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OFR-4-76 Design And Development Of Protective Canopies For Shuttle Car, Loader, And Roof Drill ? 1. IntroductionBy W. Hermanson
This report, which covers the period from January 16 to October 21, 1974, describes the work performed in compliance with the requirements of contract no. H0242028 and modifications 1 and 2 thereto. T
Jan 1, 1974
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Design Of Underground Openings In Competent Rock - SummaryBy Leonard Obert
THIS REPORT presents methods and principles useful in designing underground mine openings and pillars in competent rock formations. Two types of formations are considered: (1) Massive formations, in w
Jan 1, 1960
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OFR-38-79 A Cold-Bend Test For Thermoplastic Cable JacketsBy R. H. King
A very simple cold-bend test was devised and tested for evaluating thermoplastic jackets used on mine-power-feeder cables. A test sample is bent into a semi-circle whose radius is equal to the minimum
Jan 1, 1978
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RI 6435 Thermodynamic Properties of Sodium Bromide and Sodium Iodide at Low TemperaturesBy T. Estelle Gardner, A. R. Taylor
Heat capacity measurements were made on sodium bromide ( NaBr ) and sodium iodide ( NaI) in the temperature ranges of 7 ° to 300 ° K and 56 ° to 300 ° K using an adiabatic calorimeter . Smooth values
Jan 1, 1964
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RI 7242 Reduction Roasting Of Steep Rock Iron-Bearing MaterialsBy Charles Prasky
The Bureau of Mines investigated the conversion of nonmagnetic iron minerals to magnetic form through reduction Toasting operations. The primary objective was to obtain a concentrate that could be use
Jan 1, 1969
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In-Mine Evaluation Of Smart Mine Fire SensorBy R. A. Franks, G. F. Friel, J. C. Edwards, A. C. Smith
An evaluation of a nuisance-emissions-discriminating smart mine fire sensor system was made in an operating coal mine. These field evaluations were conducted to determine the sensor system's abil
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MLA 28-83 - Mineral Investigation Of The Raywood Flats Rare II Area (No. B5187), Riverside And San Bernardino Counties, California ? SummaryBy Stephen R. Iverson
Mineral deposits examined in and near the Raywood Flats RARE II area have low potential for development. The Mill Creek Mine (fig. 1), has produced about 14,000 tons (13,000 t) of marble, and another
Jan 1, 1983
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OFR-124-76 Refined Design Of Protective Canopies For Shuttle Cars, And A Roof Bolter ? 1. IntroductionBy Hanns J. Billmayer
This report, which covers the period from June 15, 1974 to May 30, 1975, describes the work performed in compliance with the requirements of Contract No. H0242065 and modifications 1, 2, and 3 thereto
Jan 1, 1975
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RI 3288 Detailed Statistical Microscopic Analyses Of Ore And Mill Products Of The Utah Copper Co. ? Introduction (22f9bf8a-7549-4c23-9796-010e350bad1a)By R. E. Head
This paper embodies the data obtained by a detailed statistical, microscopic analysis of the composite mill feed concentrate, and tailing, from the Magne and Arthur mills of the Utah Conger Co. for 1
Jan 1, 1935
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IC 7321 Accident Experience Iron-Ore Mines - Lake Superior District 1940-43 ? IntroductionBy Frank E. Cash
The iron-ore ranges in the Lake Superior district are the liarquette in Michigan, Menominee and Gogebic in Michigan end Wisconsin, and the Vermilion, Mesabi, and Cuvuna in Minnesota. These ranges prod
Jan 1, 1945
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RI 8885 - Pilot Mill Flotation of Serpentinized Platinum-Palladium Ore From the Stillwater ComplexBy E. Morrice
The Bureau of Mines investigated methods for beneficiating platinum-palladium ores from the Stillwater Complex, Montana. Results of bench-scale and pilot-scale studies employing froth flotation to rec
Jan 1, 1984
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IC 8051 Mining Methods Of The Fort Dodge Limestone Company, Inc., Fort Dodge, Iowa ? Introduction And SummaryBy L. G. Marshall
This report is one of a series published by the Federal Bureau of Mines, describing mining methods and performance at individual mining operations throughout the United States. The objective of these
Jan 1, 1962
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IC 7203 Development Of The Sand And Gravel Industry ? IntroductionBy Shirley F. Colby
The past 40 years have seen the sand and gravel industry grow from small roadside pits and holes in farmers' back yards to giant corporations selling millions of tons of sand and gravel each year
Jan 1, 1942
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IC 6444 Mining Laws of the Dominican RepublicBy IRENE AITKENS
The Mining Law of 1910 , with amendments of 1914 and 1928 , is at present in force in the Dominican Republic . The first and basic mining law of the Republic was passed in 1876 , and although numerous
May 1, 1931
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RI 4078 Electrolytic Manganese in Stainless Steel - Tests at the Timken Roller Bearing Co., Canton, OhioBy F. Sillers, R. T. C. Rasmussen
"INTRODUCTION This is the fourth report of investigations dealing with the cooperative tests between the Bureau of Mines and industry on the use of electrolytic manganese in steelmaking. The first rep
Jun 1, 1947
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RI 4142 Concentration of Magnanese Ores from Grand & Emory Co., UTBy B. K. Shibler, W. G. Sandell, G. M. Potter, H. D. Snedden
"INTRODUCTION During the course of the investigation of the occurrence of manganese deposits in the western United States, examining 'engineers of the Bureau of Mines collected samples from seven mang
Dec 1, 1947
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RI 3107 A Practical Method Of Solving The Emergency Manganese ProblemBy Jr. Harty
Intensive work on the deoxidation of steel with manganese-silicon alloys by the U. S. Bureau of Mines has shown that the use of those alloys, which may be produced from our domestic manganese ores, wo
Jan 1, 1931
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IC 7419 Transportation of Iron Ore, Underground Mines Lake Superior DistrictBy Frank E. Cash, John A. Johnson
"INTRODUCTION The operators of the Lake Superior district iron-ore mines have made tremendous progress in the past 25 years in the transportation of broken ore from the working places to the surface.
Nov 1, 1947
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RI 7241 Continuous Monitoring Of Diesel Exhaust Gas For Carbon Dioxide, Carbon Monoxide, Oxygen, Methane, And Nitrogen OxidesBy Helen W. Lang
This report describes a monitoring system applied by the Bureau of Mines to provide rapid, continuous determination of the main constituents of exhaust gas during the Bureau's approval schedule t
Jan 1, 1969
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RI 3107 A Practical Method Of Solving The Emergency Manganese Problem ? SummaryBy C. H. Herty
Intensive work on the deoxidation of steel with manganese-silicon alloys by the U. S. Bureau of Mines has shown that the use of those alloys, which may be produced from our domestic manganese ores, wo
Jan 1, 1931