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RI 4870 Some Thermodynamic Values For Ferrous Oxide
By G. L. Humphrey
Although thermodynamic data for ferrous oxide are among the most important in extractive metallurgy, adequate values have not been available until quite recently. The older data suffered not only from
Jan 1, 1952
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RI 9124 - Device for In Situ Measurement of Coal-Cutting Forces
By James C. Church
The Bureau of Mines devised and demonstrated a portable linear cutting tester that directly measures and records the in situ cutting forces required of continuous-mining machine picks to it coal in un
Jan 1, 1985
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RI 5934 Production Of Molybdenum Metal By Magnesium Reduction Of Molybdenum Oxides ? Summary
By T. T. Campbell
This investigation was undertaken by the Bureau of Mines to determine if high-purity ductile molybdenum of uniform quality can be prepared by bomb reduction techniques. Molybdenum trioxide (Mo03) a
Jan 1, 1962
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IC 8554 Analyses Of Natural Gases, 1971 ? Introduction
By L. E. Cardwell
This publication contains routine analyses and related source data for 475 natural gas samples from 17 States and two foreign countries. Of this total, 454 samples were collected during calendar year
Jan 1, 1972
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A Cost Comparison Of Selected Coal Mines From Australia, Canada, Colombia, South Africa, And The United States
This report presents production and delivered costs for coal exports from the five major Western coal-exporting countries: Australia, Canada. Colombia, South Africa, and the United States. Cost data w
Jan 1, 1993
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OFR-175-83 Fire Hazard Criteria For Noise Control Products In Underground Coal Mines
By Mark R. Pettitt
The development of fire hazard criteria for noise control products in underground coal mines are presented. Qualifying requisites of the criteria include maintaining miners' safety, allowing for
Jan 1, 1983
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RI 9255 - Heat-Resistant Steels Containing 8 pet Cr
By D. E. Larson
The U.S. Bureau of Mines investigated Fe-base alloys containing 8 pet Crwith Ni, AI, and Si additions as substitutes for standard AISI Type 304 stainless steel (SS) in high-temperature oxidizing appli
Jan 1, 1989
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IC 7686 Some Useful Applications Of Zirconium ? Conclusions
By J. H. McClain
In the last 3 years' operation of the zirconium-production plant, zirconium metal has been employed to good advantage in many applications. The most frequent use has been in situations requiring
Jan 1, 1954
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IC 8221 Analyses Of Natural Gases Of The United States, 1961 ? Introduction (7a1986c1-98db-4d93-89a4-0cf39cf6523e)
By Richard D. Miller
This publication contains routine analyses and related source data for 434 gas samples from 16 States. These samples were collected during calendar year 1961 as part of the continuous survey for the o
Jan 1, 1964
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IC 8221 Analyses Of Natural Gases Of The United States, 1961 ? Introduction
By Richard D. Miller
This publication contains routine analyses and related source data for 434 gas samples from 16 States. These samples were collected during calendar year 1961 as part of the continuous survey for the o
Jan 1, 1964
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OFR-42(2)-74 Protection And Troubleshooting Of Coalmine Electrical Cables - Continuous Miner Cable Reel System Design - I Introduction
Electrical trailing cables are frequently damaged in usage, especially on continuous minors, and because of their weight and damaged condition present a safety hazard to personnel required to handle t
Jan 1, 1972
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OFR-119-77 A Permissible Ultraviolet Lamp For Use By Mine Inspectors
By Fredrick M. Ryan
Present indications are that in about 2-3 years phosphor tags will be required in commercial explosives. A permissible 254 run ultraviolet lamp assembly has been developed to permit mine inspectors to
Jan 1, 1977
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RI 3223 Progress Reports - Metallurgical Division I. Mineral Physics Studies
By V. H. Gottschalk, John Grodd, R. S. Dean
"Elemantary ConsiderationsAlthough magnetiem was first discovered in and derives its name from an oxide of iron found in magnesia and called lodestone its pracical uses date from the discoveries of Fa
Mar 1, 1934
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RI 8508 Airblast Instrumentation and Measurement Techniques for Surface Mine Blasting
By Virgil J. Stachura
The Bureau of Mines has investigated techniques and instrumentation that measure accurately the airblast overpressures from surface mine blasting. The results include equivalencies between broadband r
Jan 1, 1981
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OFR-16-81 Development Of Lightweight Air Powered Drill Tool For Probe Drilling In Anthracite Mines
By William H. Hamilton
This report describes the results and conclusions of the development and evaluation of a unique concept for a lightweight air powered drill tool for probe drilling in anthracite mines. A concept mo
Jan 1, 1979
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IC 9423 Comparison Of Small Mines And Small Businesses: Health And Safety Barriers And Intervention Strategies
By Lynn L. Rethi
This U.S. Bureau of Mines report summarizes common obstacles found when attempting to implement health and safety strategies in small mines and small businesses in general industry. Recently, the U.S.
Jan 1, 1995
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OFR-46(3)-81 Risk Analysis For Rock Slopes In Open Pit Mines - Final Technical Report - Part III - Reliability Analysis Of Rock Slope Stability
By Herbert H. Einstein
The innate variability of natural materials and processes causes uncertainty in the models representing the natural phenomena and uncertainty in estimating the parameters that are used in these models
Jan 1, 1979
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RI 9290 - Shield Mechanics and Critical Load Studies for Unsymmetric Contact Configurations
By T. M. Barczak
This U.S. Bureau of Mines report investigates shield mechanics and component stress development in a two-legged longwall shield for unsymmetric canopy and base contact configurations. Previous studies
Jan 1, 1990
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OFR-23-81 Mine Grounding Systems - Evaluation Of In-Mine Grounding System And Codification Of Ground Bed Construction And Measurement Techniques.
By Wils L. Cooley
Two major grounding topics are covered: mine ground systems and ground-check monitors. Performance characteristics of ground-check monitors for high-voltage surface mine distribution cables and low-vo
Jan 1, 1979
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IC 9260 The Bureau Of Mines Ground-Fault Protection Research Program-A Summary
By M. R. Yenchek
The U.S. Bureau of Mines designed and constructed sensitive and coordination-free ground-fault relays (GFR's) for use on mine power systems. First, a list of GFR attributes for mine ac utilizatio
Jan 1, 1990