Download or read book Explosion Effects on Mine Ventilation Stoppings written by Department of Health and Human Services and published by CreateSpace. This book was released on 2013-10 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Institute for Occupational Safety and Health (NIOSH) and the Mine Safety and Health Administration (MSHA) conducted joint research to evaluate explosion blast effects on typical U.S. mine ventilation stoppings in the NIOSH Pittsburgh Research Laboratory's (PRL) Lake Lynn Experimental Mine (LLEM). An innovative Australian-designed brattice stopping was also evaluated. After mine explosion accidents, MSHA conducts investigations to determine the cause(s) as a means to prevent future occurrences. As part of these postexplosion investigations, the condition of underground stoppings, including the debris from damaged stoppings, is documented as evidence of the approximate strength and the direction of the explosion forces. Permanent stoppings are used to control and direct the ventilation airflow through underground coal mines to dilute and render harmless methane, entrained coal dust, and other contaminants at the working face and other areas of the mine. 30 CFR 75.333 requires that permanent stoppings be built and maintained between intake and return air courses beginning at the third connecting crosscut outby the working face and to separate other air courses and direct air as specified. To perform the intended function and meet the requirements of 30 CFR 75.333, permanent stoppings are to be constructed in a traditionally accepted method and of materials that have been demonstrated to perform adequately or in a method and of materials that have been tested and shown to have a minimum strength equal to or greater than the traditionally accepted in-mine controls. A few examples of traditionally accepted [61 Fed. Reg. 9764 (1996)] stopping construction methods are as follows: (1) 8-in (20-cm) and 6-in (15-cm) concrete block (both hollow-core and solid) with mortared joints, (2) 8-in (20-cm) and 6-in (15-cm) concrete blocks, dry-stacked and coated on one or both sides with a strength-enhancing sealant suitable for dry-stacked stoppings, and (3) steel stoppings (minimum 20-gauge) with seams and perimeter sealed with a suitable mine sealant. Unlike mine ventilation seal structures that are commonly used to isolate unused sections of the mine, stoppings are not intended to withstand explosion overpressures. Unfortunately, mine explosions do occur. Depending on the location and severity, explosions can result in fatalities and injuries to underground mining personnel and cause considerable underground damage to equipment and structures. In the mine explosions in Alabama in 2001 and West Virginia in 2006, ventilation stoppings were destroyed. Mine Safety and Health Administration (MSHA) personnel conduct investigations into these types of explosion accidents to determine the root cause(s) as a means to prevent future occurrences. As part of postexplosion investigations, the location and condition of underground ventilation structures and debris are mapped. This information helps the investigators determine the strength and the direction of the forces of the explosion.

Download or read book Explosion Effects on Mine Ventilation Stoppings written by Eric S. Weiss and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Explosion Effects on Mine Ventilation Stoppings written by Eric S. Weiss and published by Createspace Independent Pub. This book was released on 2008-11-30 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Institute for Occupational Safety and Health (NIOSH) and the Mine Safety and Health Administration (MSHA) conducted joint research to evaluate explosion blast effects on typical U.S. mine ventilation stoppings in the NIOSH Pittsburgh Research Laboratory's (PRL) Lake Lynn Experimental Mine (LLEM). An innovative Australian-designed brattice stopping was also evaluated. NIOSH findings and recommendations are detailed.

Download or read book Explosion Effects on Mine Ventilation Stoppings Scholar s Choice Edition written by U. S. Department of Health and Human Services and published by . This book was released on 2015-02-16 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Mine Ventilation Stoppings written by R. Y. Williams and published by Forgotten Books. This book was released on 2018-02-28 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Mine-Ventilation Stoppings: With Especial Reference to Coal Mines in Illinois The foregoing discussion of renewals deals with the depreciation of stoppings through normal mining conditions. There are, however, extraordinary agencies that destroy stoppings, some of these agencies partly or wholly wrecking certain types of stoppings and yet in no Way injuring other types. Such agencies are: Fires, windy shots, blown-out shots, explosions, local roof falls, general mine squeezes, and water. In order to obtain the annual expense for emergency repairs on the different kinds of mine stoppings, information was obtained from coal operators regarding the number of stoppings and the cost of repairs each year because of these extraordinary agencies. The quotient obtained by dividing the total cost by the number of stop pings ih use at the particular mine was charged to each stopping as the a1mual cost of emergency repairs. For example, at one mine the records showed that 18 stoppings were destroyed by windy or blown out shots; the cost of each repair averaged the total cost was and, as stoppings were in use, the expense to be dis tributed over each stopping was 12 cents per annum. A compilation of the information obtained on the annual expense required for emergency repairs is given in Table 7 following. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Mine ventilation Stoppings with Especial Reference to Coal Mines in Illinois written by Robert Young Williams and published by . This book was released on 1915 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 11th US North American Mine Ventilation Symposium 2006 written by Jan M. Mutmansky and published by CRC Press. This book was released on 2006-05-18 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the eleventh in a series which documents the technical papers of the mine ventilation symposium, which was initiated in 1982 by the Underground Ventilation Committee of the Society for Mining, Metallurgy, and Exploration, Inc. In more recent years, the event has expanded to include all of North America and is known as the US/North Am

Download or read book Evaluation of Explosion resistant Seals Stoppings and Overcast for Ventilation Control in Underground Coal Mining written by Eric S. Weiss and published by . This book was released on 2002 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ventilation of coal mines an essay on the cause of explosions by a colliery manager written by Ventilation and published by . This book was released on 1860 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Explosion Hazard in Mining written by John Nagy and published by . This book was released on 1981 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Principles and Practice of Mine Ventilation written by David Penman and published by . This book was released on 1951 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Explosions and Fires in Bituminous coal Mines written by United States. Bureau of Mines and published by . This book was released on 1946 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Prevention of Mine Explosions written by Victor Watteyne and published by . This book was released on 1908 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Concrete Stoppings in Coal Mines for Resisting Explosions written by George Samuel Rice and published by . This book was released on 1931 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mine ventilation Stoppings with Especial Reference to Coal Mines in Illinois written by United States. Bureau of Mines and published by . This book was released on 1916 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Extracting the Science written by Jürgen Brune and published by SME. This book was released on 2010 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: These research papers also cover a spectrum of innovative technical solutions, including computer-controlled mining equipment, remote monitoring of air quality, and virtual reality training systems.

Download or read book Coal dust Explosion Tests in the Experimental Mine 1913 1918 Inclusive written by George Samuel Rice and published by . This book was released on 1922 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: