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Have Aggregates - Will TravelBy B. J. Timmons
An initial point that I would like to make very emphatically?and as our title might erroneously suggest for those of you old enough to remember . . . Peter Harben and myself do not intend to shoot our
Jan 1, 1987
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Tungsten Recovery From Searles Lake Brines By Ion Exchange (141f22c2-415c-4572-a4b6-0342e8118cd2)By P. B. Altringer
The Bureau of Mines conducted laboratory tests to develop a process for recovering a marketable grade of tungsten from the brine of Searles Lake, Calif. The brine contains only 56 parts per million of
Jan 1, 1978
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Improvements In Loading And Hauling Equipment And The Effect On Unit CostsBy C. S. Davis
In being asked to present this paper on the improvements in loading and hauling equipment and the effect on unit costs, Mr. Van De Water, your program chairman, stated that his reason for coming to a
Jan 1, 1959
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The Application Of In-Seam Seismic Survey Techniques To An Ohio Coal MineBy Peter Jackson
Over a quarter of a century ago a New Zealand physicist suggested the possibility of detecting coal seam discontinuities by a seismic method carried out underground in the mine workings (Evison 1955).
Jan 1, 1984
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MDC’s Hartford, Connecticut South Tunnel Project: Integrating Site Investigation Technology, Geology and Geotechnical Engineering for Effective Ground CharacterizationBy Robin Dill, Wei Song, Andrew Perham, Leo Martin
"AECOM completed a subsurface exploration program for an 18-foot diameter, approximately 4-mile long rock tunnel project in Hartford, CT. The tunnel crosses the regional geologic trend through the mid
Jan 1, 2016
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Selecting Optimum Drilling Locations By GroupsBy Da-Rong Chou
An optimum method for selecting exploratory drilling locations has been developed. The process has been modelled as a highly non-linear programming problem subject to constraints. Solution involves an
Jan 1, 1984
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Nuclear Chemical Mining Of Primary Copper SulfidesBy Arthur E. Lewis
A contained nuclear explosion is proposed to produce a chimney of broken ore well below the water table. After the chimney is filled with water and reaches hydrostatic equilibrium, oxygen, under press
Jan 1, 1972
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Single Tube Versus Twin Tubes for Subway Systems - NAT2022By Mahmoud Sepehrmanesh, Verya Nasri
The purpose of this paper is to outline the advantages and disadvantages of single tube and twin tubes for subway systems. Different aspects such as diameter of the tunnel (tunnel spaceproofing), conf
Dec 1, 2022
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An Empirical Model Of Capture In A High Gradient Magnetic Separator And Its Use In Performance PredictionBy G. S. Dobby
High-intensity wet magnetic separators have been successfully introduced into the mineral processing field over the past ten to fifteen years, due largely to rapid advancements in magnet design. Wet m
Jan 1, 1977
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A New Method For Designing Support Area To Protect Surface Structures Over Underground Coal Mining AreasBy S. S. Peng
A well designed mining plan is one which minimizes the cost and the mining induced problems and maximizes the recovery of the coal reserve. In order to minimize the negative effects on surface structu
Jan 1, 1993
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Leaching Of Low Grade Gold Ores - Economic Evaluation Of Available Processes (5a856ec2-3f47-417b-8da8-c5dd7efc3a10)By F. Milton Lewis
Several alternatives are available for treating lover grade gold ores averaging 0.04 to 0.10 ounce per ton. These include heap, vat and agitation leaching and may involve conventional zinc precipitati
Jan 1, 1974
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Groundwater Problems At Uranium In Situ Leach Mining Operations In The Powder River Basin, Wyoming ? IntroductionBy Terry D. Vandell
The purposes of this presentation are: (1) to discuss the actual as well as potential incidents that have caused and that could cause groundwater contamination at uranium in situ leach mining sites an
Jan 1, 1981
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Thermochemistry Of The Fe, Ni And Co-NH3-H2O Systems As They Relate To The Caron Process: A ReviewBy E. Asselin
Passivation of Fe-Ni-Co alloys during the Caron leach process is thought to result in low cobalt recoveries in ammoniacal ammonium carbonate solutions. A brief review of the available thermochemical
Jan 1, 2011
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Thermochemistry Of The Fe, Ni And Co-NH3-H2O Systems As They Relate To The Caron Process: A Review (b124d2d6-d80c-4f42-bceb-b0ea6ac6b779)By E. Asselin
Passivation of Fe-Ni-Co alloys during the Caron leach process is thought to result in low cobalt recoveries in ammoniacal ammonium carbonate solutions. A brief review of the available thermochemical d
Nov 1, 2011
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The Technology And Performance Of The Hi-Capacity ThickenerBy R. C. Emmett
The industrial practice of concentration of solids and production of clear solution by gravity sedimentation is an old technology. Through the years, many devices have been designed and built to aid t
Jan 1, 1978
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Using Computerized Mine-Wide Monitoring For Ground ControlThe last decade has seen the use of powerful computerized Mine-Wide Monitoring (MWM) systems for detecting hazardous conditions in underground coal mines. Recently, the U.S. Bureau of Mines and Jim Wa
Jan 1, 1994
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Meeting The Challenge Of The 80's - Cost Reduction Measures At The Iron Ore Company Of Canada's Carol Project 1980-85By I. A. Tinto
Labrador City is located in the southwestern portion of Newfoundland-Labrador, approximately 965 kilometers north-east of Montreal. The mine and beneficiation complex of the Iron Ore Company of Canada
Jan 1, 1985
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3-D Modelling Of Mine Openings In SaltBy M. K. Rizkalla
This paper discusses the time-dependent behaviour of rock when it involves the presence of several layers of rock strata in the vicinity of mine openings, mining in sequences and the placement of back
Jan 1, 1996
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Evaluation of Rockburst Hazard by Accelerated Numerical Modeling of Stressed State and Induced Seismicity - RASIM2022By Liliana Rybarska-Rusinek, Aleksandr M. Linkov, Ewa Rejwer-Kosińska
Joined modeling of stressed state and induced seismicity is a means to join geomechanics with seismic observations. When applied to quantifying rockburst hazard, it provides, on one hand, estimations
Apr 26, 2022
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Handling Of Total Ore In A CCD Thickener CircuitBy O. J. Malacarne
The use of a series of thickeners for-washing of the slime fraction of a leached ore is not uncommon in the uranium industry; however, few ore processing mills have used a thickener circuit for washin
Jan 1, 1962