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MLA 110-82 - Mineral Investigation Of The Sheep Hole/Cadiz Wilderness Study Area (BLM), San Rernardino County, California ? Summary Statementt
By Phillip R. Moyle
Several deposits in the Sheep Hole/Cadiz Wilderness Study Area (WSA) have small identified or potential for undiscovered gold and silver resources. One prospect area is a potential target for molybden
Jan 1, 1982
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RI 3505 Relationship Of Ash-Fusion Temperatures Of Coal And Coke ? Introduction
By D. A. Reynolds
[A few studies on the relationship of the fusion temperature of the ash of coke to that of the corresponding coal have been made on commercial high-temperature cokes. R. J. Rose3/ in 1921 compared the
Jan 1, 1940
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RI 8273 Longer-Than-Seam-Height Drill Development Program
By G. K. Derby
Five different types of drilling systems were developed under the flexible drill program that was initiated by the Federal Bureau of Mines to protect roof bolter operators. The systems were designed f
Jan 1, 1978
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OFR-122-82 Study Of Parameters Which Influence The Energy Utilization Efficiency In The Grinding Of Gabbro Ores
By S. Raghavan
An investigation of the possibility of improving the grinding characteristics of a gabbro ore containing copper and nickel sulfides via a thermal shock treatment technique has been carried out. The re
Jan 1, 1981
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OFR-39(5)-82 Experiments On Personal Equipment For Low Seam Coal Miners: IV. Incorporating Coiled Cord Into Cap Lamp Battery Cords (f9ff7a4b-ad02-4b4a-a276-651d10f5a02f)
By Tyler Blake
This report describes a study designed to evaluate a pro-posed modification in the cap lamp battery cord intented to reduce the incidence of snagging and catching of the cord. A three phase evaluation
Jan 1, 1980
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Mineral Investigation Of The Lower Saline Valley Wilderness Study Area (BLM No. CDCA-117A), Inyo County, California ? Summary Statement
By Clayton M. Rumsey
No producing or developing mines nor known mineral resources are in the Lower Saline Valley Wilderness Study Area. The inactive Bonanza Prospect has low potential for copper-gold-silver resources. Sto
Jan 1, 1984
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Flammability Limit Measurements For Dusts In 20-L And 1-M3 Vessels
By Kris Chatrathi, John E. Going, Kenneth L. Cashdollar
Two types of flammability limits have been measured for various dusts in the Fike 1-m3 (1000-L) chamber and in the Pittsburgh Research Laboratory (PRL) 20-L chamber. The first limit is the minimum exp
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OFR-31-84 Ultrasonic Stress Transfer - A Direct Test Of Rock Bolt Integrity
By G. R. Moulder
A device was developed that measures dynamic stress (ultrasonic energy) transfer through installed rock bolts, a measure that is directly proportional to the degree of grout bonding of the bolt to the
Jan 1, 1983
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OFR-69(4)-75 Research And Development Contract For Coal Mine Communication System - Volume 4 Environmental Measurements ? Section I - Introduction
This report summarizes the results of several field tests conducted by Collins for the Bureau of Mines under contract S0122076 and contract H0232056. The field projects represent a part of Collins con
Jan 1, 1974
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OFR-11-85 Characterization And Beneficiation Of Bitumen-Free Domestic Tar Sands
By P. B. Altringer
The Federal Bureau of Mines conducted a study to determine if residues from fractional distillation represent a potential source of mineral values. A literature review and discussions with tar sand sp
Jan 1, 1982
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IC 7892 Analysis Of 494 Accidents, Open-Pit Iron-Ore Mines, Beneficiation Plants, And Shops Lake Superior District ? Summary
By R. O. Pynnonen
This publication presents a study by the Federal Bureau of Mines of 494 accidents in open-pit iron-ore mines, beneficiation plants, and shops of the Lake Superior district from March 1949 to June 1956
Jan 1, 1959
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RI 7946 Coal Mine Dust Incombustibles Content Analyzer Using a Gamma-Ray Backscatter Technique
By F. E. Armstrong
An instrument using a gamma-ray backscatter technique for determining the weight-percent incombustibles content of coal dust and rock dust mixtures in coal mines has been built and tested. The unit gi
Jan 1, 1974
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OFR-9(3)-80 Surveying Inhalation Contaminants In Above-Ground Metal And Nonmetal Mining And Processing Work Areas
By Walter D. Holland
This 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 intended for
Jan 1, 2011
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OFR-33-83 Fluid Cavitation As A Rock Crushing And Rock Fragmentation Tool
By David A. Summers
The use of high pressure fluid cavitation is investigated as a means of breaking an ore into its constituent grains. This Cavitational Rock Dissagregation (CRD) is found to be possible and effective i
Jan 1, 1982
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RI 4432 Magnetic Surveys Of Certain Magnetite Deposits In New Jersey Part II. Morris, Passaic, Sussex, And Warren Counties
By J. A. Stampe
In connection with its investigations of strategic minerals in the United States, the Bureau of Mines ran magnetic surveys totaling more than 533,000 linear feet at 30 deposits of magnetite in norther
Jan 1, 1949
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RI 3910 Active List of Permissible Explosives and Blasting Devices Approved Previous to December 31,1945, prepared
By J. E. Tiffany, Z. C. Gaugler
An active list of permissible explosives was published in December 1943 as part of the Bureau of Mines Report of Investigations 3736 under the title "Active List of Permissible Explosives and Blasting
Jul 1, 1946
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IC 6467 Milling Methods And Costs At The Concentrator Of The Old Dominion Co., Globe, Ariz. ? Introduction
By D. L. Forrester
This paper, describing the milling practice of the Old Dominion Co., is one of a series being prepared by the: United Staten Bureau of Mines. ACKNOWLEDGMENT In the preparation f this paper, ackn
Jan 1, 1931
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RI 6143 Heats And Free Energies Of Formation Of Calcium Tungstate, Calcium Molybdate, And Magnesium Molybdate
By R. Barany
The heats of formation at 298.15° K of calcium tungstate, calcium molybdate, and magnesium molybdate were determined by solution calorimetry. For the heats of formation from the elements, the values o
Jan 1, 1962
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OFR-27-82 Propagation Of UHF Radio Waves In Limestone Room And Pillar Mines
By Robert L. Lagace
This report presents a mathematical model for the propagation of UHF radio waves in the large cross-section tunnels of a room and pillar limestone mine, and describes the analysis of a small amount of
Jan 1, 1979
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OFR-4-77 Feasibility Study Of Detecting Voids By Shear Wave Refraction Methods ? Summary
By Roger M. Turpening
This study was performed to examine the feasibility of using seismic shear waves to detect the presence of abandoned coal mines. !he Antiquity Coal Mine near Antiquity, Ohio was used as a region of kn
Jan 1, 2012