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Foliation Thickness and Mica Grain Size: Two New Ways to Subdivide the Otago Schist, Zew ZealandAt a regional scale, the Otago Schist has been divided into textural zones, metamorphic zones, structural transposition zones, and terranes and lithologic associations. Each of these subdivisions reve
Jan 1, 2001
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Evaluation of some optimum moisture and binder conditions for coal fines briquettingBy P. Venter, N. Naude
"Coal mining is a thriving industry and 53% of the coal mined in South Africa is used for electricity generation. Mechanization has made coal mining more efficient, but fines generation has subsequent
Jan 1, 2015
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Review Of The Development Work On The Mintek Thermal Magnesium Process (MTMP) - SynopsisBy M. Abdellatif
The Mintek Thermal Magnesium Process (MTMP) process is based on DC open arc metallothermic smelting of calcined dolomite at normal pressure and temperatures of 1650?1750°C. The process was demonstrate
Jan 1, 2011
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RI 4744 A Thermal Decomposition Study Of Colorado Oil ShaleBy Arnold B. Hubbard
A thermal decomposition study of the kerogen in three Colorado oil shales was made at different temperatures by heating the shales in the absence of oxygen at atmospheric pressure and measuring the de
Jan 1, 1950
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IC 8118 Thickness Of Bituminous Coal And Lignite Seams Mined In 1960 ?SummaryBy W. H. Young
The thickness of the coal seam is one of the more important items influencing the productivity and general overall efficiency of operation of a coal mine. The average thickness of coal seams mined in
Jan 1, 1962
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Earthing practice in metalliferous mining: results of study at Mount Isa mine, Queensland, AustraliaBy R. Sankey, L. Gatty, F. Bizzozero, G. F. Shannon, F. Savaglio, L. McDonald
State mining regulations in Queensland stipulate that a mine be provided with an earth installed on surface and that all underground equipment that needs to be earthed should be connected via a copper
May 1, 1991
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Minimum variance or maximum profitability?By R. Mohan Srivastava
"The goal of estimation is considered in the light of decision analysis. A simple example reveals the essential elements of decision-making in the face of uncertainty. A second example shows that thes
Jan 1, 1987
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Minerals Policy Review UpdateTo George Orwell the year of 1984 was the inspiration for a book. To most New Zealanders it was the year that the fourth Labour Government was elected to power. It was also the year that the review of
Jan 1, 1987
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IC 6702 Mining Laws of LuxembourgBy E. P. Youngman
This digest, based upon a translation" of certain portions of the 1930 law, covers the pertinent points of what has been termed "The New Mining Law of Luxemburg," the Grand Ducal Order (Arrêté) of Apr
Apr 1, 1933
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IC 6739 Milling Methods And Costs At The Golden Cycle Mill, Colorado Springs, Colo. ? IntroductionBy L. S. Harner
This paper which describes the milling practice at the Golden Cycle mill is one of a series of similar papers being prepared by the United States Bureau of Mines. The mill of the Golden Cycle Corp
Jan 1, 1933
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Continuous pH and Pulp Potential Measurements During Complex Sulfide Ore FlotationContinuous pH and Pulp Potential Measurements During Complex Sulfide Ore Flotation
Sep 13, 2010
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RI 7148 Beryllium Resources Of Idaho, Washington, Montana, And OregonBy Eldon C. Pattee
Reconnaisance samples of reported beryllium occurrences in Idaho, Washington, Montana, and Oregon were chemically and spectroscopically tested in a mobile laboratory. The two predominant types of occu
Jan 1, 1968
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Good Organization Is Making Records at the Hooper TunnelBy W. F. Boericke
AT Kellogg, Idaho, J. Fred Johnson is driving the 5000.-ft Hooper Tunnel under contract for the Bunker Hill & Sullivan Mining Co. This was visited by a group of engineers during the recent meeting of
Jan 1, 1930
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RI 8906 - Electrochemical Determination of Thermodynamic Properties of Bismuth Sesquioxide and Stannic OxideBy Seth C. Schaefer
The Bureau of Mines investigated the thermodynamic properties of Bi203 (bismuth sesquioxide) and Sn02 (stannic oxide). Standard Gibbs energies of formation (AGfO) of these compounds were determined wi
Jan 1, 1984
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Stress Variation on Longwall Powered Supports in Upper Seam due to the Presence of Old Mined Out Workings in Lower SeamBy Vedala Sastry
Longwall mining for coal extraction in deeper deposits is gaining momentum in India, due to the increasing stripping ratios and depletion of shallow deposits amenable for surface mining. In longwall
Jan 1, 2007
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IC 8081 Proposed Standardization Of Coal Mine Examination Records ? Introduction And SummaryBy Harry A. Schrecengost
The Bureau of Mines has found considerable lack of uniformity in style and content of record books used for reporting the results of examinations made by coal-mine officials. These books range from el
Jan 1, 1962
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The Products of Boiling Hydrothermal Fluids in the Golden Cross Epithermal DepositBy M P. Simpson, J L. Mauk
The Golden Cross, low-sulfidation, epithermal deposit shows a number of features that are directly or indirectly related to boiling hydrothermal fluids. Occurrences of lattice calcite and their quartz
Jan 1, 2000
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Using Machine Carousel To Reduce Cladding Support Cycle At Pk2 Ventilation Shaft (311f8feb-63e6-4d23-980e-900e4671e984)By Braam Blom
PK2 Ventilation shaft is part of Paardekraal No 2 twin shaft system that is being developed to replace depleting Merensky reef production at Paardekraal shaft complex. The sinking team at this shaft f
Jan 1, 2009
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Beneficiation of Syrian Iron Ore for DRI - Production - An Exploratory StudyBy Gupta R. C
Syria has about 500 million ton deposit of minerals having 34 per cent iron content with alumina and silica as major impurities. Efforts were made to see the feasibility of concentration by four dif
Jan 1, 1999
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Electrowinning of Copper at High Current DensitiesThe maximum current density at which conventional copper electrowinning plants will result in satisfactory, adherent, and dendrite·free cathodes is determined by the thickness of the diffusion bo
Jan 1, 1972