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Coal Dust Explosions In Mines Causes Effects And Recommendations For Prevention
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Book Synopsis Coal-dust Explosions in Mines: Causes, Effects, and Recommendations for Prevention ... by : George Samuel Rice
Download or read book Coal-dust Explosions in Mines: Causes, Effects, and Recommendations for Prevention ... written by George Samuel Rice and published by . This book was released on 1929 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Prevention of Mine Explosions by : Victor Watteyne
Download or read book The Prevention of Mine Explosions written by Victor Watteyne and published by . This book was released on 1912 with total page 12 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 Coal, and the Prevention of Explosions and Fires in Mines by : John Harger
Download or read book Coal, and the Prevention of Explosions and Fires in Mines written by John Harger and published by . This book was released on 1913 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mine Safety Board Decision 32 by : United States. Bureau of Mines
Download or read book Mine Safety Board Decision 32 written by United States. Bureau of Mines and published by . This book was released on 1940 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coal Mine Dust by : Patrick Fitzhugh
Download or read book Coal Mine Dust written by Patrick Fitzhugh and published by Nova Science Publishers. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Book & CD. Coal mine dust is one of the most serious occupational hazards in the coal mining industry, and overexposure can cause coal workers' pneumoconiosis (CWP) and a number of other lung diseases, collectively referred to a black lung disease. CWP has been the underlying or contributing cause of death for more than 75,000 coal miners since 1968. This book provides an overview of key studies, background history and health reviews on occupational exposure to respirable coal mine dust.
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.
Author :Kansas. Commission to Investigate the Cause of Recent Disastrous Explosions in the Coal-Mines of Southeastern Kansas Publisher : ISBN 13 : Total Pages :20 pages Book Rating :4.:/5 (31 download)
Book Synopsis Report of Commission Appointed to Investigate the Cause of Recent Disastrous Explosions in the Coal-mines of Southeastern Kansas and to Suggest Some Means of Preventing the Recurrence of Such Disasters by : Kansas. Commission to Investigate the Cause of Recent Disastrous Explosions in the Coal-Mines of Southeastern Kansas
Download or read book Report of Commission Appointed to Investigate the Cause of Recent Disastrous Explosions in the Coal-mines of Southeastern Kansas and to Suggest Some Means of Preventing the Recurrence of Such Disasters written by Kansas. Commission to Investigate the Cause of Recent Disastrous Explosions in the Coal-Mines of Southeastern Kansas and published by . This book was released on 1905 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Mine Ventilation by : Pramod Thakur
Download or read book Advanced Mine Ventilation written by Pramod Thakur and published by Woodhead Publishing. This book was released on 2018-11-23 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Mine Ventilation presents the reader with a unique book providing the theory and applications for designing mine ventilation with computers, controlling respirable coal dust and diesel particulate matter, combustible gas control and, mine fire management. The book summarizes the latest knowledge created in the past 40 years in these areas. Authored by an expert in the field with 50 years' experience, the book is a great combination of theory and applications. The mine ventilation section provides computer programs (both FORTRAN and C++) to calculate not only air quantities and pressure losses but also the concentration of any pollutant in all junctions and branches of the mine network. Small particle mechanics and dust control is covered in the second section of the book. The third section on combustible gas control discusses all aspects of mine gases from origin to control. The last section on mine fire control discusses spontaneous combustion, frictional ignitions, mine explosions, and mine sealing and recovery. The book is not only a very good reference book but also an excellent textbook for two graduate level courses in Mining Engineering. Provides the latest knowledge on the four related topics of mine environment control; that is, ventilation, dust, gas, and fire in a single volume. Computer simulation of mine ventilation in both FORTRAN and C++. State-of-the-art respirable dust control. Mine degasification and methane production from a coal lease. Mine fire management.
Book Synopsis Explosions in Underground Coal Mines by : Jianwei Cheng
Download or read book Explosions in Underground Coal Mines written by Jianwei Cheng and published by Springer. This book was released on 2018-03-23 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the hazard of gas explosions in sealed underground coal mines, and how the risk of explosion can be assessed, modeled, and mitigated. With this text, coal mine operators and managers will be able to identify the risks that lead to underground mine gas explosions, and implement practical strategies to optimize mining safety for workers. In six chapters, the book offers a framework for understanding the sealed coal mine atmosphere, the safety characteristics that are currently in place, and the guidelines to be followed by engineers to improve upon these characteristics. The first part of the book describes the importance and characteristics of underground gas mine explosions in a historical context with data showing the high number of fatalities from explosion incidents, and how risk has been mitigated in the past. Chapters also detail mathematical models and explosibility diagrams for determining and understanding the risk factors involved in mine explosions. Readers will also learn about safety operations, and assessments for the sealed mine atmosphere. With descriptions of chapter case studies, mining engineers and researchers will learn how to apply safety measures in underground coal mines to improve mining atmospheres and save lives.
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 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 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 Prevention of Accidents Due to Explosions Underground in Coal Mines by : International Labour Office
Download or read book Prevention of Accidents Due to Explosions Underground in Coal Mines written by International Labour Office and published by . This book was released on 1974 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Code of practice comprising occupational safety guidelines for preventing underground explosions in coal mining - covers ventilation, gas detection, fire control, dust control, etc.
Book Synopsis Industrial-dust Explosions by : Hylton R. Brown
Download or read book Industrial-dust Explosions written by Hylton R. Brown and published by . This book was released on 1945 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Improving Self-Escape from Underground Coal Mines by : National Research Council
Download or read book Improving Self-Escape from Underground Coal Mines written by National Research Council and published by National Academies Press. This book was released on 2013-06-26 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal mine disasters in the United States are relatively rare events; many of the roughly 50,000 miners underground will never have to evacuate a mine in an emergency during their careers. However, for those that do, the consequences have the potential to be devastating. U.S. mine safety practices have received increased attention in recent years because of the highly publicized coal mine disasters in 2006 and 2010. Investigations have centered on understanding both how to prevent or mitigate emergencies and what capabilities are needed by miners to self-escape to a place of safety successfully. This report focuses on the latter - the preparations for self-escape. In the wake of 2006 disasters, the U.S. Congress passed the Mine Improvement and New Emergency Response Act of 2006 (MINER Act), which was designed to strengthen existing mine safety regulations and set forth new measures aimed at improving accident preparedness and emergency response in underground coal mines. Since that time, the efforts of the National Institute of Occupational Safety and Health (NIOSH) and the Mine Safety and Health Administration (MSHA) have contributed to safety improvements in the mining industry. However, the Upper Big Branch mine explosion in 2010 served as a reminder to remain ever vigilant on improving the prevention of mine disasters and preparations to help miners survive in the event of emergencies. This study was set in the context of human-systems integration (HSI), a systems approach that examines the interaction of people, tasks, and equipment and technology in the pursuit of a goal. It recognizes this interaction occurs within, and is influenced by, the broader environmental context. A key premise of human-systems integration is that much important information is lost when the various tasks within a system are considered individually or in isolation rather than in interaction with the whole system. Improving Self-Escape from Underground Coal Mines, the task of self-escape is part of the mine safety system.
Book Synopsis Explosion Pressure Design Criteria for New Seals in U.S. Coal Mines by : M. J. Sapko
Download or read book Explosion Pressure Design Criteria for New Seals in U.S. Coal Mines written by M. J. Sapko and published by . This book was released on 2007 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seals are barriers constructed in underground coal mines throughout the United States to isolate abandoned mining panels or groups of panels from the active workings. Historically, mining regulations required seals to withstand a 140-kPa (20-psig) explosion pressure. However, the Mine Improvement and New Emergency Response Act ("MINER Act") requires the Mine Safety and Health Administration (MSHA) to increase this design standard by the end of 2007. This report provides a sound scientific and engineering justification to recommend a three-tiered explosion pressure design criterion for new seals in coal mines in response to the MINER Act. Much of the information contained in this report also applies to existing seals. Engineers from the National Institute for Occupational Safety and Health (NIOSH) examined seal design criteria and practices used in the United States, Europe, and Australia and then classified seals into their various applications. Next, the engineers considered various kinds of explosive atmospheres that can accumulate within sealed areas and used thermodynamic calculations and simple gas explosion models to estimate worst-case explosion pressures that could impact seals. Three design pressure-time curves were developed for the dynamic structural analysis of new seals under the conditions in which those seals may be used: unmonitored seals where there is a possibility of methane-air detonation or high-pressure nonreactive shock waves and their reflections behind the seal; unmonitored seals with little likelihood of detonation or high-pressure nonreactive shock waves and their reflections; and monitored seals where the amount of potentially explosive methane-air is strictly limited and controlled. Figure I is a simple flowchart that illustrates the key decisions in choosing between the monitored or unmonitored seal design approaches and the three design pressure-time curves. For the first condition, an unmonitored seal with an explosion run-up length of more than 50 m (165 ft), the possibility of detonation or high-pressure nonreactive shock waves and their reflections exists. The recommended design pressure-time curve rises to 4.4 MPa (640 psig) and then falls to the 800-kPa (120-psig) constant volume (CV) explosion overpressure. For unmonitored seals with an explosion run-up length of less than 50 m (165 ft), the possibility of detonation or high-pressure nonreactive shock waves and their reflections is less likely. A less severe design pressure-time curve that simply rises to the 800-kPa (120-psig) CV explosion overpressure may be employed. For monitored seals, engineers can use a 345-kPa (50-psig) design pressure-time curve if monitoring can ensure that (1) the maximum length of explosive mix behind a seal does not exceed 5 m (16 ft) and (2) the volume of explosive mix does not exceed 40% of the total sealed volume. Use of this 345-kPa (50-psig) design pressure-time curve requires monitoring and active management of the sealed area atmosphere. These design pressure-time curves apply to new seal design and construction. NIOSH engineers used these design pressure-time curves along with the Wall Analysis Code (WAC) from the U.S. Army Corps of Engineers and a simple plug analysis to develop design charts for the minimum required seal thickness to withstand each of these explosion pressure-time curves. These design charts consider a range of practical construction materials used in the mining industry and specify a minimum seal thickness given a certain seal height. Results of these analyses show that resistance to even the 4.4-MPa (640-psig) design pressure time curve can be achieved using common seal construction materials at reasonable thickness, demonstrating the feasibility and practical applications of this report. Engineers can also use other structural analysis programs to analyze and design seals by using the appropriate design pressure-time curve for the structural load and a design safety factor of 2 or more. Finally, this report also provides criteria for monitoring the atmosphere behind seals. NIOSH will continue research efforts to improve underground coal mine sealing strategies and to prevent explosions in sealed areas of coal mines. In collaboration with the U.S. National Laboratories, NIOSH will further examine the dynamics of methane and coal dust explosions in mines and the dynamic response of seals to these explosion loads. This upcoming project seeks to better understand the detonation phenomena and simple techniques to protect seals from transient pressures. Additional work will include field measurements of the atmosphere within sealed areas. Successful implementation of the seal design criteria and the associated recommendations in this report for new seal design and construction should significantly reduce the risk of seal failure due to explosions in abandoned areas of underground coal mines.
