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Exploratory Shaft Design For The Salt Repository Project
By S. A. G. Poppen, M. B. Mirza, A. I. Cooley
The U.S. Department of Energy (DOE) is responsible for siting and constructing a licensed geologic repository for commercially generated high-level nuclear waste. Within DOE, the Office of Civilian Ra
Jan 1, 1987
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Inner City Slurry Tunneling—Project Asdam, Antwerp, Belgium
By Klaus Rieker
North of Antwerp central train station, two single-track tunnels for the high-speed train line between Brussels and Amsterdam were constructed. At the same time, the central train station was modified
Jan 1, 2007
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The Regulation of Subsidence and Underground Coal Mining in Illinois
By Paul J. Ehret
With the passage of the Surface Mining Control and Reclamation Act (SMCRA), and the implementation of state permanent programs, underground coal mining operations are for the first time subject to gov
Jan 1, 1986
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Recycling Power Plant Fly Ash And Its New Application For Construction Materials - Preprint 09-037
By N. S. Kim
Economically favored Cr and Cu leaching out process from spent power plant fly ash (PPFA) had been investigated. PPFA, bearing of C, S, V, Ni, Cu and Cr, has been widely used as an assistant fuel in c
Jan 1, 2009
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Connectionist Approach For Modeling The Dry Roll Magnetic Separator
Magnetic separation is an age-old technique for mineral beneficiation operations. The existing mathematical models for magnetic separators are quite complicated, and it is very difficult to measure th
Jan 1, 2009
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Why Do Some Passive Treatment Systems Fail While Others Work?
By J. J. Gusek
There are hundreds of passive treatment systems accepting mining influenced water (MIW) throughout the world. Some systems do not perform to design expectations while others, including volunteer syste
Jan 1, 2002
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Mining Lawyers Meet, Mark a Half Century of Work
By Tim O’Neil
Question: Looking forward, do we face a future in which energy markets, energy policy and energy conflicts threaten to preoccupy, if not dominate, our concerns over economic growth, national security
Jan 1, 2004
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Colorado Miners Discuss Challenges of the New Century
By Steve Kral
The mining industry in Colorado faces the same problems the industry faces throughout the United States and the world — record low commodity prices and increasing regulatory and environmental restrict
Jan 1, 2000
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Installation Of 0.84 M (33 In) Cyclones On The Primary Grinding Circuit At Cyprus Sierrita Corporation
By L. N. Hill
The classifiers on the primary grinding circuit at Cyprus Sierrita have been upgraded from 0.66 m (26 in) diameter hydrocyclones to 0.84 m (33 in) diameter hydrocyclones. This has resulted in a 4.3 %
Jan 1, 1994
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Efficient Separation of Trace Muscovite within the Surface/Interface of Quartz Grains from a Hydrothermal Deposit by Oxidizing Calcination and Catalytic Pressure Leaching Mining, Metallurgy and Exploration
By Xun Zhang, Hang Qiu, Andrea R. Gerson4, Shaomin Lei, Yubiao Li, Yu Meng, Zhenyu Pei, Min Lin
Efficient separation of trace muscovite from the surface/interface of quartz grains was accomplished during oxidizing calcination and catalytic pressure leaching of the hydrothermal quartz. Experiment
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Reproducibility Of Bond Work Index With Different Standard Ball Mills
By P. C. Fletcher, E. Kaya
The Bond grindability testing procedure has been standardized to measure the same grindability values, i.e. Bond work index (BWi), for the same ore when tests are performed in different laboratories o
Jan 1, 2002
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Caterpillar 5090B Offers Higher Loading Capacity
By Tim O’Neil
Caterpillar has introduced its 5090B front shovel, to work with 40 to 70 st (36 to 63 t) trucks. The new unit replaces Cat’s 5080 hydraulic excavator. The 5090B offers more engine horsepower, higher
Jan 1, 2003
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Mining Foundation of the Southwest Honors 2002 Inductees
The 20th annual American Mining Hall of Fame Awards Banquet sponsored by the Mining Foundation of the Southwest will be held at the Westin La Paloma in Tucson, AZ, on Saturday, Dec. 7, 2002. This y
Jan 1, 2002
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Thermodynamic Analysis Of Gold Leaching By Ammoniacal Thiosulfate Using Eh/Ph And Speciation Diagrams (1b00c1b6-1d3c-49da-aa8d-881dd0b4bd68)
By D. M. Muir
Thiosulfate offers a non-toxic alternative to cyanide for processing gold ores. The mechanism of leaching gold using ammoniacal thiosulfate solution is driven by the Cu(II)-Cu(I) redox couple and is c
Jan 1, 2001
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Investigation On The Leaching Of Pyrite In A Germ-Free System
By L. Ou
This paper reports on research on leaching pyrite in a germ-free system. The effects of mineral particle size, pulp potential and various oxidation agents on pyrite leaching were studied. The results
Jan 1, 2007
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Analysis of Fall-Related Imminent Danger Orders in the Metal/Nonmetal Mining Sector Mining, Metallurgy and Exploration
By Mahiyar Nasarwanji, Jonathan K. Hrica, Jonisha P. Pollard, Lydia M. Kocher, Brianna M. Eiter
Within the metal/nonmetal mining sector, fall-related incidents account for a large proportion of fatal and non-fatal injuries. However, the events and contributing factors leading up to these inciden
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Feasible Bioprocessing Technologies for Low-Grade Iron Ores
By H. X. Li, A. Correa, M. M. Zhang, W. Xuan, M. Andrade
"With increasing demand for steel and depletion of high-grade iron ore deposits, more research efforts are being directed toward extending the life of existing ore reserves and developing technology t
Jan 1, 2015
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Elm Road Generating Station Water Intake Tunnel
By Brendan Reilly, Jon Isaacson, Paul McDermott
Kenny/Shea JV is constructing the water intake tunnel for the new Elm Road Generating Station, a supercritical coal-fired power plant in Oak Creek, Wisconsin, being built by Bechtel Power Corporation.
Jan 1, 2007
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Identification And Enumeration Of Asbestos Fibers In The Mining Environment: Mission And Modification To The Federal Asbestos Standard
By Arthur M. Langer
Since the promulgation of the first Federal Asbestos Standard by the Occupational Safety and Health Administration in 1972, other federal agencies have modified the standard to better carry on their
Jan 1, 2008
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The Arizona Copper Province And The Texas Lineament
By Jacques B. Wertz
Recurring movements remotely connected with the Murray fracture zone and the San Andreas fault complex, together with the slow northwestward drift affecting the Baja California peninsula, could progre
Jan 1, 1970