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Evaluation of Pollution of Mining Areas in Aspect of their Future Use and Development
By D. J. Pyra, J. Kudelko, Korzekwam W.
Polkowice region (Lower Silesia, Poland) is an area, where the copper mining activity started about 40 years ago and new technologies were applied. There are 3 underground mines, 3 processing plants,
Jan 1, 2005
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Metal Separations Using Aqueous Biphasic Partitioning Systems
By D. J. Chaiko
Aqueous biphasic extraction (ABE) processes offer the potential for low-cost, highly selective separations. This countercurrent extraction technique involves selective partitioning of either dissolved
Jan 1, 1996
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OFR-3-84 Characterization Of Subsidence Over Longwall Mining Panels - Rocky Mountain Coal Province
By John E. Rourke, O&apos
This report documents the process of site selection, instrument installation, data acquisition, and preliminary data analysis followed to characterize the physical response of overlying strata to long
Jan 1, 1982
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OFR-200-82 Impact Of Proposed Lignite Mining In West Tennessee
By Richard G. Stearns
Extensive thick lignite apparently lies within 250 feet of the land surface in Dyer, Lake, Lauderdale, Obion and Tipton counties. Information on geology, land use, soils, groundwater and instability i
Jan 1, 1981
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OFR-8-75 One-Hour Self-Rescue Breathing Apparatus - Summary
By Yi-Shen Li
This report has been prepared by Lockheed Missiles & Space Company, Inc. (LMSC), under United States Bureau of Mines Contract No. H0220040 dated 21 June 1972 for the design, development, fabrication,
Jan 1, 1974
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IC 7436 Safety Catches on Mine Cages and Methods of Testing Them
By J. H. East, D. Harrington
"INTRODUCTION Shaft mines, coal and noncoal alike, have a common hoisting problem that remains largely unsolved - how to obtain a mechanical device that will suspend a cage or skip in a mine shaft if
Feb 1, 1948
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Radon barriers for underground uranium mine use
By James F. Archibald, H. Jame Hackwood
"Research was performed to assess the feasibility of barrier membrane substances, for use within mining or associated high risk environments, in restricting the diffusion transport of radon gas. Speci
Jan 1, 1987
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Los Angeles Tunnels Are Expanded With Help Of TBM Monitoring System
During the last 20 years, more than 80 km (50 miles) of tunnels have been constructed in the Los Angeles, CA area. Recent projects include The East Central Interceptor Sewer (ECIS), completed in 2004
Jan 1, 2008
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Analysis of results from a PFC measurement campaign
By P. Desclaux, A. Gosselin
"In 1999, PFC measurements were carried out at Alcan smelters as part of a large measurement campaign led by the Canadian Aluminium Association. Side worked prebake (SWPB) and horizontal stud Söderber
Jan 1, 2002
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The Critical Surface Tension Of Wetting Of Sulfide Minerals
By B. Yarar
The critical surface tension of wetting (?c) of Cu2S, FeS2, PbS, and MoS2 were determined by plotting flotation recovery versus YLV which was arranged by methanol, and Extra-polating to % R = 0. ?c v
Jan 1, 1983
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Earth Pressure Distribution On Diaphragm Wall During Excavation
By Ting Chinsu
Diaphragm wall with tie-back cable is widely used for deep excavation, especially in the area with high density of buildings. This paper presents the measured earth pressure distribution on diaphragm
Jan 1, 1991
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Formation Of Fe-Mn Crusts Under Conditions Of Strong Upwelling At A Continental Margin: Rodriguez Seamount, Offshore Central California
By James R. Hein
Rodriguez Seamount, located 150 km off the central California coast at the base of the continental slope, was studied using the ROV Tiburon aboard MBARI?s R/V Western Flyer, October 13-16, 2003. Fe-Mn
Jan 1, 2004
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Development of the automatic GO-60 drill
By R. England
"This paper describes the objectives and design parameters for the operation of a computerized In-The-Hole (I. T.H.) Drill. The principal objective is to add computer control to an Inco 00-60 I. T.H.
Jan 1, 1987
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Load Testing Of Deep Foundations Using The Osterberg Load Cell
By David E. Thompson
This paper describes the full-scale field load testing of three deep foundation units using the Osterberg Load Cell. The load tests were completed on three separate projects, two in Massachusetts and
Jan 1, 1989
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Cut-and-Fill Stoping at Star Mine
By Gordon Miner
GENERAL DESCRIPTION At the Star mine, Hecla Mining Co., located in Burke, Shoshone County, ID, the mining method is horizontal slicing (timbered or untimbered) cut-and-fill using hydraulic sand backf
Jan 1, 1982
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RI 3364 Progress Reports - Metallurgical Division - 21. Studies In Nonferrous Metallurgy - Collection Of Gold By Iron Abraded In Grinding (d06e5489-1966-46b8-a56e-0fc82121a907)
By S. R. Zimmerley
[In the course of a flotation investi£ation, a siliceous gold ore was ground in a'ball mill to ':1inns 300-meeh. It wa. found that the small amotIDt of _Ius 300-mesh material had a gole.. as
Jan 1, 1937
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Constancia Project Process Plant Design and Start Up
By David Stephenson, Hugo Granados, Steven Klohn
"HudBay’s Constancia project is a copper molybdenum concentrator located in southern Peru. In 2010 Ausenco was contracted to perform a feasibility study optimization review which resulted in an improv
Jan 1, 2016
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Mine Ventilation at Kiruna
By Lennart Mukka
The Kiruna Mine in Sweden currently has three ventilation systems. The first two (a new and old system) serve the production areas. The third system is used for the facilities on the former main hau
Jan 1, 2002
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A Protocol for Conducting Plant Trials Testing Grinding Media to Determine Recovery Improvements: The Ernest Henry Mine Plant Trial
By Allen Chung, John Twomey, Christopher J. Greet
"It is widely accepted that the type of grinding media has an impact on the grinding chemistry and subsequent flotation behaviour of the sulphide minerals being separated. There are countless laborato
Jan 1, 2011
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The Effect of Faults, Delay Time and Scaled Distance on Vibration Parameters
By Enver Alan, MerkeziYapı
People are migrating because of economic, social, natural and political reasons. These natural and humane factors effects the distribution of populations. The need for tunnels has grown in order to pr