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RI 2551 Distribution of Air in Metal-Mine Ventilation With Special Reference to Flexible Tubing Methods
By D. Harrington
"While distribution of air currents to working faces is a necessity in coal mines, especially those having explosive gas, advancing faces in metal mines rarely have circulating air other than the ordi
Nov 1, 1923
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RI 4818 Concentration Of Oxide Manganese Ores From Black Rock, Kramer, And Morgan Cromar Properties, Tooele And Juab Counties, Utah
By J. V. Batty
In the course of the investigation of manganese mineral occurrences in the United States, Bureau of Mines examining engineers collected several lots of ore from the Black Rock, Kramer, and. Morgan-Cro
Jan 1, 1952
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RI 4780 Concentration Of Oxide Manganese Ores From Lander County, Nev.
By T. F. Mitchell
As a part of the program of investigation of domestic sources of manganese ore, mining engineers of the Bureau of Mines examined and obtained samples of ore from two properties in the vicinity of Bett
Jan 1, 1951
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Bureau Of Mines Mineral Investigations In The Juneau Mining District, Alaska, 1984-1988 - Volume 2.- Detailed Mine, Prospect, And Mineral Occurrence Descriptions - Section A - Haines-Klukwan-Porcupine Subarea ? Introduction
By Jan C. Still
The Haines-Klukwan-Porcupine subarea of the Juneau Mining District (JMD) is located in the northern portion of the JMD and consists of the land between the Alaska-British Columbia boundary, the Chilko
Jan 1, 2012
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RI 6441 determining mine production schedules
By D. E. Redmon
Linear programing provides a mathematical technique by which activities can be planned in such a way that an optimal result is obtained. Routine applications of linear programing require only a knowle
Jan 1, 1964
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RI 3306 Progress Reports - Metallurgical Division - 12. Annual Report Of The Metallurgical Division, Fiscal Year 1935 ? Introduction
By R. S. Dean
The function of the Metallurgical Division is to conduct investigations relating to the treatment of mineral products from the state in which they are mined to the refined metal or other unfabricated
Jan 1, 1936
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Bulletin 163 Methods of Shutting Off Water in Oil and Gas Wells
By F. B. TOUCH
This bulletin deals with a topic that is exceedingly wide, and will doubtl~ be under consideration and discussion so long as there are enough known deposits of oil and gas remaining in the earth to ma
Jan 1, 1918
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IC 8666 Proceedings Of The Symposium On The Use Of Diesel-Powered Equipment In Underground Mining, Pittsburgh, Pa., January 30-31, 1973 ? Introduction
A symposium was held on January 30 and 31, 1973, at Pittsburgh, Pa., to review the state-of-the-art in designing and utilizing diesel-powered equipment in underground mining. The Health and Safety Act
Jan 1, 1975
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RI 9025 - Recovery of Vanadium, Uranium, and Phosphate From Idaho Phosphorite Ores
By J. C. Judd
The Bureau of Mines investigated the recovery of vanadium, uranium, and phosphorus from low-grade phosphorite ores and concentrate by leach-ing with H2S04. Samples containing 0.12 to 0.23 pct V20S, 0
Jan 1, 1986
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RI 6991 Lake Superior Iron Resources - Reexamination Of Nonmagnetic Taconite Occurrences In The Hibbing, Minn., Area By Flotation, Magnetic Separation, And Petrographic Methods
By L. F. Heising
Ten composite samples of Mesabi Range nonmagnetic taconite from the Hibbing, Minn., area were evaluated by flotation and by reduction roasting-magnetic separation to determine their potential as a fut
Jan 1, 1967
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RI 3225 The Flotation Of Alabama Graphite Ores
By B. W. Gandrud
The upper part of the Alabama deposits of crystalline graphite consists of an oxidized ore derived from the underlying unoxidized ore through prolonged Weathering. The degree of oxidation in different
Jan 1, 1934
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IC 7258 Strategic Mica ? Introduction
By G. Richards Gwinn
In modern warfare, mica is truly indispensable. Coordination of combatant units necessitates maintenance of intricate communications equipment, in the construction of which high-grade sheet mica is es
Jan 1, 1943
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RI 4464 Sheath Working Of Metal Powders
By J. R. Long
The investigations described herein are concerned with a portion of a systematic research, by the Federal Bureau of Mines on ductile titanium. The Bureau's work on the metal has resulted in devel
Jan 1, 1949
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IC 9295 Application Of Petrographic Techniques To Assess In Situ Leach Mining Potential
By Susan Brink
The U.S. Bureau of Mines is investigating the potential of in situ leach mining a variety of Cu, Mn, and Au-Ag ores. Geologic characterization of ore samples from laboratory leaching experiments is co
Jan 1, 1991
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RI 9473 Use of Oxygen-Enriched Gas for the Oxidation of Acid and Fluxed Taconite Pellets
By Larry A. Haas
The U.S. Bureau of Mines, in cooperation with Cleveland-Cliffs, Inc. (Hibbing, MN), investigated ways of enhancing the quality (compressive strength, after-tumble and reducibility) of domestic acid an
Jan 1, 1993
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OFR-33-82 Environmental Instrumentation In Mining Air And Water
By Richard C. Moore
The U.S. Bureau of Mines contracted a study to review the air and water monitoring requirements of five Federal environmental acts (the Federal Water Pollution Control Act, the Safe Drinking Water Act
Jan 1, 1981
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RI 2239 Losses In Aluminum and Aluminum-Alloy Melting
By Robert J. Anderson
"Introductory Statement:In melting the nonferrous metals and alloys for foundry and rolling-mill work, even with the best practice, there is always a loss, due principally to oxidation. Melting losses
Apr 1, 1921
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IC 7164 Mining Methods And Costs Of The Lava Cap Gold Mining Corporation, Nevada City, Calif. ? Introduction
By John W. Chandler
The property of the lava Cap Gold: Mining Corporation is in the Nevada City-Grass Valley mining district about 5 miles east of Crass Valley, Calif. At present (July 1940) the plant is mining end milli
Jan 1, 1941
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RI 9428 - High-Temperature Cyanide Leaching of Platinum-Group Metals From Automobile Catalysts-Process Development Unit
By R. J. Kuczynski
The U.S. Bureau of Mines operated a 2,000-g (4.4-lb) batch process development unit for recovering platinum-group metals (PGM) from automobile catalysts. Virgin monolith, used pellet, and used monolit
Jan 1, 2010
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RI 7411 Magnetic Roasting And Leaching For Upgrading Minnesota Manganiferous Iron Ores
By H. D. Jacobs
A process for recovering both iron and manganese from four manganiferous ores of the Cuyuna Range was evaluated. It comprised: (1) Low-temperature gaseous reduction to convert nonmagnetic iron mineral
Jan 1, 1970