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American Standard Practice For Rock Dusting Underground Bituminous Coal And Lignite Mines To Prevent Coal Dust Explosions Asa Standard M131 1960 Udc 62281
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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 American Standard Recommended Practice for Drainage of Coal Mines (M6.1-1955, UDC 622.5) by : American Standards Association
Download or read book American Standard Recommended Practice for Drainage of Coal Mines (M6.1-1955, UDC 622.5) written by American Standards Association and published by . This book was released on 1956 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effective Rock-dusting of Coal Mines by : George Samuel Rice
Download or read book Effective Rock-dusting of Coal Mines written by George Samuel Rice and published by . This book was released on 1927 with total page 8 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 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 Createspace Independent Pub. This book was released on 2010-05-31 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 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 Rock Dust in Bituminous-coal Mines During 1930-33 by : William Waugh Adams
Download or read book Rock Dust in Bituminous-coal Mines During 1930-33 written by William Waugh Adams and published by . This book was released on 1935 with total page 18 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 Practical Application and Cost of Proper Rock-dusting by : George Morton Kintz
Download or read book Practical Application and Cost of Proper Rock-dusting written by George Morton Kintz and published by . This book was released on 1930 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Allaying Dust in Bituminous-coal Mines with Water by : Daniel Harrington
Download or read book Allaying Dust in Bituminous-coal Mines with Water written by Daniel Harrington and published by . This book was released on 1939 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis What Do We Know about the Explosibility of Coal Dust in Mines? by : Harold Putnam Greenwald
Download or read book What Do We Know about the Explosibility of Coal Dust in Mines? written by Harold Putnam Greenwald and published by . This book was released on 1929 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Best Practices for Dust Control in Coal Mining by : Jay Colinet
Download or read book Best Practices for Dust Control in Coal Mining written by Jay Colinet and published by Createspace Independent Pub. This book was released on 2010 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Respirable dust exposure has long been known to be a serious health threat to workers in many industries. In coal mining, overexposure to respirable coal mine dust can lead to coal workers' pneumoconiosis (CWP). CWP is a lung disease that can be disabling and fatal in its most severe form. In addition, miners can be exposed to high levels of respirable silica dust, which can cause silicosis, another disabling and/or fatal lung disease. Once contracted, there is no cure for CWP or silicosis. The goal, therefore, is to limit worker exposure to respirable dust to prevent development of these diseases. The passage of the Federal Coal Mine Health and Safety Act of 1969 established respirable dust exposure limits, dust sampling requirements for inspectors and mine operators, a voluntary x-ray surveillance program to identify CWP in underground coal miners, and a benefits program to provide compensation to affected workers and their families. The tremendous human and financial costs resulting from CWP and silicosis in the U.S. underground coal mine workforce are shown by the following statistics: 1. During 1970-2004, CWP was a direct or contributing cause of 69,377 deaths of U.S. underground coal mine workers. 2. During 1980-2005, over $39 billion in CWP benefits were paid to underground coal miners and their families. 3. Recent x-ray surveillance data for 2000-2006 show an increase in CWP cases. Nearly 8% of examined underground coal miners with 25 or more years of experience were diagnosed with CWP. 4. "Continuous miner operator" is the most frequently listed occupation on death certificates that record silicosis as the cause of death. In light of the ongoing severity of these lung diseases in coal mining, this handbook was developed to identify available engineering controls that can help the industry reduce worker exposure to respirable coal and silica dust. The controls discussed in this handbook range from long-utilized controls that have developed into industry standards to newer controls that are still being optimized. The intent was to identify the best practices that are available to control respirable dust levels in underground and surface coal mining operations. This handbook provides general information on the control technologies along with extensive references. In some cases, the full reference(s) will need to be consulted to gain in-depth information on the testing or implementation of the control of interest. The handbook is divided into five chapters. Chapter 1 discusses the health effects of exposure to respirable coal and silica dust. Chapter 2 discusses dust sampling instruments and sampling methods. Chapters 3, 4, and 5 focus on dust control technologies for longwall mining, continuous mining, and surface mining, respectively. Finally, it must be stressed that after control technologies are implemented, the ultimate success of ongoing protection for workers depends on continued maintenance of these controls. NIOSH researchers have often seen appropriate controls installed, but worker overexposures occurred because of the lack of proper maintenance of these controls." - NIOSHTIC-2
Book Synopsis Federal Mine Safety Code for Bituminous-coal and Lignite Mines of the United States by : United States. Bureau of Mines
Download or read book Federal Mine Safety Code for Bituminous-coal and Lignite Mines of the United States written by United States. Bureau of Mines and published by . This book was released on 1953 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309476011 Total Pages :169 pages Book Rating :4.3/5 (94 download)
Book Synopsis Monitoring and Sampling Approaches to Assess Underground Coal Mine Dust Exposures by : National Academies of Sciences, Engineering, and Medicine
Download or read book Monitoring and Sampling Approaches to Assess Underground Coal Mine Dust Exposures written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2018-10-04 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal remains one of the principal sources of energy for the United States, and the nation has been a world leader in coal production for more than 100 years. According to U.S. Energy Information Administration projections to 2050, coal is expected to be an important energy resource for the United States. Additionally, metallurgical coal used in steel production remains an important national commodity. However, coal production, like all other conventional mining activities, creates dust in the workplace. Respirable coal mine dust (RCMD) comprises the size fraction of airborne particles in underground mines that can be inhaled by miners and deposited in the distal airways and gas-exchange region of the lung. Occupational exposure to RCMD has long been associated with lung diseases common to the coal mining industry, including coal workers' pneumoconiosis, also known as "black lung disease." Monitoring and Sampling Approaches to Assess Underground Coal Mine Dust Exposures compares the monitoring technologies and sampling protocols currently used or required by the United States, and in similarly industrialized countries for the control of RCMD exposure in underground coal mines. This report assesses the effects of rock dust mixtures and their application on RCMD measurements, and the efficacy of current monitoring technologies and sampling approaches. It also offers science-based conclusions regarding optimal monitoring and sampling strategies to aid mine operators' decision making related to reducing RCMD exposure to miners in underground coal mines.
Book Synopsis Bituminous Coal-mine Safety-inspection Outline by : George Wallace Grove
Download or read book Bituminous Coal-mine Safety-inspection Outline written by George Wallace Grove and published by . This book was released on 1935 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Symposium on Respirable Coal Mine Dust, Washington D.C., November 3-4, 1969 by :
Download or read book Proceedings of the Symposium on Respirable Coal Mine Dust, Washington D.C., November 3-4, 1969 written by and published by . This book was released on 1970 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of its continuing program in protecting the health and safety of the nation's coal miners, the Bureau of Mines, Department of the Interior, presented on November 3-4, 1969, a Symposium on Respirable Coal Mine Dust. The Symposium was cosponsored by the American Mining Congress, the National Coal Association, and the National Independent Coal Operator's Association. Within recent years it has become evident that a large number of our coal miners develop a severe occupational respiratory disease commonly referred to as "black lung," but more appropriately designated as "coal worker's pneumoconiosis." Studies in the United States as well as in European countries clearly demonstrate that prevention of the disease is related to the control and suppression of respirable coal mine dust. This Symposium dealt with the various engineering methods of controlling dust in underground coal mines including ventialation, water suppression, machine design, and dust collection; and a discussion of respirators and life support systems. The merits of these various procedures and their potential application to underground coal mining were examined. In every case attempts were made to secure outstanding talent in each of the major areas discussed. The proceedings of the Symposium should constitue a reference on current technology for dust control. The Symposium helped to delineate those areas where additional research is needed and highlighted the necessity for concentrated efforts by both industry and Government for intensive research and investigative programs on engineering procedures to control respirable coal mine dust within prescribed hygienic limits. Hopefully, research will move so rapidly that within a reasonably short time this publication will be out of date in terms of dust control technology
