that you may have asbestos in your building, you should make sure that you reach out to an asbestos ...
EPA is releasing the Asbestos Project Plan describing its current and planned actions to ensure a coordinated agency-wide approach to identify, evaluate and reduce the risks to people from asbestos exposure. The Asbestos Project Plan represents EPAs comprehensive effort to address asbestos concerns and protect public health. The plan focuses on improving the state of the science for asbestos; identifying and addressing exposure and seeking risk reduction opportunities associated with asbestos in products, schools and buildings; and better understanding and minimizing asbestos exposures through assessment and cleanup. The agency is also currently updating the Integrated Risk Information System (IRIS) file for asbestos and has started work on the non-cancer assessment. As part of its effort to address asbestos-related issues comprehensively, EPA is working with other federal agencies and with state and tribal representatives to ensure that there is appropriate coordination among government ...
Cutters that were constructed from the 1930s to the late 1970s should be assumed to contain some level of asbestos. Find out how you could have been exposed to asbestos on a United States Coast Guard cutter.
Exposure to asbestos fibers can lead to serious health risks. Decreasing exposure to asbestos will reduce the health risks associated with that. Lung Cancer Exposure to asbestos has been associated with an increased chance of lung cancer. Other Diseases There arent any known immediate effects related to exposure to asbestos.. Asbestos fibers should not be inhaled so there ought to be a good deal of protective gear and clothing. In years past they were added during the production of roofing and siding materials to strengthen them, to increase their durability, and to provide a limited amount of insulation and fireproofing to your home. They cannot penetrate the skin. In earlier times asbestos linings accounted for as many as 99% of the marketplace. Asbestos pipe coverings may be crumbled and are deemed friable.. Throughout time, shingles are made available in an assortment of materials. The broken shingles arent a hazard till they are exposed. You also ought to dispose of the previous shingles ...
Serpentine is a group of minerals that are usually green in color. It is used as gemstone, architectural stone, carving material and source of asbestos. Serpentinite is a rock composed mainly of serpentine minerals.
WorkCover NSW has reported that a prohibition notice has been issued to a building site in Sydney, following the discovery of asbestos in fibrous building panels imported to construct a residential building.. The panels were imported from China and were thought to be asbestos free, but subsequent testing by the National Association of Testing Authorities (NATA) showed they contained chrysotile (white) asbestos.. The expanded polystyrene (EPS) panels had been cut, and therefore significantly damaged on-site, with the builder ordered to engage an asbestos removal licence holder to remediate the site and remove the remaining panels.. WorkSafe is not aware of this building material being imported for use in Victoria but is alerting both importers and suppliers of the need to take precautions to ensure that building products they import and supply do not contain asbestos. If there is uncertainty as to whether a material contains asbestos, testing by a NATA approved asbestos laboratory must be ...
According to a notice from WorkSafe B.C. at the site, potential asbestos-containing materials, like stucco, have been disturbed at the site and that dust and debris, suspected of containing asbestos, are "present in a form which may be rendered airborne.. "The presence of disturbed, potentially containing asbestos materials at this job site may result in workers being exposed to asbestos fibres.". Trish Knight Chernecki, senior manager of government and media relations for WorkSafe B.C., said in an e-mail that a qualified asbestos testing contractor indicated to WorkSafe B.C. there was no evidence in their assessment of potential for asbestos exposure to the public. The organization did notify Island Health about the possibility of an asbestos release at a workplace as per protocol.. Clearview Demolition, which is doing the work, has conditions to meet to lift the order, including retaining the services of a qualified hazardous materials consultant to do a detailed risk assessment, an inspection ...
The term "asbestos" is understood to mean a group of naturally occurring fibrous minerals. Asbestos is toxic, as well as heat and acid resistant. As it is non-combustible, tear and tensile-resistant, flexible, elastic, and insulating, asbestos was formerly used in industrial, commercial and residential buildings, for instance in spray asbestos, fabrics, foams, panel linings, vinyl floor boards, cardboard, cords.. The fine fibres of asbestos are invisible to the naked eye. When they enter the lungs, however, they can cause severe lung damage, rhinitis, or abdominal disease, including cancer. The Ordinance on Hazardous Substances has therefore named asbestos a carcinogenic substance. The use of asbestos was banned in Germany in 1993, and in the EU since 2005.. The rehabilitation of asbestos-contaminated buildings is demanding, and it can only be carried out by experienced, well-equipped and approved specialist companies. Lindner is a founding member of the Association for Asbestos Treatment (FAS). ...
Despite ongoing talk of plans to relax regulations around asbestos control, Bureau Veritas has been quick to assert that the UK must maintain current standards if we are to continue to effectively tackle the very real risk still presented by asbestos.. Historically, the UK has been always been a leader within the European Union in terms of Health & Safety regulations, particular in relation to asbestos. In fact, the UKs Asbestos (Prohibitions) (Amendment) Regulations 1999, came into force five years ahead of the European deadline for the ban on asbestos use in building materials. In addition, a large proportion of the EU regulation regarding asbestos stems from legislation created by the British government.. Surprisingly then, 2017 has seen a flurry of talk concerning recently appointed Brexit minister, Steve Baker and his plans for the UK to have softer asbestos laws - a move which Bureau Veritas, a market leader in asbestos control certification, testing and inspection, has said could have ...
Make sure if youre having asbestos removed from your property that you take advantage of any council schemes - whether subsidiary or payment plan - available to you. What are the main benefits of asbestos removal?. In addition to making your home safer, having asbestos materials removed and replaced with modern, safer ones can add value to your property and make it more attractive to potential buyers.. It is your legal responsibility to disclose to a buyer if your property contains asbestos. This could mean a buyer could be less likely to purchase the property. If youre looking to sell your home at some point in the future, its worth looking into asbestos removal as a means to add worth to your property and to increase interest in it.. Who can undertake asbestos removal/stripping for me?. Do not attempt to remove asbestos yourself.. Though there are guides online for DIY asbestos removal which explain how best to protect yourself but the handling and disposal of the materials must be carried ...
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?
The development of mesothelioma is a direct result of asbestos exposure. This rare and aggressive cancer overwhelmingly affects men who have worked in certain industries since the mid-twentieth century. Union workers built this country and are the back-bone of our industrial economy. Unfortunately, men who were employed in as union workers, in trades such as insulators, steam fitters, electricians, machinists and auto workers, were exposed to asbestos on the job. Countless products that these workers handled in the course of their daily lives- including asbestos cements, insulation, brakes, clutches, gaskets, roofing materials, and plaster - contained asbestos. The use of asbestos in these products posed a danger to union workers and warnings by the manufacturers and suppliers of these potentially lethal materials were mostly nonexistent or inadequate. Also, premises owners operating large industrial facilities where union workers did their job often failed to provide a safe place to work. ...
The Stirling Times received a phone call from a resident who said he had seen old ovens with asbestos lugs put out for verge collection, and was concerned for residents and City workers.. Robert Vojakovic, from the Asbestos Disease Society in Osborne Park, said items thrown out during verge collections can often contain asbestos, and residents must take more care when disposing of old whitegoods for their familys and council workers safety.. The annual council verge collection is sometimes fraught with risk associated through exposure to asbestos fibres, in particular old electrical and gas appliances such as stoves, ovens, heaters and old hair dryers, Mr Vojakovic said.. This type of exposure to asbestos dust has a multiplicative effect, that is, the resident placing the appliance on the verge would have some exposure and indeed the public who are walking by or picking from the verge odds and ends would also be exposed to asbestos fibres.. The City of Stirling said it was taking all ...
If your old floors are covered with nine-inch by nine-inch vinyl or asphalt tile, it is quite likely that tile was made with asbestos fibers. Sitting there on the floor, your antiquated tile or sheet vinyl wont cause harm. But as it ages, it becomes brittle and can break apart, releasing microscopic asbestos fibers into the air. So dont try to pry up the floor yourself.. Even the sticky black adhesive used to glue that tile or sheet flooring to the substrate contained asbestos in the 1960s and 1970s. Some 12-inch by 12-inch asphalt tile also contained asbestos, and so did some sheet linoleum. Far better to be safe than sorry. Contact your local municipality to see what the asbestos-abatement regulations are in your area. You can find a list of certified asbestos testing and abatement contractors near you by checking with the Better Business Bureau. Have an authorized inspector determine if there is asbestos in your floor covering and, if there is, make arrangements to have a certified ...
Contact with asbestos can result in the introduction of serious health issues later in existence, including asbestos cancer. The overwhelming majority of folks that develop asbestos-related illnesses, like mesothelioma cancer and asbestos, were uncovered to asbestos sooner or later throughout their work history. Numerous jobs are regarded as in more risk for exposure. Shipyard and metal employees can be one of the most prone to happen to be uncovered to asbestos throughout its heyday however; today construction employees are most likely in the risk for working with asbestos. Cancer along with other health conditions is typical of these employees ...
Employment for a cumulative period for at least five years with a minimum of two years prior to December 31, 1982, in an industry and an occupation in which the claimant (a) handled raw asbestos fibers on a regular basis; (b) fabricated asbestos-containing products so that the claimant in the fabrication process was exposed on a regular basis to raw asbestos fibers; (c) altered, repaired or otherwise worked with an asbestos-containing products such that the claimant was exposed on a regular basis to asbestos fibers; or (d) was employed in an industry and an occupation such that the claimant worked on a regular basis in close proximity to worked engaged in the activities described in (a), (b) and/or (c ...
The Canadian government is to be commended for moving ahead to legislate a comprehensive ban on the import, export, use and sale of asbestos and asbestos-containing products. However, the proposed regulations have weaknesses and omissions that need to be rectified. There needs to be a strong, clear commitment from the Canadian government that it will work with the provinces to create a national registry of asbestos-containing buildings, to create national standards for asbestos-removal, to initiate a national strategy to inform Canadians of the continuing hazards posed by asbestos present in buildings and infrastructure and to launch a national campaign to provide information and assistance to asbestos victims and their families.. Of particular concern is the proposed exemption of the millions of tons of asbestos residue around former mine sites, particularly in Quebec. Projects are already under way to re-use these asbestos residues and Quebec government regulations continue to permit workers ...
Some archeologists believe that ancients made shrouds of asbestos, wherein they burned the bodies of their kings, in order to preserve only their ashes, and prevent their being mixed with those of wood or other combustible materials commonly used in funeral pyres.[15] Others assert that the ancients used asbestos to make perpetual wicks for sepulchral or other lamps.[11][13] In more recent centuries, asbestos was indeed used for this purpose. Although asbestos causes skin to itch upon contact, ancient literature indicates that it was prescribed for diseases of the skin, and particularly for the itch. It is possible that they used the term asbestos for alumen plumosum, because the two terms have often been confused throughout history.[15] Asbestos became more widespread during the industrial revolution, in the 1860s it was used as insulation in the U.S. and Canada. Development of the first commercial asbestos mine began in 1879 in the Appalachian foothills of Quebec.[16] By the mid 20th century ...
Some forms of paint. The mere presence of asbestos in your home is not hazardous until it is damaged or disturbed. The best thing to do with asbestos material in good condition is to leave it alone. If you suspect a part of your home may contain asbestos, check periodically for tears, abrasions or water damage. If the asbestos material is only slightly damaged, limit access to the area and do not tough or disturb it. If you are going to be making changes in your home that may disturb the asbestos materials, or you suspect the materials are more than slightly damaged, professional asbestos repair or removal is needed.. The first step in asbestos removal is calling an industrial hygiene firm to inspect the affected area so a proper assessment can be made as to the location, extent of damage and so recommendations can be made for correction and prevention. Also, the firm can perform checks after the removal or repair to assure the area has been properly cleaned. With the report from the industrial ...
Asbestos Removal. Asbestos removal is a very dangerous task, and should only be performed by Asbestos expert contractors.. Any claims of asbestos in a building, either residential or commercial should be taken very seriously due to the health problems it can cause. Any testing, toxic material identification and subsequent asbestos removal should only ever be conducted by asbestos experts, since the material is extremely hazardous to handle.. Asbestos Removal - get a free quote today. ...
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Trump claimed asbestos is "100 percent safe, once applied," and that it just "got a bad rap." That, unsurprisingly, was a stretch. Asbestos can be safe, but only if its in perfect condition and not shedding any fibers, which are toxic and can cause cancer. But the Occupational Safety and Health Administration says the asbestos often used in fireproofing will "readily release airborne fibers if disturbed"-and that theres "no safe level of asbestos exposure for any type of asbestos fiber.". This isnt the first time Trump has been linked to unsafe work conditions and crooked contractors. Polish construction workers who worked on the construction of Trump Tower sued Trump, with some telling the New York Times that "they often worked in choking clouds of asbestos dust without protective equipment." The contracting company used by Trump hired the Poles-undocumented immigrants who were working off the books-at only $4- to $5-an-hour, dramatically less than the wages of union members working on the ...
Asbestos is a mineral fiber that can only be 100% positively identified as to type and potential asbestos content with a special type of microscope. There are several types of asbestos fibers and in years past, they were added to a wide variety of products to strengthen them and to provide heat insulation and fire resistance. In years past, items like the brake shoes on cars and grandmas ironing cord often had an asbestos content. From studies of people that were exposed to breathing asbestos fibers over an extended period of time, we know that it can lead to increased health risks like: lung cancer, asbestosis (permanent scarring of the lung tissue), and mesothelimoa (cancer of the abdominal cavity and chest lining). The symptoms of these diseases dont usually surface until about 20-25 years after the first exposure ...
Asbestos removal training. Trainees learning how to safely remove asbestos as part of a job training programme. Asbestos comprises silicate minerals. It is used as insulation in the building industry. If the asbestos degrades and is exposed, asbestos fibres will be released into the air. These are small and can be inhaled deep into the lungs. As the body is unable to degrade them, lung damage due to asbestos (asbestosis) and lung cancers such as mesotheliomas, result. - Stock Image C020/8555
Many people dont realize that asbestos is not yet banned completely in the United States and many other countries. While asbestos use today is rather limited, human error can play a part in hazardous occurrences of asbestos exposure when previous use of this material becomes disturbed. One way you can help is to spread awareness of this deadly fiber and its potential dangers by speaking to your schools officials, perhaps the school principal, about asbestos use as well as prior inspections in the building and tell other parents about any red flags. Another way is to become involved in the asbestos awareness community and help protect the rights of current and future asbestos exposure victims ...
Asbestos is the name applied to a group of naturally occurring minerals that are mined from the earth. Generally, there are six types of regulated asbestos and chrysotile is the most common. In many instances a single product will have a mixture of different asbestos types. All types of asbestos can break into very tiny fibers. These individual fibers can be broken down so small that they can only be identified using an electron microscope. Some individual fibers may be up to 700 times smaller than the diameter of a human hair. ...
An asbestos victim who has contracted the asbestos cancer mesothelioma has won a massive twenty million dollars after contracting the disease through exposure to asbestos on a secondary basis. The woman, and nursing professor, is thought to have been exposed to asbestos through washing clothing.. It is claimed that she used to wash her grandfathers clothes back in the 1960s, and this is where the secondary exposure is thought to have occurred. She went on to develop the asbestos related cancer, which can take decades to develop from the time of exposure.. ...
A study of dose/response relationships for cancer mortality and morbidity in asbestos cement workers was conducted. The cohort consisted of 1929 males employed at a Swedish asbestos cement factory for at least 3 months between 1907 and 1977. The comparisons consisted of 726 workers from the same county who had no known asbestos exposure. Dose estimates for each asbestos (1332214) exposed worker we
The interaction between healthy cells and exposure to asbestos fibers has been studied in earnest. Unfortunately, the environmental exposure commonly encountered by the certain populations in industrial countries has been unacceptably high. One interesting study on point is called, +Asbestos Fibres in the Lungs of Chrysotile Miners and Millers + a Preliminary Report+ by N.…
Asbestos Abatement and cleanup ought to include wetting just about any area within the room which have not been completed and also remains to be throughout question for holding Asbestos. Even when you suppose you bought all of it, it is nonetheless necessary to maintain every thing moist and also out of your air. When you have got finished a Asbestos Abatement, you must decontaminate by means of wetting yourself down and removing all protective clothing. Always take away respirators last in spite of everything garments happen to be removed. In the event that dust particles tend to be nonetheless present, do not vacuum or maybe sweep these people up. As a substitute, moist them down and take away them the same approach. Shower thoroughly right after completing this Asbestos Abatement, then when the process if finished, ensure to acquire the "after" sample to grantee that all Asbestos may be properly faraway from the area. ...
You may choose to have the asbestos removed from your dwelling. When there is asbestos in the house and it is in danger of becoming disturbed, make certain it is kept wet. Usually it is mixed with other materials to actually form the products. It is composed of tiny fibers which may become airborne and lodge in the lungs. It is probably the best insulator known to man. Most recently, it has been widely used in the construction industry, because of its ability to trap heat effectively and because of its durability. It is projected that asbestos containing materials are found in over four million buildings in the united kingdom.. If theres a lot of asbestos, it may have a hefty sum to restore. It has been used in a variety of other building materials, for example, in decorative coatings such as textured paints and plasters. Friable asbestos is more inclined to become airborne.. The absolute most important point to consider about asbestos in your house is that its mere presence does not typically ...
Between the risks of employee exposure and the constantly changing regulations, asbestos is one of the biggest and most confusing problems facing companies today, but AES is here to help. With over 20 years of experience, we have the knowledge and expertise to ensure that your asbestos projects are completed safely and within the relevant OSHA & LDEQ guidelines.. Current OSHA & LDEQ asbestos regulations define any material or product which contains more than 1% asbestos to be asbestos-containing material (ACM). Accordingly, there are government regulations that must be followed to ensure the safety of anyone who may come into contact or work with this material. AES has extensive knowledge of these regulations. Let AES ensure that your project is in compliance with all government related standards.. AES specializes in environmental consulting related to asbestos abatement, including Area and Personnel (OSHA) Air Monitoring. Our Industrial Hygiene Technicians are LDEQ Licensed and have received ...
Between the risks of employee exposure and the constantly changing regulations, asbestos is one of the biggest and most confusing problems facing companies today, but AES is here to help. With over 20 years of experience, we have the knowledge and expertise to ensure that your asbestos projects are completed safely and within the relevant OSHA & LDEQ guidelines.. Current OSHA & LDEQ asbestos regulations define any material or product which contains more than 1% asbestos to be asbestos-containing material (ACM). Accordingly, there are government regulations that must be followed to ensure the safety of anyone who may come into contact or work with this material. AES has extensive knowledge of these regulations. Let AES ensure that your project is in compliance with all government related standards.. AES specializes in environmental consulting related to asbestos abatement, including Area and Personnel (OSHA) Air Monitoring. Our Industrial Hygiene Technicians are LDEQ Licensed and have received ...
How to recognize asbestos transite pipe in buildings - Asbestos Identification in buildings: How to find recognize and identify asbestos or asbestos-containing materials in buildings by visual inspection methods - list and photos of asbestos containing building products
The vintage mill in LaFayette that was severely damaged by fire is expected to undergo demolition and asbestos cleanup procedures after its owner reached a settlement with the Environmental Protection Agency (EPA), a September 3 article in Times Free Press reported.. According to reports, Drennon Crutchfield in August agreed with the EPA to shoulder the expenses needed to demolish and remove asbestos from the Barwick Mills. An old building in the facility that was believed to have contained asbestos minerals was abandoned after it was destroyed the fire last November. EPA staff David Andrews had confirmed that the buildings ceilings and plumbing system had used asbestos. Residents near the carpet mill were advised not to go out of their house after the fire due to levels of particles presence in the air. Crutchfield is expected to spend $850,000 in the whole asbestos abatement and demolition jobs that could last before December, Andrews also said.. Asbestos is a highly toxic mineral that can ...
Depending on the location and condition of the asbestos, you have several courses of action to do deal with it; enclosure, encapsulation, asbestos removal, or leaving as is.. If there is asbestos in your home but it is in good condition, with no fraying of fibers, and is not likely to be disturbed by occupants, then it is better to just leave it alone. Any abatement where none is required will be money wasted, and could also result in creating a hazardous condition where none existed before. But if the material containing the asbestos has fibers frayed and loose, or is located in a high traffic area of the house, then this is a hazardous condition and you should consider enclosure or removal.. Enclosure of asbestos is surrounding it with other materials or an airtight partition wall or ceiling; this method contains any loose fibers and is less expensive than removal. Heating ducts or pipes with asbestos insulation, for example, can be wrapped with lagging cloth tape, or enclosed in a soffit type ...
Asbestos professionals are trained in handling asbestos material. The type of professional will depend on the type of product and what needs to be done to correct the problem. You may hire a general asbestos contractor or, in some cases, a professional trained to handle specific products containing asbestos.. Asbestos professionals can conduct home inspections, take samples of suspected material, assess its condition, and advise about what corrections are needed and who is qualified to make these corrections. Once again, material in good condition need not be sampled unless it is likely to be disturbed. Professional correction or abatement contractors repair or remove asbestos materials.. Some firms offer combinations of testing, assessment, and correction. A professional hired to assess the need for corrective action should not be connected with an asbestos-correction firm. It is better to use two different firms so there is no conflict of interest. Services vary from one area to another around ...
If you suspect a property you currently own or manage may have loose-fill asbestos insulation in the walls, ceiling or under the floors, you may also be wondering if you should find a company to help you find out.. After all, if you listen to the experts, loose-fill asbestos insulation can become a major health hazard.. Yes, in fact, loose-fill asbestos insulation can be very dangerous. Especially if it has been located in your propertys walls and floors for many years and has escaped into the air.. That is why most experts say you should have your home checked for it and, if tests do find it located in your property, deal with the problem as soon as you possibly can.. What is loose-fill asbestos insulation? - This is a type of asbestos that was used for insulation in homes several decades ago.. It tends to be seen as a health hazard as it is made up of very small pieces of asbestos. These pieces can escape from under floors and in walls and easily get into the air. Once there, they can be ...
Consumers are being warned about an unlicenced asbestos removalist targeting Newcastle and Hunter Valley residents.. Minister for Better Regulation Matt Kean said SafeWork NSW has issued a warning over reports of a tradie quoting cheap asbestos removal work, who only takes cash payments.. "Im urging all property owners to be aware of an unlicenced trader in the region who is offering quick and cheap quotes for asbestos removal," Mr Kean said.. "We all know the devastating impact asbestos can have on a persons health. So its absolutely critical this dangerous product is only handled by a licenced professional.. "If an operator offers to remove asbestos from your property for cash, do not engage them, and report them to SafeWork immediately.. "We will take strong action against anyone working without a licence, with fines ranging from $3,600 for individuals to $18,000 for body corporates.". Mr Kean said consumers can find a list of licenced asbestos removalists on the SafeWork ...
We have extensive experience with asbestos matters, from handling individual claims through managing mass tort litigation involving tens of thousands of cases. Regardless of the type of case, we focus on identifying the most cost-effective way to minimize our clients risks.. Our representation extends beyond the defense of asbestos litigation. We also advise clients on asbestos risk management considerations, regulatory standards, and changes to the law that could impact how they conduct business. Our goal is to keep our clients well informed of past, current and future asbestos risks.. In light of the nature of asbestos litigation, which often involves a limited number of plaintiffs law firms repeatedly asserting the same or similar claims against defendants, clients facing extensive asbestos litigation are positioned to benefit from Thompson Hines SmartPaTH®, a service delivery approach that leverages legal project management, process efficiency, flexible staffing and value-based pricing ...
Asbestos Removal Sunderland - Sunderland asbestos removal, asbestos surveys & asbestos removal companies in Sunderland. Find asbestos surveys in Sunderland.
Asbestos Removal Huddersfield - Huddersfield asbestos removal, asbestos surveys & asbestos removal companies in Huddersfield. Find asbestos surveys in Huddersfield.
Johnson & Johnson is voluntarily recalling one lot of its Johnson’s Baby Powder product due to the presence of asbestos, according to a press release from the FDA. The FDA found chrysotile fibers during testing of this lot (#22318RB) and noted that it found no asbestos when testing another lot of the product.  
Watch Jetscan Surveys 8-inch Asbestos Cement Sewer Line. (2) Video | Environmental XPRT. The Jetscan video nozzle surveys an 8-inch asbestos cement sewer line. ...
Do you work for a company that renovates buildings built prior to 1990?. We had a successful first year at the Homestyles show with many contractors and home & building owners coming to our booth with questions about mold, asbestos and radon.. I was prompted to write this article after one particular visitor came to our trade show booth for some answers and explained his concerns of his employer not testing for asbestos on their job sites. This gentleman told me that since the downturn in the economy the well known Saskatoon company he works for has moved from constructing new buildings to demolition and renovation work, just as many other builders have done in an effort to keep their businesses afloat.. The story is that they are running into vermiculite and other questionable building materials that most likely contain asbestos and when it has been brought up by himself or other employees, they are told that the materials most likely dont contain asbestos. They are also told that in order to ...
Do you work for a company that renovates buildings built prior to 1990?. We had a successful first year at the Homestyles show with many contractors and home & building owners coming to our booth with questions about mold, asbestos and radon.. I was prompted to write this article after one particular visitor came to our trade show booth for some answers and explained his concerns of his employer not testing for asbestos on their job sites. This gentleman told me that since the downturn in the economy the well known Saskatoon company he works for has moved from constructing new buildings to demolition and renovation work, just as many other builders have done in an effort to keep their businesses afloat.. The story is that they are running into vermiculite and other questionable building materials that most likely contain asbestos and when it has been brought up by himself or other employees, they are told that the materials most likely dont contain asbestos. They are also told that in order to ...
Tarmac Marine Ltd was fined a total of £130,544.57 last week for failing to properly deal with asbestos within one of their vessels and keeping their crew safe, in a prosecution brought by the Maritime and Coastguard Agency.. Tarmac Marine Ltd, who pleaded guilty to the offences, was fined £120,000 by Southampton Magistrates Court and ordered to pay a victim surcharge of £120 and £10,424.57 towards the cost of the prosecution.. The vessel The City of Westminster is a 96 meter dredger with 12 crew operating around the UK.. In January 2014 a survey identified the presence of asbestos in pipework from its build in 2008 with a recommendation that this was dealt with immediately. However, Tarmac Marine failed to act on this report and the crew were not informed of the presence of the asbestos on the vessel, according to the Maritime and Coastguard Agencys announcement.. The issue came to light in January 2016 when the vessel was required to produce an asbestos free certificate to the Port of ...
Can lung nodules be caused by exposure to asbestos - Can lung nodules be caused by exposure to asbestos? Asbestos & plaques. Exposure to asbestos can commonly cause pleural plaques (nodules in the lining of the lung). Cancer of this lining (mesothelioma) is also associated with asbestos exposure (less common than pleural plaques).
As colleagues and clients, as family and friends, we came together during National Asbestos Awareness Week to comfort and console, but also to fight and to win. We took time to reflect upon the personal battles fought by those suffering from asbestos-related diseases, and we remembered those we know who have lost their lives because of exposure to the deadly substance. We also reaffirmed our efforts to find a cure for diseases such as mesothelioma by funding research, and we furthered our call to action to ban asbestos in the U.S.. As Simmons Hanly Conroy partner Michael Angelides wrote in an op-ed published this morning (view here: U.S. Ban of Asbestos Long Overdue), "Still, just as the country spends billions on asbestos cleanup, our nation continues to import and consume almost 2,000 metric tons of asbestos for use in everyday products. Its an obvious and deadly contradiction. We need to encourage our nations leaders and lawmakers to stop U.S. import and use of a known cancer-causing ...
23 June 2011 Toronto - The Canadian Cancer Society is shocked and embarrassed that the Canadian delegation has chosen to oppose adding chrysotile asbestos to the Rotterdam Convention, a list of hazardous substances. This is the third time Canada has played a role in blocking the inclusion of asbestos under the Rotterdam Convention, which operates by consensus.. "This is an unethical decision. We know that all forms of asbestos cause cancer and we are frustrated and deeply concerned about Canadas lack of leadership on this important worldwide health issue," says Paul Lapierre, Vice President, Public Affairs and Cancer Control, Canadian Cancer Society. "Its imperative that the health of people around the world be put ahead of the interests of the asbestos industry. The federal government is continuing to ignore the advice of its own health department which recommended in 2006 that Canada support the addition of this substance.". Worldwide about 107,000 people die every year from disease related ...
During National Asbestos Awareness Week, April 1-7, I urge Americans to learn about the dangers of asbestos exposure.. Asbestos is a mineral fiber that occurs naturally in our environment; in rock and in soil. Because of its fiber strength and heat resistance, asbestos has traditionally been used in a variety of building construction materials, as insulation and as a fire retardant.. Activity that disturbs asbestos causes small asbestos fibers to float in the air. Inhaling these fibers leads to asbestos-related diseases. Three of the major health effects associated with asbestos exposure are lung cancer; mesothelioma, a rare form of cancer that is found in the thin lining of the lungs, chest, abdomen and heart; and asbestosis, a serious progressive, long-term, non-cancer disease of the lungs.. Anyone who disturbs asbestos is at risk. However, it is of special concern for construction, insulation, and demolition workers, pipefitters, boilermakers and others who might disturb asbestos found in old ...
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
As a rock, asbestos is actually very solid. It is unique, however, because it can be broken up into fibers that peel off-a very odd property for such a solid material. When asbestos was discovered, it was hailed as one of the best materials ever. Asbestos was used for construction, ship building, insulation and electrical tools, and textiles. Asbestos is heat and flame resistant, making it perfect for industries that have high levels of heat and pressure within their buildings. It was also used in homes and consumer products such as hair dryers and clothing. Asbestos fibers can be short and sharp and also long, wavy and silky. It was this latter form of the mineral that was added to the textile making process. Little was known about asbestos, but when the truth came out, it worried everybody. Asbestos is actually a very harmful fiber that can cause mesothelioma, a rare form of cancer.. For textile mill workers, the asbestos added to the fabrics put them at risk every day for exposure. Protective ...
Asbestos exposure in Fulton, OH. We have worked with clients suffering from asbestos injuries such as mesothelioma and lung cancer who worked at this Ohio asbestos job site location in Fulton, OH. Where were you exposed to asbestos? We may be able to help.
Shipyard workers who served between World War II and the Korean War were very likely exposed to asbestos. The material was ideal for use in shipbuilding because of its ability to resist corrosion and high temperatures. It has been used as insulation for boilers, incinerators, hot water pipes and steam pipes. The asbestos dust tended to build up around these areas and other inadequately ventilated parts of the ship, which led to human exposure aboard vessels.. Navy veterans who worked below deck on naval warships or submarines were also likely to develop mesothelioma due to asbestos exposure. They worked (and sometimes lived) in extremely tight quarters with dangerously high levels of asbestos dust lingering in the air. Poor ventilation systems prevented adequate air exchange and resulted in highly concentrated levels of asbestos to remain in the air for Navy personnel to breathe in. Unfortunately, because Navy veterans and shipyard workers carried the asbestos dust and fibers home on their ...
The Occupational Safety and Health Administration (OSHA) has maintained that "there is no safe level of asbestos exposure for any type of asbestos fiber," but despite these warnings, asbestos is still legal and still used in the United States. Different government agencies have their own rules and regulations for asbestos control to maintain exposure levels in the workplace and the environment. Those who work directly with asbestos consistently have a higher chance of contracting an asbestos-related disease than those who do not. Regulations and guidelines have been installed to keep the level of asbestos exposure at a minimum and are necessary among those who are in danger of being exposed in the work place.. Permissible Exposure Limit (PEL) ...
For lung cancer, there is evidence of a joint effect between smoking and asbestos. However, little is known about a possible joint effect between asbestos and other inorganic particles.. The objective was to study the association between lung cancer and occupational asbestos exposure in the abscence or presence of additional exposure to inorganic particles.. A 12-year follow-up study was conducted to analyse lung cancer incidence in a cohort of 13,814 retired workers previously exposed to asbestos and volunteering to participate in a multiregional survey program (Asbestos Related Diseases Cohort, ARDCO) from October 2003 and December 2005. From complete work histories, occupational exposure to asbestos, mineral wools, refractory ceramic fibers, crystalline silica and cement dust were assessed by job-exposure matrices. Association between lung cancer and occupational asbestos exposure was estimated by Cox model, adjusted for smoking, in the presence or absence of additional exposure to inorganic ...
The serpentine is highly sheared/pulverized and contains abundant chrysotile asbestos. "5258". NGS data sheet. U.S. National ... Both were associated with the mining and processing of chrysotile asbestos. Other minerals mined from the serpentine mass ... The serpentine soils harbor several rare plant species, including the Federally listed Threatened San Benito evening primrose ( ... The Gem mine (private) located within the serpentine mass is the only source of gem-grade benitoite in the world. The rare ...
The surrounding mineral soils come from serpentine which has naturally occurring asbestos. Mining of asbestos, sand, gravel and ...
One mineral in the serpentine group, chrysotile, is a type of asbestos. Peridotites can take on a massive form or may be in ... Peridotite that has been hydrated at low temperatures forms serpentinite, which may include chrysotile asbestos (a form of ... a process in which the pyroxenes and olivines are converted to green serpentine. This hydration reaction involves considerable ... serpentine) and talc. Layered intrusions with cumulate peridotite are typically associated with sulfide or chromite ores. ...
Even where asbestos is not present, sepiolite is often mistaken for it. Careful analytical techniques such as X-ray diffraction ... In the United States, it occurs in serpentine in Pennsylvania (as at Nottingham, Chester County) and in South Carolina and Utah ... It occurs also in serpentine at Hrubschitz near Kromau in Moravia. Additionally, sepiolite is found to a limited extent at ... Sepiolite occurs as a secondary mineral associated with serpentine. It can occur as a precipitate in arid environments. It may ...
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.. *^ The Health Effects of Asbestos: An Evidence-based Approach. ... Armley asbestos disaster, Spodden Valley asbestos controversy, Turner & Newall *^ Report to the Chairman, Committee on the ... "Asbestos Exposure". National Cancer Institute, USA.. *. "Environmental Health Guidance Note - Asbestos" (PDF). Queensland ...
The Cobb Valley, with mafic and ultramafic rocks, serpentine, talc, and asbestos are of great interest. Abel Tasman National ... Asbestos, talc and magnesite have been mined in the Cobb area. Coal has been mined in Collingwood, Takaka, Nelson-Richmond, ... These basement rocks include Ultramafic rocks, such as Serpentine and Dunite, and valuable minerals, such as Gold. The Nelson ...
Amosite is a rare asbestiform variety of grunerite that was mined as asbestos only in the eastern part of the Transvaal ... Usually it coexists with hornblende or actinolite, magnesium clinochlore chlorite, talc, serpentine-antigorite minerals or ... The origin of the name is Amosa, the acronym for the mining company "Asbestos Mines of South Africa". Cummingtonite is commonly ...
Asbestos Chrysotile Committee on Asbestos: Selected Health Effects, 2006, Asbestos: Selected Cancers, National Academies Press ... a magnesium phyllosilicate part of the serpentine group. Other asbestiform minerals include riebeckite, an amphibole whose ... The most common asbestiform mineral is chrysotile, commonly called "white asbestos", ... fibrous form is known as crocidolite or "blue asbestos", and brown asbestos, a cummingtonite-grunerite solid solution series. ...
Serpentine soils have high levels of metals such as asbestos, copper, mercury and magnesium, among others, that are toxic to ... also of marine origin and also folded and faulted with thick serpentine rock interbedded. Serpentine rock forms from peridotite ... Many of these serpentine-adapted plants are also endemic to the state, as this type of soil is not widespread outside of ... Some plants have not only adapted, but have evolved to grow almost exclusively in serpentine soils. The leather oak (Quercus ...
During the second decade of the 20th century, Denholm's development was boosted due to the presence of asbestos, serpentine, ...
... large and slow moving upheavals formed the serpentine rock and the asbestos fiber which sometimes accompanies serpentine. This ... Several tons of asbestos were mined in 1870. By 1910, Lowell produced half the asbestos mined in the United States. Lumber ... A rare fern species, Adiantum viridimontanum, grows which can tolerate the high nickel content of serpentine. Serpentine also ... The asbestos mine in Lowell was of economic importance from the 1940s to the mid-1980s. In the mid-1940s, the Belvidere mines ...
Six minerals have been classified as "asbestos" including chrysotile of the serpentine class and those belonging to the ... Mineral fibers include the asbestos group. Asbestos is the only naturally occurring long mineral fiber. ... Mineral fibers can be particularly strong because they are formed with a low number of surface defects, asbestos is a common ...
It is also known from one station on serpentine on Deer Isle, Maine. The fern thrives in thin serpentine soils on sunny, ... The type specimen of A. viridimontanum was collected from a talus slope at the old asbestos mine on Belvidere Mountain on ... The eastern serpentine outcrops where A. viridimontanum thrives have relatively few endemics, compared to serpentine exposures ... aleuticum, on the serpentine tableland of Mount Albert by Merritt Lyndon Fernald in 1905, botanists began to search for western ...
Chrysotile, a species of serpentine, is the most common mineral species in industrial asbestos, as it is less dangerous in ... However, asbestos are known carcinogens, and cause various other illnesses, such as asbestosis; amphibole asbestos ( ... are considered more dangerous than chrysotile serpentine asbestos. Cyclosilicates, or ring silicates, have a ratio of silicon ... The kaolinite-serpentine group consists of T-O stacks (the 1:1 clay minerals); their hardness ranges from 2 to 4, as the sheets ...
... stony loam soil which has developed on ultramafic rock containing magnesium minerals such as serpentine or asbestos. This soil ... www.epa.gov/superfund/health/contaminants/asbestos/pdfs/noa_factsheet.pdf Naturally Occurring Asbestos:Approaches for Reducing ... http://www.epa.gov/superfund/health/contaminants/asbestos/pdfs/noa_factsheet.pdf Naturally Occurring Asbestos:Approaches for ... Dubalkella may present a health hazard due to presence of asbestos. Any Dubakella land which has been developed or is scheduled ...
14873, labeled as "fibrous serpentine (asbestos)- San Vittore, Balangero". Mindat.org Webmineral.com Handbook of Mineralogy ... Fibrous balangeroite is limited to the serpentine-infested rim of the northern Lanzu Ultramafic Massif, with its abundance in ... However, Balangeroite does not lead to serious health problems caused by asbestos fibers. Balangeroite is classified as an ... It is a completely separate mineral from any true asbestos. It is economically important for providing building material, ...
There has never been any commercial use of the soil within the Pindos serpentine zone other than that mentioned (the asbestos ... Asbestos is called αμίαντος in Greek (amiante in French) and means something that is not soiled (e.g. by fire). They had to be ... The relation to asbestos was identified when, a few months later, two consecutive patients appeared with massive pleural ... Louto was obtained by digging soil from hills 5-10 km from Metsovo within the "Pindos serpentine zone". It was shaped like a ...
... or white asbestos is the most commonly encountered form of asbestos, accounting for approximately 95% of the ... serpentine ) ⟶ 3 Mg 2 SiO 4 Forsterite + SiO 2 silica + 4 H 2 O water {\displaystyle {\ce {{\overset {Chrysotile\ (serpentine ... 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 ...
Serpentine group[edit]. Serpentine minerals have a sheet or layered structure. Chrysotile is the only asbestos mineral in the ... 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 ...
A 2010 effort led by State Senator Gloria J. Romero, a Democrat from Los Angeles, sought to remove serpentine from its perch as ... Organizations such as the Asbestos Disease Awareness Organization have supported the move as the olive green rock is a source ... Geologists have rallied to oppose the bill, arguing that there is no way to be harmed from casual exposure to serpentine. The ... of chrysotile, a form of asbestos that can cause mesothelioma and other forms of cancer. ...
Asbestos (fibrous serpentine- or amphibole minerals) Auerlite (variety of thorite) Avalite (chromian variety of illite) ... asbestiform serpentine) Citrine (yellow variety of quartz) Cleveite (variety of uraninite) Clinochrysotile (polytype of ... Seifertite Sekaninaite Selenium Seligmannite Sellaite Semseyite Senarmontite Sepiolite Sérandite Serendibite Serpentine group ...
... asbestos, amosite MeSH D01.578.725.050.050.100 --- asbestos, crocidolite MeSH D01.578.725.050.075 --- asbestos, serpentine MeSH ... asbestos, amosite MeSH D01.837.725.700.760.535.400 --- asbestos, serpentine MeSH D01.837.725.700.760.535.800 --- talc MeSH ... asbestos, amosite MeSH D01.524.500.050 --- asbestos, serpentine MeSH D01.524.500.850 --- talc MeSH D01.552.020.042 --- actinium ... asbestos, crocidolite MeSH D01.837.725.700.760.070.110 --- asbestos, serpentine MeSH D01.837.725.700.760.535 --- magnesium ...
Serpentine minerals have a sheet or layered structure. Chrysotile is the only asbestos mineral in the serpentine group. In 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 ...
Asbestos is composed of microscopic needle-like crystals made from magnesium-Iron silicate. Asbestos is linked to an array of ... Caution should be taken when working in serpentine soils or when working with crushed serpentine rock. Serpentine-rich rock or ... Serpentine tolerant plants are evolutionary younger than non-serpentine plants. The heterogeneity of serpentine communities ... Serpentinite is composed of the mineral serpentine; the two terms are often used to mean the rock and soil. Serpentine soils ...
... chrysotile asbestos). The asbestos content can be released to the air when serpentine is excavated and if it is used as a road ... is one polymorph of serpentine and is one of the more important asbestos minerals. Other polymorphs in the serpentine group may ... Asbestos from serpentine can also appear at low levels in water supplies through normal weathering processes, but there is as ... The serpentine subgroup (part of the kaolinite-serpentine group) are greenish, brownish, or spotted minerals commonly found in ...
... they produced an abundance of serpentine, which is the source of chrysotile asbestos. List of mountain ranges of South Africa ... The Asbestos Mountains is a range of hills in the Northern Cape province of South Africa, stretching south-southwest from ... The mountains were named for the asbestos which was mined in the 20th century and is found as a variety of amphibole called ... Substitutes for asbestos now include ceramic, carbon, metallic and Aramid fibers, such as Twaron or Kevlar. David Goldblatt ...
Riebeckite (asbestos) - Na2FeII3FeIII2Si8O22(OH)2 ... Serpentine subgroup *Antigorite - Mg3Si2O5(OH)4. *Chrysotile - ...
White asbestos, also called chrysotile asbestos or serpentine asbestos, is one of the six types of asbestos. About 95% of ... asbestos found in buildings is white asbestos.[1] It is considered by experts to be less dangerous than the other types of ... "Asbestos: An Overview of What it Is & Exposure Risks".. .mw-parser-output cite.citation{font-style:inherit}.mw-parser-output . ... asbestos, but it is still a major health hazard and exposure can cause cancer and asbestosis. ...
It is used as gemstone, architectural stone, carving material and source of asbestos. Serpentinite is a rock composed mainly of ... Serpentine is a group of minerals that are usually green in color. ... Use of Serpentine: Asbestos. Some varieties of serpentine have a fibrous habit. These fibers resist the transfer of heat, do ... Serpentine. A group of minerals used as architectural, ornamental, and gem materials. A source of asbestos.. Article by: Hobart ...
... Locality type:. Deposit ... Click here to view Serpentine Subgroup data. Locality Data:. Click here to view Shaghasi asbestos deposit (Shakhsi), Pul-i-Alam ... ⓘLowgar asbestos deposit (Loghar; Logar), Pul-i-Alam District, Logar, Afghanistan. ... ⓘAbparan asbestos deposit, Mohammad Agha District (Muhammad Agha District), Logar, Afghanistan. ...
Amiăng trắng [Chrysotile asbestos]  World Health Organization. Regional Office for the Western Pacific (Manila : WHO Regional ... Browsing Information products by Subject "Asbestos, Serpentine". 0-9. A. B. C. D. E. F. G. H. I. J. K. L. M. N. O. P. Q. R. S. ...
Amiăng trắng [Chrysotile asbestos]  World Health Organization. Regional Office for the Western Pacific (Manila : WHO Regional ...
Serpentine group[edit]. Serpentine minerals have a sheet or layered structure. Chrysotile is the only asbestos mineral in the ... 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 ...
White serpentine asbestos was the most common forms of asbestos used in the United States, representing 95% of asbestos ... Almost no demolition takes place without inspection for white serpentine asbestos.. White serpentine asbestos has been used for ... Serpentine asbestos refers to a configuration of rocks that typically contain white asbestos fibers. These fibers are ... Prior to the dangers of asbestos being discovered, white serpentine asbestos was desirable for its water and fire proofing ...
Results for asbestos equipment from ABC, ABCOV, Air-O-Cell and other leading brands. Compare and contact a supplier serving ... CHRYSOTILE - Serpentine Asbestos. Fine, silky, flexible white Chrysotile fibers (also known as "white asbestos") make up 80% to ... 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 ...
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 ... Serpentine Asbestos. Serpentine asbestos fibers appear curly or twisted when viewed under a microscope. This serpent-like ... Home / Asbestos / History of Asbestos. History of Asbestos Use. Asbestos had a long history of production and devastation ...
Chrysotile asbestos. by World Health Organization Material type: Book; Format: print Publisher: Geneva : World Health ... Chrysotile asbestos. by World Health Organization , International Programme on Chemical Safety Material type: Book; Format: ...
Serpentine group. Serpentine minerals have a sheet or layered structure. Chrysolite is the only asbestos mineral in the ... Other regulated asbestos minerals, such as tremolite asbestos, CAS No. 77536-68-6, Ca2Mg5Si8O22(OH)2; actinolite asbestos (or ... File:Blue asbestos.jpg Blue asbestos (crocidolite) from Wittenoom, Western Australia. The ruler is 1 cm. File:Blue asbestos ( ... Asbestos in the World. *White Gold Pioneers: Asbestos Mining - The origins of asbestos mining, illustrated with many early ...
... that occurred among a panel of seven experts surrounding the science of how fiber length relates to toxicity of asbestos and ... Serpentine. Fibrous clays. Glass wool. Alumina. Para-aramid. chrysotile. polygorskite (attapulgite). Glass filaments. Graphite ... Asbestos Versus MMVF. Based on animal and human studies, natural occurring asbestos fibers that are of respiratory size, long ... Asbestos and certain asbestos compounds. In: IARC Monographs on the Evaluation of the Carcinogenic Risk to Humans. Suppl. 7. ...
This CSEM focuses on asbestos toxicity. The goal of Case Studies in Environmental Medicine (CSEM) is to increase the primary ... There are two classes of asbestos: serpentine and amphibole.. *Asbestos is now used much less widely in the United States and ... Figure 1. Photo of serpentine asbestos. Figure 2. Photo of amphibole asbestos. ... www.epa.gov/asbestos/asbestos-laws-and-regulations#phaseout.. Research showing a clear link between asbestos exposure and ...
Professor Ian Plimer launches a climate sceptic book for school children and defends his view that chrysotile is not asbestos ... Mineralogically its a serpentine mineral. MATT PEACOCK: So its not asbestos? IAN PLIMER: It is called commercially asbestos. ... MATT PEACOCK: Called asbestos.. IAN PLIMER: A family of serpentine minerals. MATT PEACOCK: Called asbestos.. IAN PLIMER: ... The mineral chrysotile is a serpentine mineral. MATT PEACOCK: Even the asbestos industry calls it asbestos. I mean the town ...
What are the most important things to know about asbestos in an emergency? ... What are other names or identifying information for asbestos? What is the WHMIS 1988 classification? ... Other Names: Chrysotile, White asbestos, Serpentine asbestos. Main Uses: Historical use in industrial applications, ... Asbestos. CLOSE ALL. What are other names or identifying information for asbestos?. CAS Registry No.: 1332-21-4. ...
Chrysotile, the fibrous form of the mineral serpentine, is the best-known type and accounts for about... ... asbestos: Any of several minerals that readily separate into long, flexible fibres. ... asbestos - Student Encyclopedia (Ages 11 and up). A natural mineral fiber that is either mined or quarried, asbestos can be ... Chrysotile occurs chiefly in association with massive serpentine. After mining or quarrying, the asbestos fibre is freed by ...
New Jersey, USA serpentine. Asbestos mines of Asbestos and Black Lake in Quebec, Canada. crystalline limestones at Crestmore, ... It occurs in serpentine, in chlorite or dolomitic schists, or in crystalline limestones as an alteration product of periclase. ...
Asbestos fibers are very durable and can tolerate ve... ... Asbestos are crystallized silicate minerals that form fibers ... Asbestos, Serpentine. A type of asbestos that occurs in nature as the dihydrate of magnesium silicate. It exists in two forms: ... Asbestos, Amosite. Asbestos, grunerite. A monoclinic amphibole form of asbestos having long fibers and a high iron content. It ... The fibers are generally brittle and cannot be spun, but are more resistant to chemicals and heat than ASBESTOS, SERPENTINE. ( ...
Learn more about fireproofing materials and asbestos exposure to these materials today. ... For many years Americans relied on asbestos for its fireproofing properties, later learning that it was dangerous and could ... Geographically, asbestos occurs all over the world. Serpentine-class asbestos is the most common natural form, and it was used ... Exposure to airborne asbestos fibers is the only known cause of mesothelioma. Friable serpentine asbestos fireproofing ...
Asbestos and benzo(a)pyrene diol epoxide (BPDE) are pulmonary carcinogens with synergistic interaction in causing lung cancer. ... Asbestos, Serpentine / toxicity*. Bronchi / cytology, drug effects*, metabolism. Cells, Cultured. Down-Regulation. Drug ... Asbestos and benzo(a)pyrene diol epoxide (BPDE) are pulmonary carcinogens with synergistic interaction in causing lung cancer. ... Gene profiling of normal human bronchial epithelial cells in response to asbestos and benzo(a)pyrene diol epoxide (BPDE).. ...
Where is chrysotile (asbestos) in serpentine stone?. Serpentine stone (magnesium iron silicate hydroxide) has a striped pattern ... There are three important mineral polymorphs of serpentine: antigorite (non-asbestos mineral), lizardite and chrysotile ( ... asbestos mineral). X-ray diffraction cannot discriminate among these polymorphs because their peaks appear at nearly the same ...
If you have ever seen natural asbestos, it looks about like fiberglass. They are both basicaly rock. (serpentine and silicate ... Asbestos is, of course, but even in the event of very high-level exposure (which rarely happens anymore in this country), it ... Granted I feel one day they will outlaw fiber glass the same way they did asbestos ... Hey fireboy,did you miss that part?. Oh ... asbestos stays in the lungs because it forms little hooks that burrow into your flesh, and it is extreamly difficult for cillia ...
Asbestos minerals belong to two mineral families: the serpentines and the amphiboles. In the serpentine family, the only common ... Asbestos includes chrysotile, cummingtonite-grunerite asbestos (amosite), anthophyllite asbestos, tremolite asbestos, ... Anthophyllite asbestos................. (Mg,Fe)(7)Si(8)O(22)(OH)(2) Asbestos Fiber: A fiber of asbestos meeting the criteria ... anthophyllite asbestos, tremolite asbestos and actinolite asbestos. These are the only amphibole minerals that have been ...
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.. *^ The Health Effects of Asbestos: An Evidence-based Approach. ... Armley asbestos disaster, Spodden Valley asbestos controversy, Turner & Newall *^ Report to the Chairman, Committee on the ... "Asbestos Exposure". National Cancer Institute, USA.. *. "Environmental Health Guidance Note - Asbestos" (PDF). Queensland ...
  • At one time, however, it was the second-most commonly used form of asbestos and, as a result, many individuals were exposed to it during its peak use. (mesothelioma.com)
  • Al-Zoning of Serpentine Aggregates in Mesh Texture Induced by Metasomatic Replacement Reactions Oyanagi, Ryosuke;Okamoto, Atsushi;Harigane, Yumiko;Tsuchiya, Noriyoshi 2018-04-14 00:00:00 Abstract Serpentinization of oceanic lithosphere commonly proceeds with the development of mesh texture. (deepdyve.com)
  • Chrysotile asbestos is the most commonly seen form, and is usually used for textiles and commercial products. (bloggernews.net)
  • 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)
  • EPA has also developed a list of commonly used Asbestos acronyms . (ehso.com)
  • The bodies of serpentine are commonly elongate and conformable with the enclosing rocks. (usgs.gov)
  • Where Is Asbestos Commonly Found In The Home, When and How Should It be Removed? (ehso.com)
  • Asbestos exposure primarily results from breathing in asbestos fibers, and less commonly from ingesting asbestos fibers. (ca.gov)
  • Until the mid-1980's asbestos was commonly used in drywall and or drywall compounds. (ffhi.ca)
  • Is commonly obtained from Africa and its name is actually an acronym that stands for Asbestos Mines of South Africa. (mesothelioma.us)
  • It is commonly considered the most dangerous form of asbestos. (mesothelioma.us)
  • Physicians and scientists were well aware of what happens when asbestos fibers enter human lungs. (asbestos.net)
  • When such fibers reach the alveoli (air sacs) in the lung, where oxygen is transferred into the blood, the foreign bodies (asbestos fibers) cause the activation of the lungs' local immune system and provoke an inflammatory reaction dominated by lung macrophages that respond to chemotactic factors activated by the fibers. (wikipedia.org)
  • And chrysotile, while dangerous if it gets into the lungs as small particles, is not the most dangerous form of asbestos fibers. (blogspot.com)
  • Released into the air by a bulldozer blade scraping a home pad or new roadway, asbestos can lurk in the lungs for decades before striking with deadly force. (dailypress.com)
  • The closest thing to an epidemiological smoking gun is another study that found greatly elevated levels of asbestos in the lungs of four deceased dogs and cats from the area. (dailypress.com)
  • The ability of asbestos fibers to split into smaller and smaller strands allows asbestos fibers to enter the human body through the lungs and literally slide into and between the cells of soft tissues. (bloggernews.net)
  • Fibrous asbestos can fracture into fibers small enough that they can penetrate deep into the lungs, where they can interact with the body to cause cancer or other illnesses. (apsu.edu)
  • Microscopically small asbestos fibers can be inhaled deep into the lungs and lodge there. (apsu.edu)
  • When inhaled or ingested, the microscopic asbestos fibers work their way into the lining of the lungs, abdomen or heart. (maacenter.org)
  • A chronic lung disease resulting from scar tissue on the tissue lining the lungs after prolonged asbestos exposure. (maacenter.org)
  • What are fire hazards and extinguishing media for asbestos? (ccohs.ca)
  • What are the stability and reactivity hazards of asbestos? (ccohs.ca)
  • In most cases, asbestos-containing materials in good condition don't pose any health hazards and should be left alone. (asbestos.com)
  • Virtually everything an environmental or safety professional needs to understand about asbestos hazards, compliance, and remediation is on these pages, the downloads and links. (ehso.com)
  • Other potential asbestos hazards in the sculpting process include use of serpentine, soapstone, and greenstone as casting stones. (wiredprnews.com)
  • Health hazards from asbestos fibers have been recognized in workers exposed in shipbuilding trades, asbestos mining and milling, manufacturing of asbestos textiles and other asbestos products, insulation work in the construction and building trades, brake repair, and a variety of other trades. (ehso.com)
  • 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)
  • Since the mid 1980s, many uses of asbestos are banned in many countries. (wikidoc.org)
  • 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)
  • The following tables show land and water releases of asbestos by major U.S. industries as well as contemporary uses of asbestos. (heritageresearch.com)
  • There are several uses of asbestos, particularly in the realm of duct and pipe insulation, insulation in buildings , as well as in ceiling and wall panels. (mesotheliomasymptoms.com)
  • While the uses of asbestos in America today are much more limited, the toxin can still be found in thousands of older homes , buildings and schools built before 1980. (maacenter.org)
  • Prior to the dangers of asbestos being discovered, white serpentine asbestos was desirable for its water and fire proofing ability as well as an excellent insulator. (laws.com)
  • Myth: Companies that manufactured and sold asbestos products were unaware of the dangers of asbestos exposure. (asbestos.com)
  • Mesothelioma.com is dedicated to providing the latest medical information on mesothelioma, spreading awareness about the dangers of asbestos exposure and providing victims with free resources. (mesothelioma.com)
  • 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)
  • Since knowledge of the dangers of asbestos has become more widespread, use of asbestos has widely declined. (wiredprnews.com)
  • But the damage had already been done for many American workers exposed to asbestos fibers in their workplace. (asbestos.net)
  • The survey was requested by the staff engineer for the United States Department of Agriculture to determine whether Forest Service personnel were exposed to asbestos fibers when they traveled along Parks Creek Road. (cdc.gov)
  • Individuals who have been exposed (or suspect they have been exposed) to asbestos fibers on the job or at home via a family contact should inform their physician of their exposure history and any symptoms (see Question 7 ). (ehso.com)
  • Demolition workers, drywall removers, and firefighters also may be exposed to asbestos fibers. (ehso.com)
  • Shipbuilders, textile and construction workers, home remodelers, workers who do asbestos abatement, and miners who are exposed to asbestos fibers are among the many workers at risk. (merckmanuals.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)
  • Certain applications of asbestos, such as building material, have been against the law for decades now. (laws.com)
  • Additionally, products and buildings that were built with asbestos decades ago may still put people at risk of exposure today. (asbestos.net)
  • Manufacturers of asbestos products ignored and even hid the scientific findings for decades, as the demand for their products was at an all-time high. (asbestos.net)
  • Because of its light weight, tremendous insulation properties, flexibility, and toughness, asbestos was viewed for many decades as a miracle substance that could make almost any product better. (bloggernews.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)
  • We collected soils from four locations from two sites-one with naturally occurring asbestos, and another, a superfund site, where asbestos-containing materials were disposed over decades-and performed ecotoxicology tests. (ucsd.edu)
  • To investigate the consequences of improvement in the workplace environment over six decades (1940-96) in asbestos miners and millers from a developing country (Brazil). (bmj.com)
  • Over the decades, though, asbestos has been used in varying degrees in many other professions. (wiredprnews.com)
  • The extensive industrial use of asbestos for many decades has been linked to development of benign and malignant pleuropulmonary disease. (medscape.com)
  • For decades, the Canadian asbestos industry has enjoyed close, some would say intimate, links with the Governments of Canada and Québec, both of which have been more than generous with their financial and political support. (ibasecretariat.org)
  • These and other potentially deleterious health effects of asbestos have been recognized and studied for decades. (geotimes.org)
  • 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 occu. (bioportfolio.com)
  • In addition to manufacturing facilities being a source for asbestos exposure, the EPA reported that as many as 33 different locations throughout Washington received approximately 981 shipments of asbestos-containing vermiculite from a Libby, Montana mine. (asbestos.com)
  • Houses built between 1800 to mid-1980 may have asbestos cloth and or vermiculite as an insulation material in exterior walls, attic spaces, heating ducts and pipes. (ffhi.ca)
  • The experimental results support the atomistic computer simulations providing a realistic description of the adsorption of plasma proteins onto chrysotile and unravelling a key step in the understanding of asbestos toxicity. (royalsocietypublishing.org)