USA Leveling Mountains, Demolishing Communities
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Underground Hard-Rock Mining: Subsidence and Hydrologic Environmental Impacts
Technical Report on Underground Hard-Rock Mining: Subsidence and Hydrologic Environmental Impacts By Steve Blodgett, M.S. and James R. Kuipers, P.E. Center for Science in Public Participation Bozeman, MT February 2002 Abstract: Subsidence and hydrology impacts occur at every underground mining operation bringing about changes to surface landforms, ground water and surface water. Although the same impacts to mining operations, man-made surface structures and other features are relatively well known and studied, the environmental impacts related to subsidence and hydrology at underground mines are not well known and have not been extensively described. This report examines the occurrence and environmental impacts of subsidence and effects on hydrology at underground hard-rock metal mines in the U.S. and abroad. Technical and scientific literature is cited on the cause and effect of underground mining on surface landforms and water resources. Existing laws and recommended regulatory provisions to address these impacts are discussed. Conclusions about subsidence and hydrologic impacts at underground hard-rock metal mines are provided along with recommendations for addressing those impacts. Case studies are provided from copper, molybdenum, silver and other hard-rock mines where significant subsidence and hydrology-related environmental impacts have occurred. The Center for Science in Public Participation (CSP2) is a non-profit organization dedicated to providing professional technical assistance to public interest groups; state, tribal and federal governments; and industry. This report has been published with financial support from various foundations and individuals, and from the Mineral Policy Center and Amigos Bravos. The opinions contained in this study are those of the authors and are based solely upon their own scientific and technical knowledge and expertise. -
Mining's Toxic Legacy
Mining’s Toxic Legacy An Initiative to Address Mining Toxins in the Sierra Nevada Acknowledgements _____________________________ ______________________________________________________________________________________________________________ The Sierra Fund would like to thank Dr. Carrie Monohan, contributing author of this report, and Kyle Leach, lead technical advisor. Thanks as well to Dr. William M. Murphy, Dr. Dave Brown, and Professor Becky Damazo, RN, of California State University, Chico for their research into the human and environmental impacts of mining toxins, and to the graduate students who assisted them: Lowren C. McAmis and Melinda Montano, Gina Grayson, James Guichard, and Yvette Irons. Thanks to Malaika Bishop and Roberto Garcia for their hard work to engage community partners in this effort, and Terry Lowe and Anna Reynolds Trabucco for their editorial expertise. For production of this report we recognize Elizabeth “Izzy” Martin of The Sierra Fund for conceiving of and coordinating the overall Initiative and writing substantial portions of the document, Kerry Morse for editing, and Emily Rivenes for design and formatting. Many others were vital to the development of the report, especially the members of our Gold Ribbon Panel and our Government Science and Policy Advisors. We also thank the Rose Foundation for Communities and the Environment and The Abandoned Mine Alliance who provided funding to pay for a portion of the expenses in printing this report. Special thanks to Rebecca Solnit, whose article “Winged Mercury and -
CORONAQUARRY Surface Mining Permit & Revised Reclamation Plan
CORONAQUARRY Surface Mining Permit & Revised Reclamation Plan City of Corona Permit No. 93-01 State of California Mine ID No. 91-33-0027 Prepared for: 500 North Brand Avenue, Suite 500 Glendale, CA 91203 Prepared by: RGP Planning & Development Services 8921 Research Drive Irvine, CA 92618 Submi ed to: City of Corona Community Development Department 400 South Vicen a Avenue Corona, CA 92882 March 2013 CORONA QUARRY Surface Mining Permit & Revised Reclamation Plan City of Corona Permit 93-01 State of California Mine ID No. 91-33-0027 Prepared For: Vulcan Materials Company, West Region 500 North Brand Avenue, Suite 500 Glendale, CA 91203 (818) 553-8800 Prepared By: RGP Planning & Development Services 8921 Research Drive Irvine, CA 92618 (949) 450-0171 Submitted To: City of Corona Community Development Department 400 S. Vicentia Ave. Corona, CA 92882 (951) 736-2262 March 2013 Table of Contents 1.0 General Project Information ......................................................................................... 6 1.1 Purpose and Scope ............................................................................................................ 6 1.2 Entitlement History ............................................................................................................ 6 1.3 Objectives of Amended Project ......................................................................................... 10 1.4 PCC-Quality Aggregate Regional Needs Assessment ............................................................ 11 1.5 Comparison of 1989 -
Backfilling of Open-Pit Metallic Mines1
BACKFILLING OF OPEN-PIT METALLIC MINES1 Stephen M. Testa,2 and James S. Pompy Abstract: Thirty years ago, the Congress of the United States required that coal mines be backfilled as a routine element of reclamation when it passed the Surface Mining Control and Reclamation Act. Until recently, that concept has not been generally applied to non-coal surface mines. In 2003, California’s State Mining and Geology Board (Board) evaluated reclamation of open pit metallic mines in the state and determined that they were not being reclaimed, despite California’s Surface Mining and Reclamation Act of 1975 (SMARA). As a result, the Board issued regulations for the backfilling of open-pit metallic mines. The need for such regulation reflected several issues. Open-pit metallic mineral mines often create very large excavations. In addition, metallic mineral mines that employ the cyanide heap leach method for mineral segregation and collection frequently generate very large leach piles which create long term soil and groundwater contamination conditions. It is the intent of SMARA that completed mine sites present no additional dangers to the public health and safety, and that the mined lands are returned to an alternate, useful condition. To date, no large, open pit metallic mines in California have been returned to the conditions contemplated by SMARA, and these sites continue to pose significant environmental problems. The goal of the Board’s regulations was to require mining companies to address the problems identified above and to take responsibility for cleaning up their mine sites after the completion of surface mining operations, and return them to a condition that allows alternative uses and avoids environmental harms, thereby meeting the purpose and intent of SMARA. -
Surface Mining Methods and Equipment - J
CIVIL ENGINEERING – Vol. II - Surface Mining Methods and Equipment - J. Yamatomi and S. Okubo SURFACE MINING METHODS AND EQUIPMENT J. Yamatomi and S. Okubo University of Tokyo, Japan Keywords: Mining method, surface mining, open pit mining, open cast mining, placer mining, solution mining, leaching, stripping ratio, mining machinery, excavation, cutting, grading, loading, ditching Contents 1. Surface Mining Methods 1.1.Classification of Surface Mining Methods 1.2. Open Pit vs. Underground Mining Methods 1.3. Open Pit Mining 1.4. Open Cast Mining 1.5. Placer Mining 1.6 Solution Mining 2. Surface Mining Machinery Glossary Bibliography Biographical Sketches Summary This chapter deals with surface mining. Section 1 presents an overview of surface mining methods and practices as commonly employed in modern surface mining operations. The description includes a comparison of the advantages and disadvantages of surface and underground mining as well as brief explanations of open pit, open cast, placer, and solution mining operations. Section 2 describes surface mining equipment with particular focus on relatively large machines such as bucket wheel excavators, large shovels and draglines. 1. Surface Mining Methods UNESCO – EOLSS After a mineral deposit has been discovered, delineated, and evaluated, the most appropriate mining method is selected based on technical, economic, and environmentally accountable considerations. The first step in selecting the most appropriate miningSAMPLE method is to compare the CHAPTERS economic efficiency of extraction of the deposit by surface and underground mining methods. This section reviews surface mining methods and practices. 1.1. Classification of Surface Mining Methods Extraction of mineral or energy resources by operations exclusively involving personnel working on the surface without provision of manned underground operations is referred to as surface mining. -
EPA's National Hardrock Mining Framework
EPA’s National Hardrock Mining Framework U.S. Environmental Protection Agency Office of Water (4203) 401 M Street, SW Washington, DC 20460 HARDROCK MINING FRAMEWORK September 1997 September 1997 HARDROCK MINING FRAMEWORK Table of Contents 1.0 Purpose and Organization of the Framework ...................................1 1.1 Purpose of the Hardrock Mining Framework ..............................1 1.2 Why Develop an EPA National Mining Framework Now? ....................1 1.2.1 Need For Program Integration ...................................1 1.2.2 The Environmental Impacts of Mining .............................1 1.3 Goals of EPA’s Mining Framework .....................................3 1.4 Guide to the Framework ..............................................3 2.0 Current Status ..........................................................3 2.1 Overview of Regulatory Framework for Mining ............................3 2.2 EPA Statutory Authority .............................................4 2.3 Partnerships .......................................................6 3.0 Improving How We Do Business ...........................................7 3.1 Key Considerations .................................................7 3.2 Recommendations ..................................................8 4.0 Implementation Actions .................................................10 4.1 Putting the Framework into Action .....................................10 4.2 Next Steps .......................................................11 5.0 Introduction to the Appendices -
Endangered Species Act Section 7 Consultation Final Programmatic
Endangered Species Act Section 7 Consultation Final Programmatic Biological Opinion and Conference Opinion on the United States Department of the Interior Office of Surface Mining Reclamation and Enforcement’s Surface Mining Control and Reclamation Act Title V Regulatory Program U.S. Fish and Wildlife Service Ecological Services Program Division of Environmental Review Falls Church, Virginia October 16, 2020 Table of Contents 1 Introduction .......................................................................................................................3 2 Consultation History .........................................................................................................4 3 Background .......................................................................................................................5 4 Description of the Action ...................................................................................................7 The Mining Process .............................................................................................................. 8 4.1.1 Exploration ........................................................................................................................ 8 4.1.2 Erosion and Sedimentation Controls .................................................................................. 9 4.1.3 Clearing and Grubbing ....................................................................................................... 9 4.1.4 Excavation of Overburden and Coal ................................................................................ -
Hot Topics in Coal Company Bankruptcies
Hot Topics in Coal Company Bankruptcies David M. Hillman, Karen S. Park and Lucy F. Kweskin Table of Contents Hot Topics in Coal Company Bankruptcies Legacy Obligations: Union and Retiree Benefits and Obligations Under the Coal Act and Black Lung Act 2 Reclamation Obligations 9 Conclusion 12 Endnotes 13 About SRZ 17 The recent “fracking revolution” has allowed U.S. energy companies to tap into abundant supplies of shale gas.1 Previously thought inaccessible, this form of natural gas has been found throughout the United States in deep underground shale formations.2 The shale gas boom has created a spike in natural gas supplies, causing prices to decline to their lowest level since 1999,3 and this has been cause for concern for coal-based energy producers, as well as their suppliers, as declining natural gas prices have made competing gas-fired plants far more cost- effective alternatives to coal-burning plants.4 Indeed, coal-based electricity Resources LP (2009) and Consol- generation in the United States idated Energy (2007) provide has dipped from half to about only evidence of the rapidly deteriorating one-third since 2007, and profits market for U.S. coal companies. from the nation’s coal-fired power In addition, a 2013 Fitch Ratings plants selling electricity in the report identified several coal mining open market have plummeted from companies as “distressed” and $20 billion in 2008 to $4 billion “near distressed” given their bond in 2011.5 Consequently, plans for spreads over U.S. Treasuries. Fitch more than 150 new coal-fired Ratings -
Overview of Underground Mining Business
IR-DAY2018 1 Komatsu IR-DAY 2018 Overview of Underground mining business September 14th, 2018 Masayuki Moriyama Senior Executive Officer President, Mining Business Division Chairman, Komatsu Mining Corp. IR-DAY2018 Various Mineral Resources 2 • Mineral resources are generated through several geologic effects. • Coal is usually categorized as Soft Rock, while other minerals such as Ferrous and Non-Ferrous are called as Hard Rock. # Generation of deposits Major Mineral Resources Platinum, Chromium, Magmatic deposit Titanium, Magnetite Generated Hard Igneous ① from Rock rock Magma Gold, Copper, Silver, Lead, Zinc, Hydrothermal Tin, Tungsten, deposit Molybdenum, Uranium Sedimentation/Weathering/ Erosion Sedime Hematite, Nickel, ② ntary Boxite, Lithium, etc rock Geothermal effect/Crustal rising Soft Rock *1 ③ Coal - ※1 Coal is not defined as “rock” in geological respect. Generation process of IR-DAY2018 Mineral Resources (1/2) 3 • Minerals derived from magma were generated in the depths of underground. 1) In case deposits exist beneath and relatively near from ground level, Open Pit Mining/Strip Mining methods are adopted. 2) In case deposits exist in the depths below geological formations, Underground Mining methods are adopted. 3) Open pit mines might shift to underground methods as they get deeper. 1.Magmatic deposit 2.Hydrothermal deposit 1) Typical minerals: 1) Typical minerals: Platinum, Chromium, Titanium, Gold, Copper, Silver, Lead, Zinc, Tin, Magnetite, etc. Tungsten, Molybdenum, Uranium, etc. 2) Generation process 2) Generation process ・In case Magma is slowly cooled, ・Hydrothermal mineral solution melted metal sulfide (containing Platinum, (containing metal elements) had been Chromium, Titanium or others) had been pushed up by high vapor pressure, separated and concentrated by specific precipitated and filled chasms in and gravity and generated deposit. -
The Business of Mining
THE BUSINESS OF MINING Gordon L Smith Pr Eng, PhD Executive Head: Technical, Safety & Sustainability ANGLO AMERICAN PLATINUM LIMITED 1 AGENDA FOR THE MORNING 1. Introducing the Core Concept 2. The Platinum Value Chain 3. Platinum Geographic Landscape & Resource characteristics 4. Mining Methods • Design • Development • Capital Intensity • Technology 5. Drivers of Value 6. Conclusion 7. Consolidation: Interactive discussion of cost curves 2 THE CORE CONCEPT REVENUE WORKING COST PROFIT PROFIT CAPITAL NET CASHFLOW Tonnes Grade Recovery Productivity Project & SIB Capital Mining layout Process layout Technology & & Selection Design Design Orebody Characteristics • Geometry • Geometallurgy • Physical characteristics (dip, strike, width, depth, orientation) 3 PLATINUM VALUE CHAIN (MAPPING VIEW) MINERAL SCHEDULE DESIGN DEVELOP ORE MINE ROM RESOURCE MINERAL RESERVE STOCKPILE RESOURCE MINING CONCENTRATING SMELTING ACP MCP BMR PRODUCT TRANSFER to & STOCKPILE STOCKPILE STOCKPILE STOCKPILE (Base MARKETING Metals) CHROME PLANT CHROME PMR PRODUCT STOCKPILE PRODUCT (PGM’s) PROCESSING 4 Notes: ACP – Anglo Converter Process, MCP – Magnetic Concentrator Plant, BMR – Base Metals Refinery ANGLO AMERICAN PLATINUM VALUE CHAIN (Infographic View) Mining Concentrating Smelting Refining Products Polokwane Underground Open Pit Magnetic Concentration Plant (MCP) Waterval Underground Open pit • Amandelbult • Mogalakwena Mortimer Ni Cu • Unki Unki • Mototolo Cobalt Sodium • Modikwa JV Sulphate Sulphate • Kroondal JV Base Metals Refinery (BMR) 32.4ktpa refined Ni Amplats -
BLBA BULLETIN NO. 16-01 Issue Date
US. DEPARTMENT' OF LABOR Office ofW~rs· Compensation Programs Division of Coal Mine Worl<ers' Compensation Washington, DC 20210 BLBA BULLETIN NO. 16-01 Issue Date: November 12, 2015 Expiration Date: Indefinite Subject: Patriot Coal Corporation Bankruptcy. Background: On May 12, 2015, Patriot Coal Corporation and its subsidiaries filed for bankruptcy protection under Chapter 11. On October 9, 2015, Patriot received approval from the Bankruptcy Court to complete the sale of all its coal-mining operations. Patriot sold those operations to Blackhawk Mining and ERP Compliant Fuel, LLC (an affiliate of the Virginia Conservation Legacy Fund). Neither Blackhawk nor ERP is liable for federal black lung liabilities, except for those miners who continue to work for these companies after the sale. Patriot was authorized to self-insure its federal black lung liabilities as well as the liabilities of its subsidiaries in the States of KY, WV, n.,, IN, MO and PA. Some of Patriot's liabilities, however, are covered by commercial insurance policies. The Division of Coal Mine Workers' Compensation (DCMWC) has been notified that Patriot will no longer administer, defend, or pay claims after October 31, 2015. Applicability: Appropriate DCMWC Personnel Purpose: To provide guidance for district office staff in adjudicating claims in which the miner's last coal mine employment of at least one year was with one of the 50 subsidiary companies that have been affected by the Patriot Coal Corporation bankruptcy. Action: 1. Ensure no interruption of benefits for claims currently in approved/accepted status. For claims in approved/accepted status, claims examiners (CEs) will immediately place these claims into the Federal Black Lung Disability Trust Fund (BLDTF) by completing a Form CM-1261. -
As Filed with the Securities and Exchange Commission on May 5
As filed with the Securities and Exchange Commission on May 5, 2020 UNITED STATES OF AMERICA BEFORE THE SECURITIES AND EXCHANGE COMMISSION FIRST AMENDED AND RESTATED APPLICATION FOR AN ORDER PURSUANT TO SECTION 3(b)(2) OF THE INVESTMENT COMPANY ACT OF 1940, AS AMENDED, DECLARING THAT ARCH COAL, INC. IS PRIMARILY ENGAGED IN A BUSINESS OTHER THAN THAT OF INVESTING, REINVESTING, OWNING, HOLDING, OR TRADING IN SECURITIES In the Matter of ARCH COAL, INC. File No. 812-15085 Please send all communications to: Robert G. Jones, Esq. Arch Coal, Inc. One CityPlace Drive, Suite 300 St. Louis, Missouri 63141 (314) 994-2700 Nabil Sabki, Esq. Latham & Watkins LLP 330 North Wabash Avenue, Suite 2800 Chicago, Illinois 60611 (312) 876-7700 This Application (including Exhibits) consists of 22 pages. 1 UNITED STATES OF AMERICA BEFORE THE SECURITIES AND EXCHANGE COMMISSION In the Matter of FIRST AMENDED AND RESTATED APPLICATION FOR AN ORDER PURSUANT TO SECTION 3(b)(2) OF THE INVESTMENT ARCH COAL, INC. COMPANY ACT OF 1940, AS AMENDED, DECLARING THAT One CityPlace Drive, Suite 300 ARCH COAL, INC. IS PRIMARILY ENGAGED IN A BUSINESS St. Louis, Missouri 63141 OTHER THAN THAT OF INVESTING, REINVESTING, OWNING, HOLDING, OR TRADING IN SECURITIES. File No. 812-15085 I. SUMMARY OF RELIEF REQUESTED Arch Coal, Inc. (“Arch Coal” or the “Company”),1 a Delaware corporation listed on the New York Stock Exchange (NYSE: ARCH) with its principal executive office in St. Louis, Missouri, is one of the world’s largest coal producers. Arch Coal hereby files this amended and restated application (this “Application”) and applies for an order (the “Requested Order”) of the U.S.