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Rich Hill, Arizona: Historic Gold District, Modern Gold Rush
By Erik Melchiorre, M. Katherine Crombie, Dante Lauretta, Chris Gholson
Rich Hill, also known as Weaver District No. 2, is among the most productive placer gold locations in Arizona. Located near Congress, AZ (Fig. 1), this district hosted major placer rushes in the 1860
Jan 1, 2003
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General Legal Conditions for Land Reclamation
By K. Freytag
The extraction of lignite in open-cast mines has a severe impact on the landscape. Proper landscaping after the shut-down of the mines has always been the statutory responsibility of the mine operator
Jan 1, 2005
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Micro Tunneling 1.2-Mile, 72-In RCP With Crossings Of NJ Turnpike And CSX Railroads
By Zhenqi Cai
The ongoing Overpeck Valley Parallel Sewer Project of Bergen County Utilities Authority (BCUA), New Jersey, is a US $65 million CSO improvement program to meet a State DEP consent order by 2010. One m
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Thermal oxidation of coal mine ventilation air methane
By J. M. Somers
Methane is a powerful greenhouse gas and the principal component of natural gas. Coal seams often contain significant quantities of methane, and underground coal mines must ensure that methane release
Jan 1, 2009
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Two Tunnels in Totally Different Geological Formations Driven by the Same 7M Double-Shield TBM with an Extremely Thin-Walled Monoshell Honeycomb Segmental Lining System
By Wolfgang Guetter, Wolfgang Weber
The upgrading project for two hydropower plants in Slovenia, Europe, requires two new pressure tunnels: Plave II (5.9 km Flysch) and Doblar II (3.6 km Limestone). It is the worldwide largest applicati
Jan 1, 2001
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Block Craving - General Description
By Ray L. Tobie, Douglas E. Julin
GENERAL DESCRIPTION Block caving is a distinct caving method applied mostly to large, massive, ore bodies because of its in¬herent low cost and high production capabilities. Areas of sufficient siz
Jan 1, 1982
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Excess Spoil Minimization And Fill Stability
By M. Superfesky, P. Michael
Introduction The US Office of Surface Mining (OSM) is proposing changes to the Code of Federal Regulations in the interest of minimizing the adverse effects of excess-spoil-fill construction on the
Jan 1, 2007
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Government and Miners Meet to Increase Indian Exploration and Mining
By Andrew E. Nevin
The government of India convened a precedent-setting meeting in New Delhi on Nov. 12, 2001.The meeting brought together regulators and the mining industry in an attempt to fix the industry’s mine deve
Jan 1, 2002
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Sustainable Change of Coal-Mining Regions Mining, Metallurgy and Exploration
By Jürgen Kretschmann
According to the model of product life cycles, the global coal mining industry is in the stagnation phase. The coal demand of the main consumer, China, has peaked in 2013 and is slowly declining. The
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Geologic Data Collection and Assessment Techniques in Coal Mining for Ground Control
By Mark Van Dyke, Ted Klemetti, Joe Wickline
"The identification and mitigation of adverse geologic conditions are critical to the safety and productivity of underground coal mining operations. To anticipate and mitigate adverse geologic conditi
Jan 1, 2019
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Recycling for the recovery of critical metals from LiCoO2 cathode material through methanesulfonic acid-citric acid organic leaching system
By Jaeheon Lee, Junmo Ahn, Jae-Yeon Kim, Yoo-Jin Kim, Jiajia Wu, Eun-Woo Kim, Jai-Won Byeon, Jun-Jae Lee
The surge in demand for battery materials, coupled with environmental challenges linked to battery disposal, underscores the need to recycle spent lithium-ion batteries (LIBs). Green recycling approac
Feb 1, 2024
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Collaborative Strategic Research Initiatives: Their Benefits and Best Practice Approaches for Establishing the Same
By Daniel Brutto
"Environmental considerations are a key driver within marine mining consenting processes across different national and international legislative regimes and are critical in shaping the global public p
Sep 1, 2014
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Evaluation Of Phosphate Depressants In The Phosphate/Silica System
By P. Zhang
The use of phosphate depressants in the cationic flotation of silica from francolite in the Florida phosphate industry is rarely practiced. The occasional use of gelatinized starch derivatives and pH
Jan 1, 2009
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Cellular Acclimation Of Acidithiobacillus Ferrooxidans To Sulfur Biooxidation
By C. -G. Zhang
This paper presents the results of a study on cellular acclimation of Acidithiobacillus ferrooxidans to sulfur biooxidation in terms of cells growth and changes in surface properties and morphologies
Jan 1, 2009
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Design and construction of a surface air cooling and refrigeration installation at a South African mine
Impala Platinum?s No.16 Shaft mine is currently under construction and is expected to reach full production of 256 500 tons per month by 2014. Mining will start at 1 260 m below surface with a maximum
Jan 1, 2009
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An Overview Of Gemstone Production In The United States
By G. T. Austin
This is an overview of the gemstone industry with special attention on particular states within the united states. The U.S. Bureau of Mines, Department of the Interior compiled and analyzed the inform
Jan 1, 1995
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Boart Longyear Coring Bits Pass Field Tests
Using mines in Canada, Boart Longyear, a leading provider of drilling services and products, has put its Stage 3 Coring Bit to the test and each time the bit has passed the test with great success. A
Jan 1, 2009
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Predicting Oxygen Run-Out Times Of Self-Contained Self-Rescuers – Preprint 97-119
By N. I. Aziz, I. Tague, P. Mackenzie-Wood
The recent mine disasters in Australian coal mines have initiated an introduction of Self-Contained Self-Rescuer (SCSR) as component in the development of new escape strategies for miners. These self-
Feb 24, 1997
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Small footprint, big challenges: Design and construction of the Allen Park storage tunnel
By Brain E. Gombos
The Allen Park Sanitary Sewer Overflow (SSO) Tunnel and relief sewer project, located in the city of Allen Park, MI, is a long-term corrective action designed to bring Sanitary District One?s sanitary
Jan 1, 2013
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A Century of Research Leading to Understanding the Scientific Basis of Selective Mineral Flotation and Design of Flotation Collectors Mining, Metallurgy and Exploration
By Douglas W. Fuerstenau, Pradip Pradip
The design and development of selective flotation collectors has been the key to the remarkable success of flotation in beneficiating complex, difficult-to-process ores. Sustained research efforts in