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Safety Code For Installing And Using Electrical Equipment In And About Coal Mines (M.2-1) - Section I. - Scope And Application[1.1. The provisions of this code are minimum provisions and are designed to minimize hazards to life and property in and about underground coal mines where electrical equipment and circuits installed
Jan 1, 1952
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RI 3406 Progress Reports -Metallurgical Division ? 23. Electrometallurgical Investigations - Electrolytic Manganese (fbd52df1-f141-4c20-8433-06e41afd9f51)By S. M. Shelton
Preliminary work in the investigation of electrolytic manganese, as reported4/, showed promise for a practical procedure of continuous production. Laboratory work was continued in the direction of pro
Jan 1, 1938
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RI 8170 Water Barriers for Suppressing Coal Dust ExplosionsBy Israel Liebman
The Bureau of Mines developed three types of passive water barriers for suppressing slow-moving coal dust explosions. One type is a modification of a conventional tub barrier and depends on the dynami
Jan 1, 1976
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RI 6794 Decomposition Of Manganese Sulfate By A Partial Reduction ProcessBy H. C. Fuller
A method was devised and developed by the Bureau of Mines for decomposing manganese sulfate at significantly lower temperature than that required by the conventional procedure of using heat alone. Thi
Jan 1, 1966
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OFR-104-78 Demonstrating The Noise Control Of A Coal Preparation Plant - Volume I. Initial Installation And Treatment EvaluationBy Matthew N. Rubin
This report summarizes the work performed under USBM Contract No. H0155155, "Demonstrating the Noise Control of a Coal Preparation Plant." A Consolidation Coal Company coal preparation plant (the Geor
Jan 1, 1977
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IC 8879 State Severance Taxes: A Summary And An Analysis Of The Impact Of Rate Changes On Copper Recovery CostsBy Phillip N. Yasnowsky
This Bureau of Mines report summarizes State severance taxes imposed on minerals and mineral fuels, provides a hypothetical example of how a State severance tax affects selected components of a firm&a
Jan 1, 1982
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RI 9450 - Early Detection of Insulation Failure in Electric Motors (14fe8495-d33c-412d-bb25-172386312f7f)By Gerald T. Homce
A system capable of monitoring mine electrical power systems and detecting impending component .failure could significantly improve power system safety and reduce unscheduled equipment downtime. Such
Jan 1, 2010
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RI 5693 Fersmite: A Rare Calcium-Columbate Mineral From Montana ? Summary And IntroductionBy H. D. Hess
This report describes in detail a unique occurrence of fersmite, (Ca, Ce, Na) (Cb, Ti, Fe, Al)2 (0, OH, F)6, which occurs as small anhedral inclusions and intergrowths with a tantalum-free columbite f
Jan 1, 1960
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RI 4156 Boy Scout-Jones & Moss-Richardson Molybdenum Deposits, Halifax County, N.C.By F. K. McIntosh, A. F. Robertson, T. J. Ballard
"INTRODUCTION Molybdenum deposits occur in Halifax County, N. C., near the eastern border of the Piedmont province. The deposits are associated with a small granite body about 2 miles long and half a
Dec 1, 1947
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OFR-36(2)-78 Airborne Contaminants In Above Ground Metal And Nonmetal Mining And Processing Work AreasBy Walter D. Holland
This document is one of a series of instruction guides developed to help instructors present health and safety training courses to workers in the metal and nonmetal mining industry. This course is int
Jan 1, 1977
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RI 7562 Recovery Of Copper From Converter Slags By FlotationBy V. E. Edlund
Laboratory batch flotation tests were conducted on copper converter slags to evaluate the relative merits of recovering copper from slow-cooled versus water-quenched slags. Three slags containing 1.6,
Jan 1, 1971
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IC 6480 Tunnel Driving Methods Used At The Ojuela Unit Of The Compania Minera De Penoles, S. A., Ojuela, Durango, Mexico ? IntroductionBy John P. Savage
This paper is one of a series being prepared by the United States Bureau of Mines on tunneling methods. The tunneling methods described are those used at the Ojuela unit of the Compania Minera de Peno
Jan 1, 1931
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RI 4373 Investigation of Tolstoi Mountain iron deposits, Kasaan Peninsula, Prince of Wales Island, southeastern Alaska (de7202ed-710a-4b64-b6ba-2e9d00d959e6)By Aner W. Erickson
"Magnetite iron deposits on Tolstoi Mountain were examined as part of the investigations by the Bureau of Mines of iron and copper ores on Prince of Wales Island. The Tolstoi Mountain project was a pa
Dec 1, 1948
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Mineral Industry In Early AmericaBy Hillary W. St. Clair
Mining activity began in colonial times with ironmaking operations scattered along the eastern seaboard. Iron furnaces and forges manufactured iron implements from bog iron ores using charcoal from th
Jan 1, 1977
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RI 6680 Stress Corrosion Cracking Of Vanadium, Molybdenum, And A Titanium-Vanadium AlloyVanadium, molybdenum, and a titanium-10 percent vanadium alloy were evaluated for their susceptibility to stress corrosion cracking in a number of corrodents. Tests were conducted utilizing convention
Jan 1, 1965
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OFR-100-93 Results Of The 1991-92 U.S. Bureau Of Mines Site Specific Mineral Investigations Project In AlaskaBy Steven A. Fechner
In 1991 and 1992, the Bureau of Mines completed chromium, platinum-group metals (PGM), and tin investigations, and started indium, manganese, titanium, and vanadium investigations in Alaska. These stu
Jan 1, 1994
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OFR-105(3)-84 Ground And Air Vibrations Caused By Surface Blasting. Volume 3 Computer Simulation Predictor Of Ground Vibrations Induced By BlastingBy Ross. C. Barkley
A computer program has been written to simulate ground vibrations induced by multiple-hole surface blasts. The program is an inexpensive and relatively easy to use tool for predicting the principal bl
Jan 1, 1983
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RI 6335 Two Hydrated Calcium Aluminates Eucountered in the Lime-Soda-Sinter ProcessBy R. V. Lundquist, H. Leitch
Two hydrated calcium aluminates , formed by side reactions in the leaching step and desilication step of the lime- soda sinter process , were investigated to better define their influence on alumina r
Jan 1, 1963
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RI 4559 Grouting Diamond-Drill Holes at the Christmas Mine, Gila County, Ariz. With Notes on the Setting Properties of Cements and the Use of Liquid Carbon Dioxide as a Pressuring Agent in GroutingBy Stanton L. Tainter
"As an adjunct to its minerals-investigation program, the Bureau of Mines has developed a number of operating devices and techniques worthy of note. This paper, prepared under the supervision of J. H.
Nov 1, 1949
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IC 6960 Sampling And Testing Of A Gold-Scheelite Placer Deposit In The Mojave Desert, Kern And San Bernardino Counties, Calif. ? IntroductionBy H. W. C. Prommel
The increase in the price of gold in 1933 was the cause of starting many activities in gold prospecting and mining; it led to investigations of many of the so-called desert placers in the Southwest, w
Jan 1, 1937