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OFR-77-81 A Model For The Determination Of Flyrock Range As A Function Of Shot Conditions
By Julius Roth
Flyrock is the source of most of the injuries and property damage in a majority of blasting accidents in surface mines. A quantitative correlation between shot conditions and maximum flyrock range can
Jan 1, 1979
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OFR-68-84 Improvement Of On-The-Job Training Procedures Through Utilization Of Modeling, Imitative And Other Learning Techniques
By Paul E. Loustaunau
This report describes a project in which three structured underground coal mine equipment operator training programs were developed. The project was carried out in two parts. In the first part, a rese
Jan 1, 1983
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IC 9196 Water Use In The Domestic Nonfuel Minerals Industry
By Choon Kooi Quan
Water availability is essential for mining and minerals processing. To provide government and industry with recent data for water use planning and management, the Bureau of Mines canvassed a number of
Jan 1, 1988
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IC 9223 Intrinsically Safe 5-V, 4-A Rechargeable Power Supply
By John J. Sammarco
The U.S. Bureau of Mines has developed a regulated, intrinsically safe, rechargeable power supply for portable electronic equipment for underground use. The regulated output is ideal for microprocesso
Jan 1, 1989
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RI 2971 A System of Accounts for the Slate Industry
By Oliver Bowles
"Simple systematic accounting that adequately records all transactions has long been regarded as essential to the welfare of any business enterprise. Some of the defects that detract from the prosperi
Nov 1, 1929
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Raising The Bar Of Ventilation For Large-Opening Stone Mines
By R. H. Grau, S. B. Robertson, R. B. Krog, T. P. Mucho
Due to the difficulties of ventilating large opening stone mines, the effective dilution of diesel particulate matter and noxious gases has often been problematic. Since stone mines have large opening
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OFR-154-81 Develop Grounding Practices For Metal/Non-Metal Mines
By Wils L. Cooley
This report analyzes electrical accident data in the metal/non-metal mining industry. Accidents are categorized to determine their root causes. Special attention is given to accidents associated with
Jan 1, 1981
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RI 3543 Use Of Rock Dust In Bituminous-Coal Mines, 1930-38 (A Statistical Survey)
By W. W. Adams
Rock dust, as a preventive or limiting factor in explosions of gas and coal dust in bituminous-coal mines, was used in larger quantities in 1939 than in any other year except 1937 since annual figures
Jan 1, 1940
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RI 3543 Use Of Rock Dust In Bituminous-Coal Mines, 1930-38 (A Statistical Survey) (6f99d31e-f516-4e3c-9c97-dc569c3e9251)
By W. W. Adams
Rock dust, as a preventive or limiting factor in explosions of gas and coal dust in bituminous-coal mines, was used in larger quantities in 1939 than in any other year except 1937 since annual figures
Jan 1, 1940
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IC 7005 Accident Experience Of Louisiana Salt Mines ? Introduction
By Eric H. Brown
One of the best methods by which the results of accident-prevention work can be measured for any particular period is to keep an accurate record of the accident experience, which may then also be comp
Jan 1, 1938
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RI 7892 Laboratory Experiments in Electrokinetic Densification of Mill Tailings (In Two Parts) 1. Development of Equipment and Procedures
By R. H. Sprute
This report describes Bureau of Mines laboratory test results in electrokinetic dewatering and consolidation of metal-mine tailings. Tailings were placed in 0.3-cubic-foot Plexiglass models, and dc po
Jan 1, 1974
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RI 7939 Seepage-Environmental Analysis of the Slime Zone of a Tailings Pond
By C. Daniel Kealy
Dissolved and suspended solids are present in the free water of tailings ponds. This Bureau of Mines study was designed to identify the influences of the slime zone in preventing these solids from rea
Jan 1, 1974
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OFR-70-78 Development Of A Quiet Rock Drill - Volume 1: Evaluation Of Design Concepts
By Ivor Hawkes
This report describes the results of a study to evaluate new design concepts for percussive rock drills that will result in quieter machines. It is shown that by incorporating such features as an effi
Jan 1, 1977
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Mineral Highlights - Argentina
Argentina follows Venezuela and Mexico as the largest producers of crude petroleum and natural gas in Latin America. Argentina 1S practically self-sufficient in fuels, but relies substantially on impo
Jan 1, 1982
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RI 4567 National Motor Gasoline Survey Winter 1948-49
By O. C. Blade
This report on the properties of motor fuels sold through service stations in the United States was made in accordance with a cooperative agreement between the American Petroleum Institute and the Bur
Jan 1, 1949
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IC 9204 Characterization Of The 1986 Nonmetallic Mining Workforce
By Shail J. Butani
In 1986 the Bureau of Mines conducted a probability sample survey, Mining Industry Population Survey, to measure such employee characteristics as occupation; principal equipment operated; work locatio
Jan 1, 1988
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IC 8099 Use Of High-Speed Data Reduction And Processing In The Mineral Industry ? Summary And Introduction
By Richard F. Hewlett
The purpose of this Bureau of Mines paper is to provide the mineral industry with current information on high-speed data processing and to illustrate how some of these techniques can be applied to the
Jan 1, 1962
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RI 8299 Wood Precharring: A Novel Fire-Retardancy Technique
By Calvin K. Lee
This Bureau of Mines report describes a simple fire-retardant treatment for wood. The treatment involves preheating the wood surface at high heat flux (~0.6 cal/cm2 sec) to form an in situ surface cha
Jan 1, 1978
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IC 8760 Anthracite In The Narragansett Basin Of Rhode Island And Massachusetts
By William R. Barton
Anthracite has been mined from the Narragansett Basin of Rode Island and Massachusetts sporadically, and with limited success, for more than 170 years. Beginning in 1974, interest in the coal of the B
Jan 1, 1977
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RI 3241 Formulas For Designing Natural-Gas Pipe-Line Systems Consisting Of Parallel Lines
By T. W. Johnson
The United States Bureau of Mines, in cooperation with the Natural Gas Department of the American Gas Association, has been studying actively for the past several years the flow of natural gas through
Jan 1, 1934