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CDC - Mining - Coal Dust Particle Size Survey of US Mines ...

NIOSH and the Mine Safety and Health Administration (MSHA) conducted a joint survey to determine the range of coal particle sizes found in dust samples collected from intake airways of US coal mines. The last comprehensive survey of this type was performed in the 1920s.

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Coal dust particle size survey of US mines - ScienceDirect

Jul 01, 2007  This paper presents the results of a recent coal dust particle size survey to determine the range of coal particle sizes found in dust samples collected from intake airways in 50 US coal mines in MSHA's 10 bituminous Coal Mine Safety and Health Districts (see Fig. 1). (MSHA District 1 covers anthracite mines in Pennsylvania, which do not require rock dusting.)

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Coal Dust Particle Size Survey of US Mines

Coal dust particle size survey of US mines Michael J. Sapko, Kenneth L.Cashdollar ,Gregory M. Green PIIIWQ~Rksameh -toy. NUI~OM/ I~litutefw Ocmpahd Sqfciy and XcaI~h,Pittsburgh, PA, USA The National Institute for Occupationel Safety and Health (NINSH) and the Mine Safety and Ncalth Administration (MSHA) wnductod a joint ~urveyto determine the range of coal particle sizes found in dust

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Coal dust particle size survey of US mines - ScienceDirect

The National Institute for Occupational Safety and Health (NIOSH) and the Mine Safety and Health Administration (MSHA) conducted a joint survey to determine the range of coal particle sizes found in dust samples collected from intake airways of US coal mines. The last comprehensive survey of this type was performed in the 1920s.

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Coal dust particle size survey of US mines Request PDF

A particle size survey of US coal mines recently conducted by NIOSH concluded the old definition of "mine size" dust is no longer applicable or representative (Sapko et al., 2007). ...

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CiteSeerX — Coal dust particle size survey of US mines

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): wnductod a joint ~urveyto determine the range of coal particle sizes found in dust samples collected from intake airnap of US coal h.The last comprehensivesurvey of this type was p erfad in the 1920s. The size of the cod dust is dmnt to tbe amount of rwk dust required to inert the coal dust, with more rock dust

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CiteSeerX — Coal dust particle size survey of US mines

@MISC{Sapko_coaldust, author = {Michael J. Sapko and Kenneth L. Cashdollar and Gregory M. Green}, title = {Coal dust particle size survey of US mines}, year = {}} Share. OpenURL . Abstract. This article was published in an Elsevier journal. The attached copy is furnished to the author for non-commercial research and education use, including for ...

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Coal dust particle size survey of US mines - CORE

Coal dust particle size survey of US mines . By Michael J. Sapko, Kenneth L. Cashdollar and Gregory M. Green. Abstract. wnductod a joint ~urveyto determine the range of coal particle sizes found in dust samples collected from intake airnap of US coal h.The last comprehensivesurvey of this type was p erfad in the 1920s. The size of the cod dust ...

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Author's personal copy - Mine Safety and Health Administration

This paper presents the results of a recent coal dust particle size survey to determine the range of coal particle sizes found in dust samples collected from intake airways in 50 US coal mines in MSHA s 10 bituminous Coal Mine Safety and Health Districts (seeFig. 1). (MSHA District 1 covers anthracite mines in Pennsylvania, which do not

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Characteristics of Dust in Coal Mines in Central North ...

monitoring or corresponding general survey of pollution sources. Coal dust explosion is mainly affected by coal rank,79−81 particle size,82−84 specific surface area,85−87 moisture con-tent,88−90 volatile content,91−93 and the concentration.94−96 Given constant dust concentration and particle size, the

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10.1016/j.jlp.2007.04.014 DeepDyve

Jun 11, 2020  They mandate that the nation's bituminous coal mines maintain an incombustible content of at least 65% in the non-return (intake) airways and at least 80% in the return airways where the potential for accumulation of finer float coal dust is greater. The US regulation also requires an additional 1.0% incombustible by weight for each 0.1% ...

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Federal Register :: Recent Coal Dust Particle Size Surveys ...

Aug 21, 2009  Given the results of the recent coal dust particle size survey and large-scale explosion tests, NIOSH recommends a new standard of 80% TIC be required in the intake airways of bituminous coal mines. The survey results indicate that the current requirement of 80% TIC in return airways is still sufficient and appropriate.

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Coal Dust Particle Size Survey Of U. S. Mines - CORE Reader

Coal Dust Particle Size Survey Of U. S. Mines - CORE Reader

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Characteristics of Dust in Coal Mines in Central North ...

monitoring or corresponding general survey of pollution sources. Coal dust explosion is mainly affected by coal rank,79−81 particle size,82−84 specific surface area,85−87 moisture con-tent,88−90 volatile content,91−93 and the concentration.94−96 Given constant dust concentration and particle size, the

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Physical and chemical properties of respirable coal dust ...

1. Am Ind Hyg Assoc J. 1973 Jul;34(7):279-85. Physical and chemical properties of respirable coal dust from two United States mines. Corn M, Stein F, Hammad Y, Manekshaw S, Freedman R, Hartstein AM.

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Preventing Coal Dust Explosions in Underground Coal Mines

– Based on 1920s particle size survey – Based on BEM explosion tests • Mine size coal previously defined as coal dust that is – 100% minus 20 mesh (850 μm) – 20% minus 200 mesh (75 μm) • Float coal – 100% minus 200 mesh (75 μm) • Coal

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Field evaluation of the coal dust explosibility meter (CDEM)

Nagy, 1981). A recent coal dust particle size survey in ­ dicates that current mining methods generate finer par­ ticles; therefore, more inert material is required (Sapko et al., 2007). One advantage of the CDEM is that it ac­ counts for the coal particle size in its determination of explosibility. The CDEM color readout takes the various

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Coal Mine Dust Exposure Monitoring and Sampling in ...

Oct 01, 2017  dust and limestone dust are used in the industry. 5.2. Rock dusting requirements, including composition, particle size, percentage of inert content of coal mine dust, and other requirements. Minerals Act (1991) required that the material used for inertizationpurposes (of coal dust underground) should be light colored so that it will easily seen in

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Kenneth L. Cashdollar's research works National ...

Coal dust particle size survey of US mines. Article. Jul 2007; Michael J. Sapko. Kenneth L. Cashdollar. Gregory M. Green. The National Institute for

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Effect of coal mine organic aerosol on the methane/air ...

Mar 28, 2020  Sapko MJ, Cashdollar KL, Green GM (2007) Coal dust particle size survey of US mines. J Loss Prev Process Ind 20(4–6):616–620. Article Google Scholar Tan B, Liu H, Xu B, Wang T (2020) Comparative study of the explosion pressure characteristics of micro- and nano-sized coal dust and methane–coal dust mixtures in a pipe. Int J Coal Sci ...

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Rock dusting considerations in underground coal mines

Rock dusting to prevent coal dust explosions has been in widespread use in U.S. underground coal mines since the early 1900s. Underground coal mining technology has changed significantly over this same time period, becoming highly mechanized and produces finer coal dust particles which are more explosive. Despite the advances in mining technology, mine-wide dust

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NIOSH takes on coal and rock dust - MiningMonthly

The average size of the coal dust in mines measured in the 1920s survey was about 20% minus 200 mesh. Coal dust explosibility is strongly dependent on the fineness of the coal particles in a coal and rock dust mixture, with more rock dust required to inert finer size coal dust.

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: WETTING BEHAVIOR AND CONTROL OF QUARTZ AND

innovative spray system in controlling respirable coal and quartz dust generated by a continuous miner. This study designed a continuous miner spray system specific to the mine, which included: 1) characterization of coal, roof, and floor strata dust with regard to particle size distribution, quartz content, and wettability; 2) analysis of ...

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Evaluation of a 38 L Explosive Chamber for Testing Coal ...

Coal dust explosions are the deadliest disasters facing the coal mining industry. Research has been conducted globally on this topic for decades. The first explosibility tests in the United States were performed by the Bureau of Mines using a 20#x2009;L chamber. This serves as the basis for all standardized tests used for combustible dusts. The purpose of this paper is to

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Site Browser

This NIOSH report presents the results of extensive in-mine coal dust particle size surveys of dust samples collected from intake airways in 61 U.S. coal mines, representing all 10 MSHA bituminous Coal Mine Safety and Health Districts.

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Coal Dust Particle Size Survey Of U. S. Mines - CORE Reader

Coal Dust Particle Size Survey Of U. S. Mines - CORE Reader

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Characteristics of Dust in Coal Mines in Central North ...

monitoring or corresponding general survey of pollution sources. Coal dust explosion is mainly affected by coal rank,79−81 particle size,82−84 specific surface area,85−87 moisture con-tent,88−90 volatile content,91−93 and the concentration.94−96 Given constant dust concentration and particle size, the

Read More
Physical and chemical properties of respirable coal dust ...

1. Am Ind Hyg Assoc J. 1973 Jul;34(7):279-85. Physical and chemical properties of respirable coal dust from two United States mines. Corn M, Stein F, Hammad Y, Manekshaw S, Freedman R, Hartstein AM.

Read More
Preventing Coal Dust Explosions in Underground Coal Mines

– Based on 1920s particle size survey – Based on BEM explosion tests • Mine size coal previously defined as coal dust that is – 100% minus 20 mesh (850 μm) – 20% minus 200 mesh (75 μm) • Float coal – 100% minus 200 mesh (75 μm) • Coal

Read More
Coal Mine Dust Exposure Monitoring and Sampling in ...

Oct 01, 2017  dust and limestone dust are used in the industry. 5.2. Rock dusting requirements, including composition, particle size, percentage of inert content of coal mine dust, and other requirements. Minerals Act (1991) required that the material used for inertizationpurposes (of coal dust underground) should be light colored so that it will easily seen in

Read More
Kenneth L. Cashdollar's research works National ...

Coal dust particle size survey of US mines. Article. Jul 2007; Michael J. Sapko. Kenneth L. Cashdollar. Gregory M. Green. The National Institute for

Read More
Effect of coal mine organic aerosol on the methane/air ...

Mar 28, 2020  Sapko MJ, Cashdollar KL, Green GM (2007) Coal dust particle size survey of US mines. J Loss Prev Process Ind 20(4–6):616–620. Article Google Scholar Tan B, Liu H, Xu B, Wang T (2020) Comparative study of the explosion pressure characteristics of micro- and nano-sized coal dust and methane–coal dust mixtures in a pipe. Int J Coal Sci ...

Read More
(PDF) Coal dust emissions: From environmental control to ...

It stands to reason that eters related to the specific activity or to the characteristics this technique allows us to face decisively air pollution caused of the material, e.g.: particle size distribution, coal type, mois- by dusts by applying an inherent safety prevention crite- ture content, pile configuration, dumping height, as well as on rion.

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DIRECTORY OF COAL MINES IN ILLINOIS

and location of coal mining in Illinois, the Illinois State Geological Survey (ISGS) has compiled maps and directories of known coal mines. The ISGS offers maps at a scale of 1:100,000 and accompanying directories for each county in which coal mining is known to have occurred. Maps at a scale of 1:24,000

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Impacts of coal dust from an active mine on the spectral ...

The SP2 was employed to quantify sub‐2 µm refractory carbon concentrations and products of the coal dust and particle size distributions around the mine. The refractive index of coal dust has been previously reported as 1.54–0.5 i [ Liu et al ., 1974 ] and 1.57–0.6 i for soot [ Dalzell and Sarofim , 1969 ].

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Application of bacteria for coal dust stabilization ...

In the coal mines, the conducted activities are always associated with technical and natural hazards. One of the most dangerous sources of these hazards is the dispersed coal dust. Today, considering the successful application of bacteria in the engineering industries, the present study aimed at stabilizing and preventing coal dust entering the air using biological agents.

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Coal dust explosibility and particle-size distribution ...

@article{osti_7170872, title = {Coal dust explosibility and particle-size distribution. Report of investigations/1994}, author = {Chaiken, R F}, abstractNote = {An absorption/desorption model of particle reactivity was employed to describe the observed relationship between two apparently diverse phenomena which have been the subject of considerable study at the U.S. Bureau of Mines

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State of West Virginia

Office of Miners Health Safety and Training Coal -Dust Practices Survey Program On March 6, 2012 the West Virginia Legislature modified the W.Va. Code §22A-2-24 standards for the application of rock -dust in underground coal mines.

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