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The Rock Dust Remedy For Coal Mine Explosions
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Book Synopsis The Rock Dust Remedy for Coal Mine Explosions by : Harry Phythyon
Download or read book The Rock Dust Remedy for Coal Mine Explosions written by Harry Phythyon and published by . This book was released on 1926 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of Rock Dust and Water Under the Federal Mine Safety Code in Limiting Coal-dust Explosions by : John Joseph Vincent Forbes
Download or read book Use of Rock Dust and Water Under the Federal Mine Safety Code in Limiting Coal-dust Explosions written by John Joseph Vincent Forbes and published by . This book was released on 1947 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Widespread explosions in coal mines can be prevented if rock dust of suitable size and composition is applied effectively within two or three cuts of face; distance between end of rock dusting and face should never exceed 80 feet. Water should be used on cutter bar of mining machines, and coal piles and should not only be wetted after blasting but kept wet during landing.
Book Synopsis Recent Rock-dusting Experiments for Arresting Coal-mine Explosions by :
Download or read book Recent Rock-dusting Experiments for Arresting Coal-mine Explosions written by and published by . This book was released on 1950 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rock-dust Does Stop Or Limit Mine Explosions by : Daniel Harrington
Download or read book Rock-dust Does Stop Or Limit Mine Explosions written by Daniel Harrington and published by . This book was released on 1932 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effectiveness of Different-size Rock Dusts in Preventing Coal-dust Explosions in Mines by : George Samuel Rice
Download or read book The Effectiveness of Different-size Rock Dusts in Preventing Coal-dust Explosions in Mines written by George Samuel Rice and published by . This book was released on 1930 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis What a Miner Can Do to Prevent Explosions of Gas and of Coal Dust by : George Samuel Rice
Download or read book What a Miner Can Do to Prevent Explosions of Gas and of Coal Dust written by George Samuel Rice and published by . This book was released on 1916 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stone Dusting Or Rock Dusting to Prevent Coal-dust Explosions, as Practiced in Great Britain and France by : George Samuel Rice
Download or read book Stone Dusting Or Rock Dusting to Prevent Coal-dust Explosions, as Practiced in Great Britain and France written by George Samuel Rice and published by . This book was released on 1924 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tests in the Experimental Coal Mine Determine Requirements for Preventing Propagation of Coal-dust Explosions in Rooms by : Henry C. Howarth
Download or read book Tests in the Experimental Coal Mine Determine Requirements for Preventing Propagation of Coal-dust Explosions in Rooms written by Henry C. Howarth and published by . This book was released on 1948 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tentative Specifications for Rock Dusting to Prevent Coal-dust Explosions in Mines by : George Samuel Rice
Download or read book Tentative Specifications for Rock Dusting to Prevent Coal-dust Explosions in Mines written by George Samuel Rice and published by . This book was released on 1924 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rock Dusting and Sampling Including Wet Rock Dusting at the Bureau of Mines Experimental Coal Mine by : Irving Hartmann
Download or read book Rock Dusting and Sampling Including Wet Rock Dusting at the Bureau of Mines Experimental Coal Mine written by Irving Hartmann and published by . This book was released on 1956 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tests of Salt as a Substitute for Rock Dust in Prevention of Coal-dust Explosions in Mines by : Harold Putnam Greenwald
Download or read book Tests of Salt as a Substitute for Rock Dust in Prevention of Coal-dust Explosions in Mines written by Harold Putnam Greenwald and published by . This book was released on 1940 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies on the Development and Control of Coal-dust Explosions in Mines by : Irving Hartmann
Download or read book Studies on the Development and Control of Coal-dust Explosions in Mines written by Irving Hartmann and published by . This book was released on 1957 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods of Rock-dusting American Coal Mines by : J. J. Forbes
Download or read book Methods of Rock-dusting American Coal Mines written by J. J. Forbes and published by . This book was released on 1939 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recommendations for a New Rock Dusting Standard to Prevent Coal Dust Explosions in Intake Airways by : Kenneth L. Cashdollar
Download or read book Recommendations for a New Rock Dusting Standard to Prevent Coal Dust Explosions in Intake Airways written by Kenneth L. Cashdollar and published by . This book was released on 2010 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The workings of a bituminous coal mine produce explosive coal dust for which adding rock dust can reduce the potential for explosions. Accordingly, guidelines have been established by the Mine Safety and Health Administration (MSHA) about the relative proportion of rock dust that must be present in a mine's intake and return airways. Current MSHA regulations require that intake airways contain at least 65% incombustible content and return airways contain at least 80% incombustible content. The higher limit for return airways was set in large part because finer coal dust tends to collect in these airways. Based on extensive in-mine coal dust particle size surveys and large-scale explosion tests, the National Institute for Occupational Safety and Health (NIOSH) recommends a new standard of 80% total incombustible content (TIC) be required in the intake airways of bituminous coal mines in the absence of methane. MSHA inspectors routinely monitor rock dust inerting efforts by collecting dust samples and measuring the percentage of TIC, which includes measurements of the moisture in the samples, the ash in the coal, and the rock dust. These regulations were based on two important findings: a survey of coal dust particle size that was performed in the 1920s, and large-scale explosion tests conducted in the U.S. Bureau of Mines' Bruceton Experimental Mine (BEM) using dust particles of that survey's size range to determine the amount of inerting material required to prevent explosion propagation. Mining technology and practices have changed considerably since the 1920s, when the original coal dust particle survey was performed. Also, it has been conclusively shown that as the size of coal dust particles decreases, the explosion hazard increases. Given these factors, NIOSH and MSHA conducted a joint survey to determine the range of coal particle sizes found in dust samples collected from intake and return airways of U.S. coal mines. Results from this survey show that the coal dust found in mines today is much finer than in mines of the 1920s. This increase in fine dust is presumably due to the increase in mechanization. In light of this recent comprehensive dust survey, NIOSH conducted additional large-scale explosion tests at the Lake Lynn Experimental Mine (LLEM) to determine the degree of rock dusting necessary to abate explosions. The tests used Pittsburgh seam coal dust blended as 38% minus 200 mesh and referred to as medium-sized dust. This medium-sized blend was used to represent the average of the finest coal particle size collected from the recent dust survey. Explosion tests indicate that medium-sized coal dust required 76.4% TIC to prevent explosion propagation. Even the coarse coal dust (20% minus 200 mesh or 75 microm), representative of samples obtained from mines in the 1920s, required approximately 70% TIC to be rendered inert in the larger LLEM, a level higher than the current regulation of 65% TIC. Given the results of the extensive in-mine coal dust particle size surveys and large-scale explosion tests, NIOSH recommends a new standard of 80% TIC be required in the intake airways of bituminous coal mines in the absence of methane. The survey results indicate that in some cases there are no substantial differences between the coal dust particle size distributions in return and intake air courses in today's coal mines. The survey results indicate that the current requirement of 80% TIC in return airways is still appropriate in the absence of background methane." - NIOSHTIC-2
Book Synopsis Recommendations for a New Rock Dusting Standard to Prevent Coal Dust Explosions in Intake Airways by : Department of Health and Human Services
Download or read book Recommendations for a New Rock Dusting Standard to Prevent Coal Dust Explosions in Intake Airways written by Department of Health and Human Services and published by CreateSpace. This book was released on 2013-10 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: The workings of a bituminous coal mine produce explosive coal dust for which adding rock dust can reduce the potential for explosions. Accordingly, guidelines have been established by the Mine Safety and Health Administration (MSHA) about the relative proportion of rock dust that must be present in a mine's intake and return airways. Current MSHA regulations require that intake airways contain at least 65% incombustible content and return airways contain at least 80% incombustible content. The higher limit for return airways was set in large part because finer coal dust tends to collect in these airways. Based on extensive in-mine coal dust particle size surveys and large-scale explosion tests, the National Institute for Occupational Safety and Health (NIOSH) recommends a new standard of 80% total incombustible content (TIC) be required in the intake airways of bituminous coal mines in the absence of methane. MSHA inspectors routinely monitor rock dust inerting efforts by collecting dust samples and measuring the percentage of TIC, which includes measurements of the moisture in the samples, the ash in the coal, and the rock dust. These regulations were based on two important findings: a survey of coal dust particle size that was performed in the 1920s, and large-scale explosion tests conducted in the U.S. Bureau of Mines' Bruceton Experimental Mine (BEM) using dust particles of that survey's size range to determine the amount of inerting material required to prevent explosion propagation. Mining technology and practices have changed considerably since the 1920s, when the original coal dust particle survey was performed. Also, it has been conclusively shown that as the size of coal dust particles decreases, the explosion hazard increases. Given these factors, NIOSH and MSHA conducted a joint survey to determine the range of coal particle sizes found in dust samples collected from intake and return airways of U.S. coal mines. Results from this survey show that the coal dust found in mines today is much finer than in mines of the 1920s. This increase in fine dust is presumably due to the increase in mechanization. In light of this recent comprehensive dust survey, NIOSH conducted additional large-scale explosion tests at the Lake Lynn Experimental Mine (LLEM) to determine the degree of rock dusting necessary to abate explosions. The tests used Pittsburgh seam coal dust blended as 38% minus 200 mesh and referred to as medium-sized dust. This medium-sized blend was used to represent the average of the finest coal particle size collected from the recent dust survey. Explosion tests indicate that medium-sized coal dust required 76.4% TIC to prevent explosion propagation. Even the coarse coal dust (20% minus 200 mesh or 75 µm), representative of samples obtained from mines in the 1920s, r equired approximately 70% TIC to be rendered inert in the larger LLEM, a level higher than the current regulation of 65% TIC. Given the results of the extensive in-mine coal dust particle size surveys and large-scale explosion tests, NIOSH recommends a new standard of 80% TIC be required in the intake airways of bituminous coal mines in the absence of methane. The survey results indicate that in some cases there are no substantial differences between the coal dust particle size distributions in return and intake air courses in today's coal mines. The survey results indicate that the current requirement of 80% TIC in return airways is still appropriate in the absence of background methane.
Book Synopsis Recommendations for a New Rock Dusting Standard to Prevent Coal Dust Explosions in Intake Airways by : Kenneth L. Cashdollar
Download or read book Recommendations for a New Rock Dusting Standard to Prevent Coal Dust Explosions in Intake Airways written by Kenneth L. Cashdollar and published by . This book was released on 2010 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The workings of a bituminous coal mine produce explosive coal dust for which adding rock dust can reduce the potential for explosions. Accordingly, guidelines have been established by the Mine Safety and Health Administration (MSHA) about the relative proportion of rock dust that must be present in a mine's intake and return airways. Current MSHA regulations require that intake airways contain at least 65% incombustible content and return airways contain at least 80% incombustible content. The higher limit for return airways was set in large part because finer coal dust tends to collect in these airways. Based on extensive in-mine coal dust particle size surveys and large-scale explosion tests, the National Institute for Occupational Safety and Health (NIOSH) recommends a new standard of 80% total incombustible content (TIC) be required in the intake airways of bituminous coal mines in the absence of methane. MSHA inspectors routinely monitor rock dust inerting efforts by collecting dust samples and measuring the percentage of TIC, which includes measurements of the moisture in the samples, the ash in the coal, and the rock dust. These regulations were based on two important findings: a survey of coal dust particle size that was performed in the 1920s, and large-scale explosion tests conducted in the U.S. Bureau of Mines' Bruceton Experimental Mine (BEM) using dust particles of that survey's size range to determine the amount of inerting material required to prevent explosion propagation. Mining technology and practices have changed considerably since the 1920s, when the original coal dust particle survey was performed. Also, it has been conclusively shown that as the size of coal dust particles decreases, the explosion hazard increases. Given these factors, NIOSH and MSHA conducted a joint survey to determine the range of coal particle sizes found in dust samples collected from intake and return airways of U.S. coal mines. Results from this survey show that the coal dust found in mines today is much finer than in mines of the 1920s. This increase in fine dust is presumably due to the increase in mechanization. In light of this recent comprehensive dust survey, NIOSH conducted additional large-scale explosion tests at the Lake Lynn Experimental Mine (LLEM) to determine the degree of rock dusting necessary to abate explosions. The tests used Pittsburgh seam coal dust blended as 38% minus 200 mesh and referred to as medium-sized dust. This medium-sized blend was used to represent the average of the finest coal particle size collected from the recent dust survey. Explosion tests indicate that medium-sized coal dust required 76.4% TIC to prevent explosion propagation. Even the coarse coal dust (20% minus 200 mesh or 75 microm), representative of samples obtained from mines in the 1920s, required approximately 70% TIC to be rendered inert in the larger LLEM, a level higher than the current regulation of 65% TIC. Given the results of the extensive in-mine coal dust particle size surveys and large-scale explosion tests, NIOSH recommends a new standard of 80% TIC be required in the intake airways of bituminous coal mines in the absence of methane. The survey results indicate that in some cases there are no substantial differences between the coal dust particle size distributions in return and intake air courses in today's coal mines. The survey results indicate that the current requirement of 80% TIC in return airways is still appropriate in the absence of background methane."--NIOSHTIC-2.
Book Synopsis Formation, Collection, and Treatment of Coal Dust in Mines by : Daniel Harrington
Download or read book Formation, Collection, and Treatment of Coal Dust in Mines written by Daniel Harrington and published by . This book was released on 1939 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: