Workplace Explosions: a Comparison of the Mine Safety and Health
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
The Real Effects of Mandatory Dissemination of Non- Financial Information Through Financial Reports
Working Paper No. 16-04 The Real Effects of Mandatory Dissemination of Non- Financial Information through Financial Reports Hans B. Christensen University of Chicago Booth School of Business Eric Floyd Rice University Jones School of Business Lisa Yao Liu University of Chicago Booth School of Business Mark Maffett University of Chicago Booth School of Business All rights reserved. Short sections of text, not to exceed two paragraphs. May be quoted without Explicit permission, provided that full credit including notice is given to the source. This paper also can be downloaded without charge from the Social Science Research Network Electronic Paper Collection. The Real Effects of Mandatory Dissemination of Non-Financial Information through Financial Reports By HANS B. CHRISTENSEN, ERIC FLOYD, LISA YAO LIU and MARK MAFFETT* February 2016 Abstract: We examine the real effects of mandatory, non-financial disclosures, which require SEC-registered mine owners to disseminate their mine-safety records through their financial reports. These safety records are already publicly available elsewhere, which allows us to examine the incremental effects of disseminating information through financial reports. Comparing mines owned by SEC-registered issuers to those mines that are not, we document that including safety records in financial reports decreases mining-related citations and injuries by 11 and 13 percent, respectively, and reduces labor productivity by approximately 0.9 percent. Additional evidence suggests that increased dissemination, rather than unobservable factors associated with regulatory intervention, drive these effects. We also provide evidence that feedback effects from equity markets are a potential mechanism through which the dissemination of information leads to real effects. -
Mitigating Coal Dust Explosions in Modern Underground Coal Mines
MITIGATING COAL DUST EXPLOSIONS IN MODERN UNDERGROUND COAL MINES Marcia L. Harris1, Kenneth L. Cashdollar2, Chi-Keung Man3 and Ed Thimons4 1The National Institute For Occupational Safety and Health, P.O. Box 18070, 626 Cochrans Mill Rd., Pittsburgh, PA 15236, Email: [email protected] 2The National Institute For Occupational Safety and Health, P.O. Box 18070, 626 Cochrans Mill Rd., Pittsburgh, PA 15236, Email: [email protected] 3The National Institute For Occupational Safety and Health, P.O. Box 18070, 626 Cochrans Mill Rd., Pittsburgh, PA 15236, Email: [email protected] 4The National Institute For Occupational Safety and Health, P.O. Box 18070, 626 Cochrans Mill Rd., Pittsburgh, PA 15236, Email: [email protected] ABSTRACT The N ational Institute for Occupational Safety and Health (NIOSH), as part of its continuing research program for evaluating coal dust explosion hazards, has investigated several areas in which current practices may need to be updated in order to adequately protect mines against coal dust propagated explosions. In the United States, current rock dusting requirements remained largely unchanged since 1969. US Title 30 Code of Federal Regulations Section 75.403 is based on a coal dust particle size survey performed in the 1920s and later was supplemented by full-scale testing of the rock dust ability to inert a coal dust explosion. NIOSH recently conducted a comprehensive survey of US underground coal mines to determine the range of coal particle sizes found in dust samples collected from the mine entries. Due to advancements in technology and modern coal mining techniques, the current coal dust particles in intake airways are significantly finer than those found in the mines in the 1920s. -
Combustible Dust
Combustible dust SS-957 March 2019 Combustible dust Table of contents What are the risks? ..................................................................................... 2 Know the dust fire and explosion pentagon ................................................ 4 Avoid the secondary dust explosion ............................................................ 4 Learn from serious accidents ...................................................................... 5 National emphasis program ........................................................................ 9 Review your hazards and controls ............................................................ 11 Resources ................................................................................................. 16 SS-957 | ©SAIF 03.19 Page | 2 Combustible dust What are the risks? Combustible dust explosion hazards exist in a variety of industries, including food (such as candy, starch, flour, and feed), plastics, wood, rubber, furniture, textiles, pesticides, pharmaceuticals, dyes, coal, metals (such as aluminum, chromium, iron, magnesium, and zinc), and fossil-fuel power generation. The vast majority of natural and synthetic organic materials, as well as some metals, can form combustible dust. The National Fire Protection Association (NFPA) Industrial Fire Hazards Handbook states: “Any industrial process that reduces a combustible material and some normally noncombustible materials to a finely divided state presents a potential for a serious fire or explosion.” The primary factor -
Approaching Coal Mine Safety from a Comparative Law and Interdisciplinary Perspective
Volume 111 Issue 1 Article 5 September 2008 Approaching Coal Mine Safety from a Comparative Law and Interdisciplinary Perspective Anne Marie Lofaso West Virginia University College of Law, [email protected] Follow this and additional works at: https://researchrepository.wvu.edu/wvlr Part of the Labor and Employment Law Commons, Mining Engineering Commons, and the Oil, Gas, and Mineral Law Commons Recommended Citation Anne M. Lofaso, Approaching Coal Mine Safety from a Comparative Law and Interdisciplinary Perspective, 111 W. Va. L. Rev. (2008). Available at: https://researchrepository.wvu.edu/wvlr/vol111/iss1/5 This Thinking Outside the Box: A Post-Sago Look at Coal Mine Safety is brought to you for free and open access by the WVU College of Law at The Research Repository @ WVU. It has been accepted for inclusion in West Virginia Law Review by an authorized editor of The Research Repository @ WVU. For more information, please contact [email protected]. Lofaso: Approaching Coal Mine Safety from a Comparative Law and Interdisc APPROACIIING COAL MINE SAFETY FROM A COMPARATIVE LAW AND INTERDISCIPLINARY PERSPECTIVE Anne Marie Lofaso* I. IN TROD UCTION ....................................................................................... I II. COAL MINE SAFETY CONCERNS ......................................................... 2 A. Overview of U.S. Coal Mine Industry's Safety Issues............. 2 B. Case Study: Sago ................................................................. 3 C. Questions Raised in Sago 's Aftermath .................................. -
It's About Time: a Proposal to Establish A
NOTES IT’S ABOUT TIME: A PROPOSAL TO ESTABLISH A SPECIALIZED INTERNATIONAL AGENCY FOR COAL MINER SAFETY AND HEALTH Mining is inherently high risk and will always remain so as long as it is done by people. All underground mines face the same problems. It takes eternal vigilance to stay on top of it.1 I. INTRODUCTION Traditionally, underground coal mining has posed significant risks to workers’ health and safety.2 Through continued improvements in technologies, new capital investments, and continuously improved training, some dangers have been controlled.3 However, without a “safety net” including assessments and control of risks, “accidents and occupational diseases can and do occur.”4 Looking back at the recent coal mining disasters across the world, it is clear that uniform global safety and health standards for coal mining are imperative. Even though coal mining claims the lives of thousands of human beings across the world each year, it is a fundamental energy source that cannot be abandoned in the foreseeable future.5 The global 1. Charles Hutzler, World’s Coal Use Carries Deadly Cost, ASSOCIATED PRESS, Nov. 11, 2007 (quoting Dave Feickert, an independent mine safety consultant based in New Zealand, who has worked extensively in China). 2. International Labour Organization, Sector Meetings: Meeting of Experts on Safety and Health of Coal Mines, May 8-13, 2006, http://www.ilo.org/public/english/dialogue/sector/techmeet/meshcm06/index.htm. 3. Id. 4. Id. 5. In 2006, there were seventy-three total mining deaths in the United States, forty-seven of which were related to coal mining. -
Twists and Turns in Ancient Roads: As Unidentified
CLIMATE CHANGE AND THE WAR ON COAL: EXPLORING THE DARK SIDE Patrick Charles McGinley∗ To see coal purely as a gift from God overlooks the many dangerous strings attached to that gift. Similarly, to see it as just an environmental evil would be to overlook the undeniable good that accompanies that evil. “Failing to recognize both sides of coal—the vast power and the exorbitant costs—misses the essential, heartbreaking drama of the story.1 TABLE OF CONTENTS Introduction ............................................................................................... 256 I. Coal at the Millennium .......................................................................... 258 II. History of Coal ..................................................................................... 262 A. Early History .................................................................................... 262 B. Coal and the Industrial Age .............................................................. 262 C. Coal and Industrialization in the United States ................................ 263 III. Coal’s Dark Side: Examining its Externalities .................................... 265 A. The Socio-Economic Costs of Coal Mining and Burning ................ 266 1. Industrial Awakening in the Coalfields .............................. 266 ∗ Professor McGinley is the “Judge Charles H. Haden II Professor of Law” at West Virginia University. In the print version of Volume 13 Issue 2, the Vermont Journal of Environmental Law mistakenly inserted the name of a purported "co-author." -
Robert C. Byrd Miner Safety and Health Act of 2010
111TH CONGRESS REPT. 111–579 " ! 2d Session HOUSE OF REPRESENTATIVES Part 1 ROBERT C. BYRD MINER SAFETY AND HEALTH ACT OF 2010 JULY 29, 2010.—Committed to the Committee of the Whole House on the State of the Union and ordered to be printed Mr. GEORGE MILLER of California, from the Committee on Education and Labor, submitted the following R E P O R T together with SUPPLEMENTAL AND MINORITY VIEWS [To accompany H.R. 5663] [Including cost estimate of the Congressional Budget Office] The Committee on Education and Labor, to whom was referred the bill (H.R. 5663) to improve compliance with mine and occupa- tional safety and health laws, empower workers to raise safety con- cerns, prevent future mine and other workplace tragedies, establish rights of families of victims of workplace accidents, and for other purposes, having considered the same, report favorably thereon with an amendment and recommend that the bill as amended do pass. The amendment is as follows: Strike all after the enacting clause and insert the following: SECTION 1. SHORT TITLE; TABLE OF CONTENTS. (a) SHORT TITLE.—This Act may be cited as the ‘‘Robert C. Byrd Miner Safety and Health Act of 2010’’. (b) TABLE OF CONTENTS.—The table of contents for this Act is as follows: Sec. 1. Short title; table of contents. Sec. 2. References. TITLE I—ADDITIONAL INSPECTION AND INVESTIGATION AUTHORITY Sec. 101. Independent accident investigations. Sec. 102. Subpoena authority and miner rights during inspections and investigations. Sec. 103. Designation of miner representative. Sec. 104. Additional amendments relating to inspections and investigations. -
Combustible Dust Flame Propagation and Quenching in Pipes and Ducts
TECHNICAL NOTES Combustible Dust Flame Propagation and Quenching in Pipes and Ducts FINAL REPORT BY: Alexander Ing National Fire Protection Association, 1 Batterymarch Park, Quincy, Massachusetts, USA. December 2018 © 2018 Fire Protection Research Foundation 1 Batterymarch Park, Quincy, MA 02169-7417, USA Email: [email protected] | Web: nfpa.org/foundation ---page intentionally left blank--- —— Page ii —— FOREWORD A technical basis is required for determining when pipes or ducts are too small in diameter to permit the propagation of combustible dust deflagrations. This must be evaluated considering the characteristics of the equipment system (pipe/duct diameter and length), properties of the combustible dust, and operating conditions (pressure, temperature, flow rate, etc.). The knowledge will permit establishing rational protection requirements in NFPA’s various combustible dust fire and explosion prevention standards. There is also a lack of knowledge around conditions influencing the explosion propagation through piping, especially small diameter piping. Having a clear understanding of experimental testing data would allow analysis to see what conditions and parameters will affect the explosion propagation and also point out where there are knowledge gaps. This comprehensive literature review project seeks to identify the parameters affecting flame propagation involving combustible dusts within pipes and ducts, and seeks to determine the conditions under which a combustible dust flame will not propagate (i.e., will quench) within a piping or ductwork system. The following tasks have been carried out for this project: 1) Identify the conditions under which combustible dust deflagration will not propagate within a piping or duct work system. 2) Identify the factors (pipe diameter, pipe length, dust type, and dust concentration) affecting the explosion propagation through pipes from relevant literatures. -
Explosibility of Coal Dust
DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY GEOKGE OTIS SMITH, DIRECTOR BULLETIN 425 THE EXPLOSIBILITY OF COAL DUST BY GEORGE S. RICE WITH CHAPTERS BX J. C. W. FRAZER, AXEL LARSEN, FRANK HAAS, AND CARL SCHOLZ WASHINGTON GOVERN M E N T P K I N T IN G OFFICE 1910 CONTENTS. Page. Introd uctory statement...................................... ............ 9 The coal-dust, problem................................................ 9 i Acknowledgments.................................................... 10 Historical review of the coal-dust question in Europe ....................... 11 Observations in England prior to 1850................................. 11 Observations by French engineers prior to 1890........................ 12 Experiments in England between 1850 and 1885........................ 12 Experiments in Prussia............................,.............:..... 14 Experiments in Austria between 1885 and 1891......................... 16 Views of English authorities between 1886 and 1908.................... 17 German, French, and Belgian stations for testing explosives............ 19 Altofts gallery, England, 1908......................................... 21 Second report of Royal Commission on Mines, 1909...................... 21 Recent Austrian experiments.......................................... 22 Historical review of the coal-dust question in the United States.............. 23 Grahamite explosions in West Virginia, 1871 and 1873.................. 23 Flour-mill explosion at Minneapolis, 1878............................. -
Preventing Grain Dust Explosions
DIVISION OF AGRICULTURE RESEARCH & EXTENSION Agriculture and Natural Resources University of Arkansas System FSA1092 Preventing Grain Dust Explosions Introduction The National Safety Council Sammy Sadaka, defnes dust as solid particles derived Ph.D., P.E. Combustible dust explosion from crushing, grinding, rapid Associate Professor - hazards are prevalent in various impact and detonation of organic or Extension Engineer industries including, but not limited inorganic materials such as rocks, to, agriculture grain, food, chemicals, metal, wood or grain. Dust originates fertilizer, tobacco and pesticides. The from operations of dry and powdery Kingsly Ambrose, Ph.D. total number of reported agricultural Associate Professor - material such as conveying, trimming dust explosion incidents in the United of excess material, solids crushing Purdue University States reached 84 cases between 2009 and screening, sanding, tank and and 2018 (Fig. 1), resulting in 16 fatal- bin feeding and storing of granular John W. Magugu, Ph.D. ities and 96 injuries cases, respectively materials, among others. Professional Assistant - (Fig. 2). There were 12 dust explosion University of Arkansas incidents in 2018 alone, the highest rate in a decade. Dust explosions in grain elevators corresponded to 51 percent of all U.S. agricultural dust ex- plosion incidents, with many of these occuring in grain milling facilities. This fact sheet presents an overview on how to help prevent dust explosions in both industrial mill facilities and producer-owned facilities. Grain Dust Figure 3. Westwego Grain Dust Explosion in Louisiana, December 1977 (Courtesy of Gambit) Figure 1. Total U.S. Agricultural Dust Explosions 14 12 Grain dust is a highly combustible 10 material, and has more combustible 8 6 power than coal dust. -
Combustible Dust Explosion Hazard Awareness
Combustible Dust Explosion Hazard Awareness Instructor Guide Texas Engineering Extension Service (TEEX) Professional and Regulatory Training (PRT) A Member of The Texas A&M University System OS PRT281 TR 07/09 COMBUSTIBLE DUST EXPLOSION HAZARD AWARENESS INSTRUCTOR GUIDE The Texas A&M University System Texas Engineering Extension Service (TEEX) Professional and Regulatory Training (PRT) COMBUSTIBLE DUST EXPLOSION HAZARD AWARENESS Copyright Information COMBUSTIBLE DUST EXPLOSION HAZARD AWARENESS © 2009 Texas Engineering Extension Service All Rights Reserved. First Edition July 2009. Printed in the United States of America Reproduction of this document, in whole or in part, requires written authorization from the Director, Texas Engineering Extension Service (TEEX), The Texas A&M University System, unless such reproduction is authorized or executed by the United States Government. The safety statements, procedures, and guidelines contained in this manual are current as of the publication date. Prior to using the safety statements, procedures, and guidelines contained in this manual, it is advised that you confirm the currency of these statements, procedures, and guidelines with the appropriate controlling authorities. This training is provided under Susan B. Harwood grant number 17798-08-60-F-48 awarded to the Texas Engineering Extension Service, OSHA Training Institute Southwest Education Center from the Occupational Safety and Health Administration, U.S. Department of Labor. It does not necessarily reflect the views or policies of the U.S. Department of Labor, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government. INSTRUCTOR GUIDE Table of Contents Class Schedule.................................................vii Explosion Dynamics ................................ 1-8 Distribution Shipping List ................................ -
Coal Dust Explosion at Mitsui Miike Coal Mine November 9, 1963.In the Tunnels at Mitsui Miike in Omuta, Fukuoka
Failure Knowledge Database / 100 Selected Cases Coal dust explosion at Mitsui Miike coal mine November 9, 1963.In the tunnels at Mitsui Miike in Omuta, Fukuoka Masayuki Nakao (Institute of Engineering Innovation, School of Engineering, The University of Tokyo) An explosion occurred in a m ine tunnel at Mi tsui Miike coal m ine (Figure 1) roughly 500 meters below the m ine ground-level entrance. T he blast and fla me caused roof fall in m any areas in the tunnels, which then quickly filled wi th carbon monoxide. 458 people were killed and 555 people were injured. It was the worst postwar m ine disaster . Lack of safety provisions was the primal cause. Figure 2 indicates the cross-section of the accident site. The coal beds at Mitsui Miike sloped towards Ariake Sea, and mine openings had also shifted over time towards the se a ( to the lef t in the f igure) f rom m ountainside. At the tim e, coal beds roughly 350 to 450 meters below the sea level were being mined. Saga Omuta Ariake Sea Mitsui Miike Isahaya Shimabara Kumamoto Nagasaki Peninsula Figure 1: Location of Mitsui Miike Coal Mine 1 Failure Knowledge Database / 100 Selected Cases Mitsui Miike Mine Ariake Sea 1st sloped mine 2nd sloped mine Location where the roof fell 300m horizontal run Location of original explosion 450m horizontal run Tunnel with severe explosion Mine dust pump Figure 2: Cross section of the accident site [1] 1. Event An explosion occurred in a tunnel at Mitsui Miike coal m ine roughly 500 m eters below the mine entrance.