Analysis on the Development Status of Coal Mine Dust ...Apr 20, 2021 · In recent years, with the increasing level of mechanization, automation, and intelligence in mine mining, dust pollution in the working environment of coal mines has become increasingly serious. Coal mine dust prevention is an important work related to the life, health, and production safety of miners, and it is also one of the technical problems of mine safety in production.
Dust Sampling Methods Employed in the Witwatersrand Gold ...The instruments examined were the thermal precipitator and the konimeter. In the former.(see Green Watseon, Med. Res. Council Spec. Rep. No. 199, 1935 [this Bulletin, 1935, v. 10, 291]) the air to be tested is aspirated over a hot wire, and since no dust particles can penetrate the dustfree zone which is produced in the immediate neighbourhood of the hot wire, they are deposited on glass...
Occupational Health | View ArticleThe sampler followed a route to, and a crisscross through, the zone, keeping on the move, more or less continuously, without following the same route twice. Wherever people were encountered, air was sampled for dust counts, using a konimeter, at the rate of roughly one konimeter spot per two persons, whether they were at work, resting or walking.
NIOSHTIC2 Publiions SearchThe German experience in dealing with the health hazard of respirable dust in underground mines is reported from firsthand observation in this Bureau of Mines paper. The report covers(1) the control of dust by water infusion, water spraying, and ventilation. (2) The sampling devices (tyndalloscope, konimeter, and bati) and methods used to determine the dust concentrations in mines.
Crosssectional silica exposure measurements at two ...Jun 01, 2008 · Reported dust exposure measurements at the two mines were of a crosssectional design. At each mine, bulk and personal respirable dust samples were collected at scheduled areas. Scheduled areas are production areas of the mine where mining regulations of the Zambian mining regulatory authorities apply.
eCFR :: 30 CFR Part 74 Coal Mine Dust Sampling DevicesThe power source of the CPDM shall have sufficient capacity to enable continuous sampling for 12 hours in a coal mine dust atmosphere of up to mg/m 3. If the CPDM uses a rechargeable battery, the battery charger shall be operated from a 110 (VAC) (nominal), 60 Hz power line.
Federal Register :: Coal Mine Dust Sampling DevicesApr 06, 2010 · Since 1970, coal mine operators and MSHA have used approved coal mine dust personal sampler units (CMDPSUs) to determine the concentration of respirable dust in coal mine atmospheres. These devices sample the mine atmosphere by drawing mine air through a filter cassette that collects respirable coal mine dust.
eCFR :: 30 CFR Part 74 Coal Mine Dust Sampling DevicesTests of coal mine dust personal sampler units. § Quality control. Subpart C: Requirements for Continuous Personal Dust Monitors: – § Design and construction requirements. § Measurement, accuracy, and reliability requirements. § Quality assurance.
(PDF) Assessment of exposure in epidemiological studies ...For diatomaceous earth industry could therefore be also epidemiological purposes, not the quartz content of the Journal of Exposure Science and Environmental Epidemiology (2008) 18(5) 453 Dahmann et al. Silica dust assessment in epidemiological studies parent material but of the dust samples is the relevant Sampling of Respirable Dust information.
Verifiion of Underground Coal Mine Operators' Dust ...Mar 06, 2003 · The proposed rule requires each underground operator to verify, through sampling, that the dust control parameters specified in a mine ventilation plan are effective in controlling the concentration of respirable coal mine dust and quartz dust at or below the verifiion limits of mg/m 3 and 100 μg/m 3 respectively. For a sample to be ...
IntroductionReported dust exposure measurements at the two mines were of a crosssectional design. At each mine, bulk and personal respirable dust samples were collected at scheduled areas. Scheduled areas are production areas of the mine where mining regulations of the Zambian mining .
Dust MonitoringThis means any person carrying out respirable dust sampling at a coal mine in accordance with AS 2985 must have the recognised competencies as determined by the Coal Mining Safety and Health Advisory Committee. Due to the long latency of many respiratory diseases it is essential that workers' exposure to dust particles be minimised ...
Zeiss konimeterA portable dustsampling instrument. See also: konimeter Source: Dictionary of Mining, Mineral, and Related Terms
An improved type of konimeter | Journal of the Southern ...Witwatersrand Konimeter Disclosure The authors confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed.
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MSHA News Release: MSHA issues final rule on lowering ...ARLINGTON, Va. — The Department of Labor's Mine Safety and Health Administration today announced the release of a final rule to lower miners' exposure to respirable coal mine dust in all underground and surface coal mines. The final rule continues the department's efforts through its End Black Lung — Act Now! initiative to end black lung disease, a debilitating illness that continues ...