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A Study of the Flotative Properties of Magnetite
By W. E. Keck
THE flotative properties of the principal minerals in Michigan's potential iron ores have been investigated to develop methods of bene-ficiation for the ores. One of these minerals, magnetite, is
Jan 1, 1937
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RI 8047 Hydraulic Stimulation Increases Degasification Rate of Coalbeds (2a534c6d-5b5e-4a7f-a9fc-fcc183725e1c)
By C. H. Elder
Coal degasification boreholes drilled from the surface have been success-fully hydraulically stimulated to increase the flow of gas from the coal. This Bureau of Mines report describes the hydraulic s
Jan 1, 1975
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The Effects of Mining on the Geological Equilibrium at Leichhardt Colliery, Blackwater, Queensland
The paper describes the geology, structure, stress, gas and strata geomechanical properties for Leichhardt Colliery and their reactions to mining.
Jan 1, 1986
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The Trollhättan Electrothermic Zinc Process
By W. S. Landis
IN brief, this is the story of an attempt to Americanize a process originally developed in Europe. The story will be recited in two sections, the first dealing with the process as developed by the Eur
Jan 1, 1936
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Aplicación sistema electrónico edevtm en voladuras de avance subterraneo; minera Suyamarca
By Fidel T. Torres
El presente texto describe las pruebas con sistema de iniciación electrónica eDev, realizadas en Compañía Minera Suyamarca – Unidad Pallancata del Grupo Hochschild, las cuales se se desarrollaron dura
Sep 12, 2011
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Some Design and Operating Aspects of the Ranger Uranium Mine Treatment Plant
Environmental considerations were key factors in the design of the Ranger Uranium Mines treatment plant. The mine is located adjacent to the Kakadu National Park and has an average rainfall of 1.6
Jan 1, 1984
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Good Practice in Combatting Dust Hazards Associated with Mining Operation
By Donald Cummings
CERTAIN dusts are dangerous when inhaled, but most hazardous of all dusts are quartz or other forms of pure crystalline silica. The inhalation of dusts containing silica in combination with other elem
Jan 1, 1935
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Intragraben Fault Zones, Volcanism, and Geothermal Evolution in the Oregon-Idaho Graben, U.S.A. (cb62322a-c63b-484d-a72f-a99e158b5dcc)
The Oregon-Idaho graben evolved after widespread Uwleiitic flood basalt volcanism associated with the arrival of the plume head of the Yellowstone hotspot beneath southeastern Oregon approximately 17
Jan 1, 1995
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Probability-Assigned Constrained Kriging For Precious Metal Reserve Modeling
By G. Pan
The production data of many mines have not reconciled geostatistical estimations based on exploration and development drilling. The discrepancies in recovered metals are sometimes as large as 30%. A n
Jan 1, 1995
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U-Th Isotopes and the Generation of Magmas Along Destructive Plate Margins (bcde6e5e-471a-49e7-b99d-94310e26f3e6)
By Heath E, van Calsteren P, Turner S, McDermott F
U-Th isotope studies of recent volcanic rocks may be used to evaluate the depths and rates of melt generation beneath mid- ocean ridges and ocean islands. Island arc rocks exhibit a similar range in T
Jan 1, 1995
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Montreal (Annual) Paper - The Greene-Wahl Process for Manufacturing Manganese and Alloys of Manganese Free from Carbon
By F. Lynwood Garrison
There is probably no subject for study in the metallurgy of iron and steel of greater interest than the effect of manganese upon the properties of iron. Some of the peculiarities of iron and steel con
Jan 1, 1893
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Technical Aspects of Underground Exploration at Lady Loretta
By Mitchell G. W, Purvis A. H
The Lady Loretta silver-lead-zinc deposit lies north of Mount Isa in folded and faulted Proterozoic carbonate sediments. The deposit was discovered in the late 1960's as a result of a soil geo
Jan 1, 1988
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Implications of Trends in Base Metals and Gold Financing, and Acquisitions Activity
By Michael Chender
Emerging Equity Sources ? Larger IPOs ? China Inc. ? Other sovereign wealth funds ? New funds and higher allocations ? Private equity
May 1, 2010
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Recent Technology in the Tank House at Tamano Smelter
By Oda Y, Hashiuchi M
In the smelting section, flexible fuels such as coal or coke are used in place of heavy fuel oil in order to utilize energy sources more efficiently. Heat recovered from the off gas of the furnace
Jan 1, 1987
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Stability of Underground Coal Mine Openings and Structures with Particular Reference to Vibrations from Surface Mine Blasts
By Prakash AJ, Singh PK, Dhar BB
Safety and stability of underground mine openings, coal pillars and water dams in the near vicinity of operating surface mines are endangered from excessive blast induced vibrations. This paper deal
Jan 1, 1995
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RI 9204 - Chromium Recovery From High-Temperature Shift Cr-Fe Catalysts
By A. M. Stubbs
The Bureau of Mines has devised a procedure to selectively extract and recover chromic oxide (Cr203) from waste high-temperature shift catalysts that contain approximately 6 pct Cr and 62 pct Fe, both
Jan 1, 1988
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High-Si Rhyolites and Shoshonitic Volcanics
The transgressive sedimentary sequence of the Notnnea Basin contains rhyolitic lavas and less voluminous mafic and intermediate volcanims of shoshonitic affinities which erupted simultaneously during
Jan 1, 1995
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Peak Particle Accelerations Induced by a Decked Column of Explosives
By Baird G. R, Jurak R. N
In this study Dynamic Finite Element Modelling is used to investigate the distribution of peak particle accelerations (PPA) induced in a rock mass by a vertical decked column of explosives. The rock
Jan 1, 1995
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Phytoremediation In Areas Contaminated With Heavy And Radioactive Metals
By C. Vasilescu
Phytotechnologies use plants to remediate various media impacted with different types of contaminants. These technologies can be implemented either in situ or ex situ. The affected media in which phyt
Jan 1, 2006
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Leaching of Gold-Copper Ores Using Ammoniacal Cynide
By Corrans I. J
A wide variety of copper-bearing gold ores exist throughout the world which have yet to be processed economically for gold recovery. The copper minerals present in these ores can be many and varied
Jan 1, 1992