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RI 8096 Free Energies of Formation of Ferrous and Ferric Fluoride by Electromotive Force MeasurementsBy Seth C. Schaefer
The Bureau of Mines studied the standard free energies2 of formation of ferrous fluoride (FeF2) and ferric fluoride (FeF3) with high-temperature galvanic cells employing calcium fluoride doped with 1
Jan 1, 1975
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IC 7694 It Couldn't Happen (A Description Of Five Unusual Fatal Mine Accidents)By D. S. Kingery
This study describes five fatal accidents so unusual in occurrence that the chain of circumstances bringing them about may never be duplicated. The intent of this publication is to illustrate that eve
Jan 1, 1954
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Recovering Precious Metal Values From Finely-Ground Tailing Material - ObjectiveProvide a means of recovering precious metal values from finely ground tailing materials. Approach Determine the procedures needed for agglomerating the finely ground material for subsequent h
Jan 1, 1986
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RI 2128 Sulphur Dioxide as Factor in Smoke Problem, Salt Lake CityBy G. St John Perrott
"The United States Bureau of Mines is cooperating with the State of Utah and the City of Salt Lake in an investigation of methods of abating the smoke nuisance in Salt Lake City. In the course of this
May 1, 1920
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A Statistical Treatment for Quantitative SEM-EDS Analysis as Applied to Automated Analysis of Many ParticlesBy T. F. Dumm, L. G. Austin
"INTRODUCTIONGomez and Austin (1,2) have recently described calibration procedures for quantitative chemical analysis of particles by energy dispersive spectroscopy using particles mounted and polishe
Jan 1, 1989
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RI 4694 Investigation Of The Cove Meadow Copper Deposit, Humboldt County, Nev.By Russell R. Trengove
The Bureau of Mines developed by core drilling the Cove Meadow copper property, also known as the Patterson property, from May 6, 1949, to August 6, 1949. It is in the Cove Meadow mining district, nor
Jan 1, 1950
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Production Of High-Purity Synthetic Rutile From A Domestic Ilmenite ConcentrateBy Gerald W. Elger
A new process under development by the U.S. Bureau of Mines for producing synthetic rutile from ilmenite is described. Rutile formation is based on oxidation and fluxing of titania slag produced by el
Jan 1, 1971
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RI 3302 Microcolorimetric Determination Of Benzene In Blood And Urine ? IntroductionBy S. J. Pearce
The need for a simple, very sensitive, and accurate method for the determination of benzene in blood and urine vas evident throughout a recent study of chronic benzene (C6H6) poisoning conducted coope
Jan 1, 1936
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RI 8543 Behavior of Cadmium During Roasting of Zinc ConcentrateBy Arne Landsberg
The Bureau of Mines has undertaken research to elucidate the chemistry involved in the efficient recovery and control of minor elements in base metal smelting operations. These elements should be effe
Jan 1, 1981
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RI 4661 Investigation Of The Winterboro Talc Deposits, Talladega County, Ala.By Jr. Reed
The only known large deposits of talc in Alabama occur near Winterboro, Talladega County. Preliminary examinations were made, and work by the Bureau of Mines was recommended. The deposits were invest
Jan 1, 1950
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IC 6322 Mining Methods And Costs At The Teck-Hughes Gold Mines (Ltd.), Kirkland Lake, Ontario ? IntroductionBy R. J. Henry
This paper describing the mining practices at the Teck-Hughes mines at Kirkland Lake, Ontario, is one of a series being prepared by the United States Bureau of Mines on mining practices, methods, and
Jan 1, 1930
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Noise Assessment Of Stone/Aggregate Mines: Six Case StudiesBy D. R. Babich, E. R. Bauer
The U.S. National Institute for Occupational Safety and Health (NIOSH) is conducting a cross-sectional survey of equipment sound levels and worker noise exposures in the stone/aggregate mining industr
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RI 5214 Zirconium Purification, Using A Basic Sulfate Precipitation ? SummaryBy R. H. Nielsen
A new, cheaper precipitation scheme has been developed to produce purified zirconium oxide, Technical-grade sulfuric acid is used to precipitate a basic zirconium sulfate from a hot dilute hydrochlori
Jan 1, 1956
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RI 4405 Effect Of Operating Variables Upon The Fischer-Tropsch SynthesisBy Sol Weller
The Fischer-Tropsch synthesis consists of the formation of long-chain hydrocarbons by passage of carbon monoxide-hydrogen mixtures over metal catalysts, usually based on iron, cobalt, nickel, or ruthe
Jan 1, 1949
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RI 8619 Removal of Organic Contaminants From Aluminum Chloride SolutionsBy Jack C. White
The Bureau of Mines, in its efforts to insure the continued viability of the domestic minerals economy, has been engaged for several years in research on the extraction of alumina from domestic, nonba
Jan 1, 1981
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A gas pressure-based drift round blast design methodologyBy William Hustrulid
The National Institute for Occupational Safety and Health (NIOSH), as part of a comprehensive program to improve mine safety through the widespread acceptance of careful excavation principles in drift
Jan 1, 2007
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Explosion Pressure Design Criteria For Seals In U.S. Coal Mines - An Update On Work At NIOSHBy R. Karl Zipf
A fatal explosion in a sealed area at the Sago Mine in 2006 prompted researchers and regulators in the United States to re-examine the requirements for explosion-resistant mine seals. Seals are used i
Jan 1, 2009
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RI 3084 The Propulsive Strength and Rate of Pressure Development of the Cardox Blasting DeviceBy G. St. J. Perrott, N. A. Tolch
"PURPOSE OF TESTSThe propulsive strength4 developed by the Cardox blasting device depends on the thickness of disk, weight of heater element, and weight of carbon dioxide charge. It might be supposed
Apr 1, 1931
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OFR-155-81 Noise Control Of A Mine Operated Rail Personnel Carrier - Volume II. Underground EvaluationBy A. G. Galaitsis
The two volumes of this report summarize the noise control work performed by BBN on a rail personnel carrier operated in coal mines. Volume I of the report - submitted November 1977 - describes th
Jan 1, 1980
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RI 7580 Comparison Of Techniques For Electrowinning Tungsten From ScheeliteBy John M. Gomes
The Bureau of Mines investigated two techniques for removing CaO from scheelite (CaW04) prior to electrolysis. In the first technique, a crude tungstic oxide (WO3) containing 0.15-percent lime (CaO) w
Jan 1, 1971