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RI 9547 - Bending Fatigue Tests on Flattened Strand Wire Rope at High Working Loads
By Richard C. Wang
The U.S. Bureau of Mines established a wire rope research laboratory to examine the factors that affect the safety and the useful life of wire rope. In the most recent work, two 32-mm 6x27H flattened
Jan 1, 2010
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RI 9454 - Vibration Testing of Off-Road Vehicle Seats
By John C. Gagliardi, Walter K. Utt
The U.S. Bureau of Mines, in cooperation with Carter Mining Co., conducted vibration tests of four off-road vehicle seats. The purpose of the tests was to determine which seat provided the best vibrat
Jan 1, 1993
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Surface Haulage Truck Research ? Background
By C. M. K. Boldt
Between 1989 and 1991, the greatest number of accidents in surface coal and metal/nonmetal mines involved haulage trucks. In 1995, the most frequently cited factor contributing to the 100 fatalities i
Jan 1, 1999
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OFR-63-81 Investigation Of The Formation Of Vapor Complexes Between Aluminum Chloride And Impurity Elements Associated With Aluminum Raw Materials
By John P. Hager
This study investigated the formation of vapor complexes between aluminum chloride and the chlorides of iron, titanium, and silicon. For the A1-Fe-C1 system the proposed gaseous complex species is Al2
Jan 1, 1980
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Experimental And Modeling Investigation Of The Effect Of Ventilation On Smoke Rollback In A Mine Entry (4b9ff821-fae2-4443-8539-f1017029c853)
By R. A. Franks, J. C. Edwards, L. Yuan
To determine the critical air velocity for preventing smoke rollback, diesel-fuel fire experiments were conducted in the National Institute for Occupational Safety and Health’s (NIOSH) Pittsburgh Rese
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RI 7135 Measurement Of Oleic Acid On Mineral Surfaces Using A Gas-Liquid Chromatograph
By Jerry L. Huiatt
An accurate and reproducible procedure was developed using the gas-liquid chromatograph to quantitatively measure oleic acid on flotation products and in flotation water phases. The method comprised e
Jan 1, 1968
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IC 6238 Mining Methods At The Morning Mine Of The Federal Mining And Smelting Company, Mullan, Idaho ? Introduction
By C. E. Wethered
This paper describing the mining methods employed by the Federal Mining and Smelting Co., operating the Morning mine at Mullan, Idaho, is one of a series being prepared by the United States Bureau of
Jan 1, 1930
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RI 9222 - Acid Sulfation of Alunite
By L. J. Froisland
The U.S. Bureau of Mines conducted laboratory studies on sulfuric acid (H2S04) digestion of alunite [KA13(S04)2(OH)6] as a means for treating domestic deposits of this mineral. Digesting alunite ore i
Jan 1, 1989
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RI 4844 Concentration Of Oxide Manganese Ore From Doyle-Smith Claims, Northern Yuma County, Ariz.
By J. B. Zadra
During the investigations of the occurrence of manganese in the western United States, the Bureau of Mines received a 100-pound sample of manganese ore from the Doyle-Smith property, Yuma County, Ariz
Jan 1, 1952
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RI 3210 A Study of the Properties of Texas-New Mexico Polyhalite Pertaining to the Extraction of Potash VII. Effect of Particle Size, Sodium Chloride Concentration, and Temperature upon Hot Extraction by a Multistage Process
By F. Fraas, J. E. Conley
"The problem of recovering potash from the mineral polyhalite (K2SO4.MgSO4.2CaSO4.2H2O), occurring in large quantities in the salt beds of Texas and New Mexico, has been under investigation at the Non
Sep 1, 1933
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Detrimental Effects Of Capacitance On High-Resistance-Grounded Mine Distribution Systems
By Thomas Novak, Jeffrey L. Kohler, Joseph Sottile, Steve J. Gnapragasam
Modern underground coal mines can be very large, having a total connected load in excess of l5 000 hp. These mines generally have many miles of high-power conveyor belts and 15 or more miles of high-v
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RI 8330 Catalytic Properties of Natural and Rare-Earth-Promoted Manganese Nodules
By E. F. Ferrell
The Bureau of Mines, U.S. Department of the Interior, studied the use of manganese sea nodules for catalytic oxidation in air of 1 pct carbon monoxide, 1 pct propane, and 1 pct methane. Catalysts were
Jan 1, 1978
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OFR-44-79 Monitoring Of Mine Air Blast Pollutants From Six Explosives Tested In An Underground Mine
By Duane L. Abata
Toxic gases produced by the detonation of six explosives were measured in an underground hardrock metal mine during actual mining operations. The six explosives included two semi-gelatin dynamites, th
Jan 1, 1978
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OFR-100-78 Improved Visibility Systems For Large Haulage Vehicles
By Kent W. Hawley
An improved visibility system was developed for use on the large (100 ton+) haulage trucks typically operated in open pit and surface mines. The improved visibility system provides the truck driver&ap
Jan 1, 1978
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OFR-104-82 Exploratory Studies Of Flame And Explosion Quenching - Volume 1 - Summary
By L. Douglas Smoot
This research program was a theoretical and experimental study to improve understanding of the mechanisms of flame extinguishment in methane-coal dust-air-suppressant mixtures. This final report is a
Jan 1, 1978
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RI 3300 Flotation of Langbeinite from Potash Field, NM & TX
By S. R. B. Cooke, F. D. DeVaney
"INTRODUCTION The potash mineral receiving the most attention in the newly discovered. New Mexico-Texas potash district near Carlsbad, N. M. is sylvite (potassium chloride). Sylvite contains more pota
Feb 1, 1936
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Suggestion of a Cause-and-Effect Relationship Among Coal Rank, Airborne Dust, and Incidence of Workers’ Pneumoconiosis
By Steven J. Page, John A. Organiscak
Prolonged exposure to airborne respirable coal mine dust is responsible for coal workers' pneumoconi¬osis (CWP): Furthermore, miners who show evidence of higher radiographic categories of simple
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RI 9423 - Hybrid Fiber-Optic Electrochemical Carbon Monoxide Monitor
By J. E. Chilton, C. R. Carpenter
The U.S. Bureau of Mines has developed an intrinsically safe carbon monoxide (CO) monitoring system for mines by coupling a fiber-optic data telemetry (FODT) system with a prototype electro- chemical
Jan 1, 1992
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RI 5735 Process Development In Removing Sulfur Dioxide From Hot Flue Gases (In Four Parts) 1. Bench-Scale Experimentation ? Summary
By D. Bienstock
In connection with air-pollution studies, the Bureau of Mines is cooperating with the U.S. Public Health Service in investigating the use of solids for removing sulfur dioxide in concentrations of les
Jan 1, 1961
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RI 4306 A Combination Cleaning And Dewatering Process For Treating Fine Sizes Of Coal
By B. W. Gandrud
To say that the treatment and handling of the "fines" is the most difficult phase of coal preparation is probably an understatement of facts. It is the fine sizes from about 1/16-inch to 0 that are ma
Jan 1, 1948