NIOSHTIC-2 Publications Search - 20000103 - Dust explosions overview.
... or transport combustible dusts. The requirements for a dust explosion are: a combustible dust, dispersed in air, a ... This paper is an overview of and introduction to the subject of dust explosions. The purpose is to provide information that ... Explosive-dusts; Explosive-hazards; Dust-velocity; Dust-explosions; Metal-dusts; Dust-particles ... or transport combustible dusts. The requirements for a dust explosion are: a combustible dust, dispersed in air, a ...https://www.cdc.gov/niosh/nioshtic-2/20000103.html
NIOSHTIC-2 Publications Search - 00026786 - Air Sampling for Cotton Dust.
Lint is the predominant fraction in the measurement of total dust and the vertical elutriator seems effective in the collection ... Cotton dust sampling experiments performed at various cotton mills show that, to avoid significant under or over sampling, ... Air-quality-measurement; Air-contamination; Cotton-industry; Dust-samplers; Sampling-methods; Air-sampling-equipment; Dust- ... Cotton dust sampling experiments performed at various cotton mills show that, to avoid significant under or over sampling, ...https://www.cdc.gov/niosh/nioshtic-2/00026786.html
NIOSHTIC-2 Publications Search - 00045608 - Criteria for a recommended standard... occupational exposure to cotton dust.
Criteria and recommended standards for cotton dust exposure are reported, as developed by the National Institute for ... The basis for the recommended environmental standard on cotton dust is presented and work practices for protection are ... Criteria and recommended standards for cotton dust exposure are reported, as developed by the National Institute for ... Seven review committees are outlined that were established to make recommendations regarding a cotton dust standard. The ...https://www.cdc.gov/niosh/nioshtic-2/00045608.html
NIOSHTIC-2 Publications Search - 00172990 - Surface tension effects of cotton dust.
... films were measured in the presence and absence of known concentrations of the cotton dust using a Wilhelmy balance. Surface ... The effect of cotton dust on the surface tension of the surfactant dipalmitoyl-lecithin was assessed. The surface tension of ... The effects of the cotton dusts on hysteresis were modified by solvent extraction. Extraction of the dust with either water, ... The effect of cotton dust on the surface tension of the surfactant dipalmitoyl-lecithin was assessed. The surface tension of ...https://www.cdc.gov/niosh/nioshtic-2/00172990.html
NIOSHTIC-2 Publications Search - 10002034 - Three Bureau of Mines Optical Dust Probes.
Each of the probes measures dust cloud concentrations by the attenuation of light. The first is a single-path-length probe, the ... This report describes three types of optical dust probes that have been designed, built, and tested by the Bureau of Mines. ... Each of the probes measures dust cloud concentrations by the attenuation of light. The first is a single-path-length probe, the ... This report describes three types of optical dust probes that have been designed, built, and tested by the Bureau of Mines. ...https://www.cdc.gov/niosh/nioshtic-2/10002034.html
NIOSHTIC-2 Publications Search - 10000065 - Dynamic Particle Size Measurement of Coal Dust.
This research evaluated methods and techniques by which the size distribution and concentration of mining-related dusts could ... Another aspect was the calibration and evaluation of respirable dust monitors. The results of the evaluation showed that the ... This research evaluated methods and techniques by which the size distribution and concentration of mining-related dusts could ... instruments were within +/-25 pct of the true mass concentration up to about 15 mg/m, if the dust particles were in a size ...https://www.cdc.gov/niosh/nioshtic-2/10000065.html
NIOSHTIC-2 Publications Search - 20023266 - Continuous miner and roof bolter dust control.
In relation to dust, there are three categories of continuous miner faces depending on the type of ventilation and whether or ... not a machine-mounted dust scrubber is used. These are 1. Mining machines with dust scrubbers used with blowing face vent ... This chapter explains how to control dust at continuous miner sections in coal mines where the main dust sources are continuous ... Dust-control; Dust-control-equipment; Underground-mining; Airborne-dusts; Ventilation; Sprays; Dust-collection; Dust-collectors ...https://www.cdc.gov/niosh/nioshtic-2/20023266.html
NIOSHTIC-2 Publications Search - 20036366 - Controlling respirable silica dust at surface mines.
... silica dust') can cause silicosis, a serious and potentially fatal lung disease. Mining continues to have some of the highest ... Overexposure to airborne respirable crystalline silica dust (referred to here as ' ... controlling dust on unpaved haulage roads, and controlling dust at the primary hopper dump. Many surface mine dust control ... Dust-sampling; Standards; Occupational-exposure; Dust-control; Control-methods; Engineering-controls; Dust-collection; Control- ...https://www.cdc.gov/niosh/nioshtic-2/20036366.html
NIOSHTIC-2 Publications Search - 20024348 - Characterization of lipopolysaccharides present in settled house dust.
To characterize the 3-OHFAs in house dust (HD), we used gas chromatography-mass spectrometry to assay 190 HD samples. Dust from ... Microbiology; Dust-analysis; Dust-particles; Dust-sampling; Endotoxins; Allergens; Bacterial-dusts; Biological-effects; ... To characterize the 3-OHFAs in house dust (HD), we used gas chromatography-mass spectrometry to assay 190 HD samples. Dust from ... Kitchen dust contained the highest concentrations of 3-OH C(10:0), the highest endotoxin activities, and the highest specific ...https://www.cdc.gov/niosh/nioshtic-2/20024348.html
NIOSHTIC-2 Publications Search - 20030800 - Organic dust exposures from work in dairy barns.
Environmental analytes included airborne dusts (total, inhalable inlet, and respirable), particle size distributions, ... in central Wisconsin to characterize exposures to organic dusts and dust constituents from routine barn work. ... Microorganisms; Organic-dusts; Respirable-dust; Respiratory-system-disorders; Respiratory-irritants; Airborne-dusts; Airborne- ... There were significant correlations between the concentrations of organic dusts and certain dust constituents, although in most ...https://www.cdc.gov/niosh/nioshtic-2/20030800.html
NIOSHTIC-2 Publications Search - 20031119 - Coal dust particle size survey of U.S. mines.
The size of the coal dust is relevant to the amount of rock dust re ... conducted a joint survey to determine the range of coal particle sizes found in dust samples collected from intake airways of U ... The size of the coal dust is relevant to the amount of rock dust required to inert the coal dust, with more rock dust needed to ... Mining-industry; Coal-dust; Particulates; Particulate-dust; Dust-control; Dust-particles; Underground-mining; Coal-mining ...https://www.cdc.gov/niosh/nioshtic-2/20031119.html
NIOSHTIC-2 Publications Search - 00206043 - Mortality among dust-exposed Chinese mine and pottery workers.
... dusts. Information was gathered from 21 mines (ten tungsten, six copper and iron, and four tin), and eight pottery fact ... JOCMA7; NIOSH-Author; Dust-exposure; Mineral-dusts; Underground-mining; Mine-workers; Cancer-rates; Risk-factors; Respiratory- ... Pulmonary heart disease and noncancerous respiratory disease rates rose in proportion to dust exposure. Cancer mortality was ... dusts. Information was gathered from 21 mines (ten tungsten, six copper and iron, and four tin), and eight pottery factories. A ...https://www.cdc.gov/niosh/nioshtic-2/00206043.html
NIOSHTIC-2 Publications Search - 20022682 - Laboratory evaluation of pressure differential-based respirable dust detector tube.
A new type of respirable dust sampler was developed and compared side-by-side to personal gravimetric samplers in the ... Assessment of exposure to occupational dusts is a first step in reducing exposures to harmful dust concentrations. ... Six different coal dusts were aerosolized in a laboratory dust chamber and a total of 119 triplicate observations were obtained ... Assessment of exposure to occupational dusts is a first step in reducing exposures to harmful dust concentrations. A new type ...https://www.cdc.gov/niosh/nioshtic-2/20022682.html
NIOSHTIC-2 Publications Search - 10011159 - Automation to control silica dust during the pallett loading process.
... dust exposures in automated pallet loading processes. The first study involved a Bureau-designed dust control system using a ... The unit was shown to reduce workers' dust exposures by 76 pct during pallet loading at a ground silica operation. A hydraulic ... The unit was shown to reduce workers' dust exposures by 76 pct during pallet loading at a ground silica operation. A hydraulic ... Two recent U.S. Bureau of Mines studies evaluated workers' dust exposures in automated pallet loading processes. The first ...https://www.cdc.gov/niosh/nioshtic-2/10011159.html
NIOSHTIC-2 Publications Search - 00142503 - Does coal mine dust present a risk for lung cancer. A case-control study of U.S....
A 1 to 1 matched case analysis, matching age at death, was employed to examine the lung cancer risk of coal mine dust exposure ... The effect of coal dust exposure on lung cancer risk was investigated in coal miners. Two case/comparison studies were ... Extensive coal mine dust exposure from underground mining for 25 or more years gave an odds ratio of 0.89 for risk of lung ... Does coal mine dust present a risk for lung cancer. A case-control study of U.S. coal miners.. ...https://www.cdc.gov/niosh/nioshtic-2/00142503.html
NIOSHTIC-2 Publications Search - 00222929 - Dust and flour aeroallergen exposure in flour mills and bakeries.
... measurements were taken of personal exposure to total dust and flour aeroallergen in several British flour mills and bakeries. ... Dusts were lowest in the bread wrapping and dispatch areas. Of the 495 dust samples, 488 were analyzed for flour aeroallergen. ... Bakery-workers; Plant-dusts; Allergic-reactions; Airborne-dusts; Respiratory-system-disorders; Milling-industry; Skin-exposure ... Total dust measurements approximately followed a log normal distribution with 83.3% of the samples below 5mg/m3 and 6.5% above ...https://www.cdc.gov/niosh/nioshtic-2/00222929.html
NIOSHTIC-2 Publications Search - 20024504 - Quantification of historical dust exposures in the diatomaceous earth industry.
Quantitative estimates of dust exposure in a diatomaceous earth (DE) mining and milling operation have been derived based on ... Pulmonary-system-disorders; Silica-dusts; Occupational-exposure; Lung-cancer; Organic-dusts; Dust-exposure; Dust-particles; ... Quantitative estimates of dust exposure in a diatomaceous earth (DE) mining and milling operation have been derived based on ... The average estimated respirable dust concentrations for 135 jobs were 3.55 (+/-1.25), 1.37 (+/-0.48), 0.47 (+/-0.16) and 0.29 ...https://www.cdc.gov/niosh/nioshtic-2/20024504.html
NIOSHTIC-2 Publications Search - 00198787 - Study of Fibrogenic Effect of Vermiculite Dust on Rat Lung.
... dust. Quartz was administered as a positive control. Selected rats were killed 1, 3, 6, 9, or 12 months later and the lungs and ... In-vivo-studies; Laboratory-animals; Lung-fibrosis; Mineral-dusts; Silicates; Dust-exposure; Lung-tissue; Lymph-nodes; ... The authors conclude that vermiculite dust causes slight fibrogenic changes in rats. The changes are less severe and progress ... dust. Quartz was administered as a positive control. Selected rats were killed 1, 3, 6, 9, or 12 months later and the lungs and ...https://www.cdc.gov/niosh/nioshtic-2/00198787.html
NIOSHTIC-2 Publications Search - 00185498 - Mechanism of airflow interruption in guinea pigs exposed to cotton dust.
Male guinea-pigs were exposed to cotton dust aerosols at 35mg/m3 for a 6 hour exposure period. Most commonly the interruption ... investigate the interruption of airflow in the breathing pattern of guinea-pigs exposed to a high concentration of cotton dust ... Cotton-dust; Laboratory-animals; Pulmonary-system-disorders; Pulmonary-function; Airborne-dusts; Dust-inhalation; Lung-function ... Cotton dust: proceedings of the Twelfth Cotton Dust Research Conference, beltwide cotton research conferences, January 6-7, ...https://www.cdc.gov/niosh/nioshtic-2/00185498.html
NIOSHTIC-2 Publications Search - 00233930 - Assessment of airborne dust generated from small truck-mounted rock drills.
Initial dust source surveys and the assessment of dust control enhancements for small mobile rock drills were presen ... Most of the drills were truck mounted and used Rotoclone dry dust collection systems. ... Recently the United States Bureau of Mines dust research program studied small surface mine drills to assess their dust ... generation hazards and the effect of dust control technologies implemented. ...https://www.cdc.gov/niosh/nioshtic-2/00233930.html
NIOSHTIC-2 Publications Search - 00198786 - Problems of Labour Health on Preventing Dust Hazard in Township Industries.
The results indicated that occupational dust exposures in t ... Dust related occupational health problems in small rural ... Industrial-hygiene; Dust-exposure; Mineral-dusts; Occupational-exposure; Sociological-factors; Dust-suppression; Control- ... Dust related occupational health problems in small rural industries in the People's Republic of China (PRC) were discussed. ... The results indicated that occupational dust exposures in the facilities was very high and that exposed workers had a high ...https://www.cdc.gov/niosh/nioshtic-2/00198786.html
NIOSHTIC-2 Publications Search - 20041873 - Development of a canopy air curtain to reduce roof bolters dust exposure.
When performing roof bolting operations, roof bolter operators may experience exposure to high levels of respirable dust during ... conducted a study to determine the effectiveness of a filtered air delivery system to reduce respirable dust exposure of roof ... Dust-exposure; Dust-control-equipment; Dust-control; Dust-inhalation; Dust-measurement; Dusts; Air-filters; Air-flow; Air- ... Test results of the system in both laboratory and field studies show reductions in operator exposure to respirable dust when ...https://www.cdc.gov/niosh/nioshtic-2/20041873.html
CDC - Mining Project - Certification Test - NIOSH
Caking adversely affects the dispersibility of the rock dust rendering the rock dust ineffective to inert coal dust. The use of ... Mitigating Coal Dust Explosions in Modern Underground Coal Mines * Observations of Post-Explosion Dust Samples From an ... Examine the application of anti-caking treated rock dust in coal mines and its impact (if any) on the airborne respirable dust ... 30 CFR 75.402 mandates that underground coal mines are to be rock dusted in order to prevent coal dust explosion propagations. ...https://www.cdc.gov/niosh/mining/researchprogram/projects/project_RockDust.html
NIOSHTIC-2 Publications Search - 00216519 - Organic dust exposures from compost handling: Case presentation and respiratory...
Bacterial-dusts; Author Keywords: organic dust toxic syndrome; hypersensitivity pneumonitis; wood chips; compost handling; ... The dusts contained respirable endotoxin concentrations of 636 to 16,300 endotoxin units per cubic meter (m3). Fungal spore ... HP and ODTS may represent just a portion of a wide spectrum of responses to inhalation of complex dusts. ... Organic dust exposures from compost handling: Case presentation and respiratory exposure assessment.. ...https://www.cdc.gov/niosh/nioshtic-2/00216519.html
NIOSHTIC-2 Publications Search - 00193982 - NIOSH Testimony on Cotton Dust Standards by R. A. Nelson, August, 1983.
Chronic conditions associated with cotton dust inhalation, including byssinosis, contribute to a large extent to the total ... This testimony concerned the work of NIOSH in the field of controlling worker exposure to cotton dust. ... NIOSH-Author; NIOSH-Testimony; Nelson-R-A; Dust-control; Pulmonary-system-disorders; Airborne-dusts; Plant-dusts; Cotton-dust; ... This testimony recommended that the Permissible Exposure Limit of 1.0mg/m3 for total raw cotton dust not be relied upon alone ...https://www.cdc.gov/niosh/nioshtic-2/00193982.html