2 edition of Ash and quartz content of respirable airborne dust in a number of British coal mines found in the catalog.
Ash and quartz content of respirable airborne dust in a number of British coal mines
B. A. Maguire
by Safety in Mines Research, Dept. of Trade and Industry, Administration and Central Laboratories] in [Sheffield
Written in English
|Statement||[by] B.A. Maguire and D. Barker.|
|Series||SMRE research report -- 278., Research report (Safety in Mines Research Establishment (Great Britain)) -- no. 278.|
|The Physical Object|
|Number of Pages||16|
The Institute of Occupational Medicine (IOM) was founded in by the National Coal Board (NCB) as an independent charity in the UK and retains this charitable purpose and status today. The "Institute" has a subsidiary, IOM Consulting Limited, which became fully independent in and now celebrates its 25th year within the IOM Group as an independent consultancy and also the commercial. Respirable coal dust can cause coal workers' pneumoconiosis (also known as miners lung or black lung disease), respirable In coal mining, the extraction, crushing, and transport of coal can generate significant amounts of airborne respirable ( Ignited methane gas is a common source of explosions in coal mines, which in turn can initiate more extensive coal dust.
Pneumoconiosis is the general term for a class of interstitial lung diseases where inhalation of dust has caused interstitial coniosis often causes restrictive impairment,  although diagnosable pneumoconiosis can occur without measurable impairment of lung function. Depending on extent and severity, it may cause death within months or years, or it may never produce symptoms. Mine Safety and Health Administration 12th St S Suite Arlington, VA TTY
The U.S. Department of Energy's Office of Scientific and Technical Information. The follow-up studies at the same mines (in –––––, and –) have shown that the overall prevalence of CWP decreased in the United States because of the lowered dust levels, but the regional difference persisted with a greater risk in eastern coal miners (PA and WV) than in western coal miners (UT and CO.
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1. Introduction. Coal Workers' Pneumoconiosis (CWP) is a lung disease that results from breathing in coal dust over a long period of time. Several factors increase a person's risk of developing pneumoconiosis such as the concentration of respirable coal dust, coal dust particle size and its composition, free silica content (quartz minerals), the duration of exposure, age, work environment Cited by: The relationship is discussed between the mass concentration and the number concentration of coalmine dusts of varying ash content.
Experimental work in different coal mines had shown that the mass-number relationship varied systematically with the rank of coal mined. "Calculation suggests that this effect was probably due to the higher ash content of airborne dust in low-rank by: 2.
In only two faces was the quartz content greater than 7 %. The quartz contents of the dust from the pneumatic stowing sites were low (2 % and 3 %) although the corresponding ash contents were high (60% and 70%).
In much of this work with the MRE sampler, instruments were used in Author: R.J. Hamilton, G.D. Morgan, W.H. Walton. Pneumoconiosis and quartz content of respirable dusts in the coal mines in Zonguldak, Turkey Article (PDF Available) in International Journal of Coal Geology September with.
were below the applicable respirable coal mine dust exposure limit exceeded µg/m. quartz. In a second situation, % (/20,) of samples with 5% or less quartz content in the airborne respirable dust exceeded µg/m.
quartz. In these two situations, the samples exceeding µg/m. quartz were. Assessment of respirable dust, personal exposures of miners and free silica contents in dust were undertaken to find out the associated risk of coal workers' pneumoconiosis in 9 coal mines of.
in mines and silica content in the personal dust, thermal conditions and air ventilation to furnish an overall conditions of Indian coal mines.
Methods Environmental monitoring in 9 different types of conventional and mechanied coal mines in Eastern India was undertaken for assessment of respirable dust during – Knowledge of the composition of respirable airborne dust in British coal-mines is scanty, mainly because instruments which will collect such dust in amounts sufficient for analysis and uncontaminated by coarser dust have only recently become available.
The present report gives the ash contents and quartz contents of many samples of airborne dust collected by means of various instruments, but. Dodgson J, Hadden GG, Jones CO, Walton WH.
Characteristics of the airborne dust in British coal mines. Inhaled Part. ; – Dodgson J, Whittaker W. The determination of quartz in respirable dust samples by infrared spectrophotometry--I: The potassium bromide disc method. Ann Occup Hyg. Dec; 16 (4)– Appendix G Mandatory Airborne Dust Standards for U.S.
Underground Coal Mines. The laws and regulations that are aimed at protecting the miners from the health hazards associated with exposure to airborne respirable coal mine dust (RCMD) also specify monitoring technology and sampling protocols. The quartz content of the respirable dust samples in Period 1 (%) was significantly higher than in Period 2 (%) (P = ).
Exposure based on job teams showed that workers in the development team had the highest exposure to respirable dust and quartz (GM and mg m −3). Presentation from the Chief of Health for Coal Mine Safety and Health, MSHA to Committee on the Study of the Control of Respirable Coal Mine Dust Exposure in Underground Mines, Morgantown, WV, J Miller, B.
G., and L. MacCalman. Cause-specific mortality in British coal workers and exposure to respirable dust and quartz. This document may not reflect OSHA's respirable silica rule published on Ma For more information on the new rule, see OSHA's Final Rule on Respirable Crystalline Silica Page.
Crystalline Silica Quartz and Cristobalite. Method number: ID with high ash coal fractions which contained from 37 to 66% coal and aboLit 1 to 3% quartz, the rest being kaolin and mica, grade 1 fibrosis was also produced in days ; and the reticulin was. In the Federal Coal Mine Health and Safety Act ofcoal workers pneumoconiosis (CWP) was defined as "a chronic dust disease of the lung arising out of employment in an underground coal mine." Diagnosis of CWP is generally based on chest x-ray findings and a patient's history of working in coal mines, usually for 10 or more years.
Two methods were collaboratively tested in 15 laboratories: XRD Method--PCAMFree Silica (Quartz, Cristobalite, Tridymite) in a Airborne Dust, and IR Method--Method for Infrared Determination of Quartz in Respirable Coal mine Dust. Samples for the tests were collected from aerosols prepared in a specially adapted laboratory generation system.
There is no separate standard for respirable silica; rather, where the respirable coal mine dust contains more than five percent quartz, the respirable coal mine dust standard is computed by dividing the percentage of quartz into the number 10 (30 CFR (underground coal mines), § (surface coal mines and surface areas of.
Quartz concentrations (Hnizdo and Sluis-Cremer, ) based on 30% quartz content of acid-treated respirable dust (mg/m 3). Quartz concentrations reported by Hnizdo and Sluis-Cremer adjusted to 54% quartz content of acid-treated respirable dust (column  × ) (mg/m 3).
• 30 mppcf or 10 mg/m3 of total dust quartz or 5 mg/m3 of respirable dust. Dust, not otherwise specified pulverised fuel ash, limestone, gypsum, graphite, aluminium oxide, titanium dioxide, coal dust, other mineral dusts with low crystalline silica content, etc.
Past exposure to dust • In British coal mines in the s dust. () used historical data (n = ) and current measurements (n = ) to characterize exposure to respirable coal mine dust in three South African coal mines.
Jobs were classified into the following exposure zones: face (directly involved with coal extraction), underground backbye (away from the coal mining face), and work on the surface. Coal workers' pneumoconiosis (CWP), also known as black lung disease or black lung, is caused by long-term exposure to coal is common in coal miners and others who work with coal.
It is similar to both silicosis from inhaling silica dust and asbestos dust. Inhaled coal dust progressively builds up in the lungs and leads to inflammation, fibrosis, and in worse cases, necrosis.Nuisance Dust → PNOC → PNOS • Nuisance dust introduced 15 mg/m3 or 50 mppcf, whichever less • Nuisance Particulate Appendix added • 10 mg/m3, total dust, or 30 mppcf • 5 mg/m3, respirable added • Appendix dropped, substances listed • Changed to Particles Not Otherwise Classified (PNOC).This method takes advantage of the facts that DPM in coal mines is generally less than µm in size and that other mineral dust collected in a respirable dust sample is generally greater than µm in size.
Figure 2 shows a schematic of a sampling device that can be used to collect the submicrometer fraction of the respirable dust aerosol.