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RI 5754 Removing Quartz And Other Impurities From Refractory Clays By Mineral Dressing Methods ? Introduction And Summary
By W. A. Calhoun
The purpose of this investigation was to develop economical mineral dressing processes for removing objectionable quantities of impurities, such as quartz and pyrite, from refractory clay deposits in
Jan 1, 1961
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IC 8500 Availability Of Tungsten At Various Prices From Resources In The United States
By L. P. Larson
In this Bureau of Mines evaluation of the domestic supply position of tungsten, certain tungsten resources in the United States are estimated as to quantity and grade and then are systematically coste
Jan 1, 1971
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RI 9077 - Acoustic Emission Monitoring of Fracture Development
By Sterling J. Anderson
Through the use of nondestructive testing techniques, the Bureau of Mines is pursuing a goal of improving the efficiency of the rock excava-tion process. Toward this end, 44 laboratory tests were cond
Jan 1, 1987
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IC 8568 Coal Mine Health Seminar - A Joint Staff Conference Of The Bureau Of Mines And The National Institute For Occupational Safety And Health
Senior staff representatives of the Bureau of Mines and the National Institute for Occupational Safety and Health (NIOSH) met in Washington on September 6, 1972, to review and evaluate their cooperati
Jan 1, 1972
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RI 3480 Progress Reports - Metallurgical Division - 34. Annual Report Of The Metallurgical Division, Fiscal Year 1939 ? Introduction (f8adc79d-0782-459e-ad3a-6ff2d4c4a06e)
By R. S. Dean
[During t!~c past f isc.~l y~:-.r the Xetzllvz-gicd 3ivi oion has made im- portant contribution-, don,- tlie lines rlictnteil by the Bureau policy of con- servation of domestic rnker~l rcsoul-ces thro
Jan 1, 1940
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Effects Of Posture On Dynamic Back Loading During A Cable Lifting Task
By Kermit G. Davis, Sean Gallagher, William S. Marras, Kimberly Kovacs
This study evaluated spinal loads associated with lifting and hanging heavy mining cable in a variety of postures. This electrical cable can weigh up to 10 kg per metre and is often lifted in restrict
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RI 2700 Present Status of Differential Flotation
By A. W. Fahrenwald
"The rate of progress in the last three years in the development of differential flotation has been rapid beyond the realization of most people. Differential flotation is no longer a ""delicate"" and
Aug 1, 1925
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RI 3651 Manganese Investigation - Metallurgical Division 15 Hydrometallurgical Studies of Manganese Ores - Electrodeposition of Manganese
By David Schlain
"IntroductionThe purpose of this investigation was to study the characteristics of the high-acid electrolytic manganese cell with the idea of fitting it into one of the flow sheets being worked out by
Jul 1, 1942
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Mistakes, Misconceptions, And Key Points Regarding Secondary Roof Support Systems
By Thomas M. Barczak
Roof support systems are necessary to provide stable mine openings and much research has been conducted to design a variety of roof support systems that will function in various manners to ensure that
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IC 8065 Conversion Of Coal To Fluid Fuels: Abstracts Of Selected German Patent Applications ? Introductions And Summary
By Ignaz Lichtig
[IN CONNECTION with its work on the conversion of coal to liquid cud gaseous fuels,3 the Bureau of Mines has always striven to keep informed of developments in this and related fields so that unnecess
Jan 1, 1961
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IC 8902 A Review Of Methods For Identifying Scrap Metals
As part of the Bureau of Mines program for conserving domestic mineral resources, a survey was made of the methods used for identifying scrap metals. Because of the large number of alloys currently be
Jan 1, 1982
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IC 8214 Mining Methods And Costs, Kimballton Limestone Mine, Standard Lime And Cement Co., Giles County, Va. (2623a3d0-de46-4894-874c-ca03cb96c17f)
By N. A. Eilertsen
Procedures of mining high-calcium limestone underground at the Kimballton mine of the Standard Lime and Cement Co. in Giles County, west-central Virginia, are described. Drilling and blasting procedur
Jan 1, 1964
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IC 8182 Sandstone As Dimension Stone
By Oliver Bowles
Sandstone, a widely distributed siliceous sedimentary rock, is the third most popular building stone in the United States. It is formed by the breaking down of preexisting rocks by weathering, subsequ
Jan 1, 1963
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RI 9314 - Pressure Leaching of Galena Concentrates To Recover Lead Metal and Elemental Sulfur
By Agnes Y. Lee
As part of the U.S. Bureau of Mines program to improve base metal leach systems, pressure leaching of galena (PbS) concentrates in fluosilicic acid (H2SiF6) solution was investigated. Lead extraction
Jan 1, 1990
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OFR-4(2)-72 Industrial Engineering Study Of Hazards Associated With Underground Coal Mine Production - Volume II - Data And Charts ? I. Introduction
Presented in this volume are the basic mining techniques and production operations associated with underground bituminous coal mining. Chapter 2, "Multiflow Process Charts", presents, in sketch fo
Jan 1, 1971
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IC 8746 Safety Recommendations For Ammonium Nitrate-Based Blasting Agents - Revision Of Information Circular 8179
By G. H. Damon
Since 1963, Bureau of Mines Information Circular 8179 has served the mining industry as a fundamental safety guide in the field of blasting agents. In the intervening 14 years, many changes have occur
Jan 1, 1977
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RI 6011 Disposal Of Radioactive Waste In The Vitro-Type Uranium Milling Flowsheet ? Summary
By K. E. Tame
Pollution from radioactive nuclides, principally Ra226, in liquid waste from uranium mills can be minimized by reusing the waste solution within the mill. Such reuse of waste solution in the Vitro Che
Jan 1, 1962
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RI 8730 Sealing Openings in Abandoned Mines by Pneumatic Stowing
By Slavoljub D. Maksimovic
The Bureau of Mines, through a memorandum of agreement with the State of Ohio, tested a method of constructing seals in abandoned mine openings in Ohio by means of pneumatic stowing of crushed limesto
Jan 1, 1982
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IC 7926 Placer Mining In Alaska - Methods And Costs At Operations Using Hydraulic And Mechanical Excavation Equipment With Nonfloating Washing Plants ? Summary And Introduction
By Bruce I. Thomas
[THIS PAPER, tine of a series on placer ml n in iii Alaska, describes mining methods and gives unit costs at operations where hydraulic and mechanical excavation equipment is used with nonfloating was
Jan 1, 1959
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RI 5946 The Performance And Operating Characteristics Of An Image Furnace Having 60-Inch Paraboloidal Mirrors ? Summary
By Edwin E. Maust
In response to the ever- increasing demand for high temperature materials, the Bureau of Mines instituted a program for the study and development of superrefractories, One of the major tools obtained
Jan 1, 1962