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RI 9071 - Capability Evaluation of the Radial-Axial Splitter
By S. J. Anderson
To deftne the capabilities of a nonexplosive excavation concept, the Bureau of Mines conducted reduced-scale laboratory tests of a mechanical excavation tool called a rock splitter. The splitter inve
Jan 1, 1987
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RI 4155 Investigation of the Iron-Bearing Formation of the Western Gogebic Range, Iron County. WIS
By Clyde L. Holmberg, Paul Zinner
"INTRODUCTION In view of the large tonnage of low-grade iron ore and iron-bearing material known to exist at the western limits of the Gogebic range, the Bureau of Mines undertook an investigation of
Dec 1, 1947
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OFR-123-79 The Application Of Advanced Mine Air Monitoring Techniques To Mines Using Diesel Powered Equipment Prepared For United States Department Of Interior Bureau Of Mines
By John H. Johnson
This report covers the third and final year of work conducted under U. S. Bureau of Mines Grant G0166027, "Monitoring of Mine Air Pollutants". The report discusses work performed in three areas. These
Jan 1, 1979
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RI 9458 - Behavior of Simulated Longwall Gob Material (33936e16-8cd5-484a-990f-c74e5f8fcfa1)
By Deno M. Pappas
This report presents results of a U.S. Bureau of Mines study of longwall gob material. The objective of this work was to determine material stiffness properties of the gob for use in numerical models
Jan 1, 2010
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Placer-Mining Methods And Costs In Alaska - Introduction
By Norman L. Wimmler
Active placer mining in Alaska began near Juneau in 1880, but the first gold rush did not start until 1896; then the discovery of the Klondike brought gold seekers from all parts of the world. A few o
Jan 1, 1927
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IC 8081 Proposed Standardization Of Coal Mine Examination Records ? Introduction And Summary
By Harry A. Schrecengost
The Bureau of Mines has found considerable lack of uniformity in style and content of record books used for reporting the results of examinations made by coal-mine officials. These books range from el
Jan 1, 1962
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OFR-112(1)-82 Safety Analysis Of The Impactor Shaft Sinking System
By C. A. Geffen
This report, sponsored by the U. S. Bureau of Mines, presents the results of an examination of the safety of the impactor shaft sinking system in comparison to conventional shaft sinking technology. D
Jan 1, 1982
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OFR-2-80 Development Of New Design Concepts For Construction Of Valley Fills
By LeRoy D. Loy
The disposal of excess overburden from surface mining can be accomplished by use of a reclamation technique entitled head-of-hollow or valley fill. This report attempts to assess current valley fill r
Jan 1, 1978
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RI 3416 Truck Vs. Rail. Haulage In Bituminous-Coal Strip Mines ? Introduction
By Albert L. Toenges
[sing tho ppsf; few Yomn t!le:.c. hcs beer. p. trqnd away frorn locomotive haulwe of cop2 frorn tile losdiw point to tho prop,nration plant of bitu~i- nnus-cod strip mlncc to a;~to~lzcd. h,71Jlr.:~. T
Jan 1, 1938
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RI 3416 Truck Vs. Rail. Haulage In Bituminous-Coal Strip Mines ? Introduction (f486decb-8ef0-4e11-b5ac-26186b61a78f)
By Albert L. Toenges
[During the past few years there has beer trend away from locomotive haulage of coal from the loading point to the preparation plant of bituminous-coal strip, miner to motorized. haulage. The questio
Jan 1, 1938
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RI 7774 Sulfur Dioxide Emission Control By Hydrogen Sulfide Reaction In Aqueous Solution - The Citrate System
By J. B. Rosenbaum
Prolonged laboratory and limited pilot plant tests have shown that the Bureau of Mines buffered S02 -H2S process is capable of removing 95 to 99 percent of the S02 from industrial waste gases. Most of
Jan 1, 1973
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IC 7355 Geophysical Abstracts 123 October-December 1945 - With An Index To Abstracts 120-123
8186. Aquilina, C. Determinazioni relative di gravita eseguite nel 1939 (Relative Determinations of Gravity Made in 1939), Ric. Ingegn, Rome, vol. 10, 1942, pp, 6376. In 1939, the author made a sur
Jan 1, 1946
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Emerging Technologies And The Future Of Geotechnical Instrumentation
By E. L. McHugh, J. M. Girard
This paper discusses the results of two recent case studies in which high-tech prototype instruments were used. The first case study describes the results of a ground-based hyperspectral imaging tool
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Cold-Mold Arc Melting And Casting
By R. A. Beall
This bulletin reviews the historical background of the cold-mold arc-melting technology, with specific references to the development that led to homogeneous zirconium ingots. Descriptions are given of
Jan 1, 1968
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RI 9415 - Cause of Floor Self-Heatings in an Underground Coal Mine (f50c25d5-acc4-494c-901f-26455f6e764b)
By Y. Miron
'This report presents a U.S. Bureau of Mines study to identify the causes of self-heating events beneath the floor of a deep underground coal mine. Mine samples from both heated and unheated are
Jan 1, 2010
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RI 3832 A Study of Certain Factors in the Hydrometallurgy and Electrodeposition of Cobalt
By G. F. Livingston, F. K. Shelton, J. C. Stahl, R. E. Churchward
"INTRODUCTION An investigation of the metallurgy of cobalt from domestic ores has been in progress since February 1940 and has resulted in the formation of a hydrometallurgleal process for the product
Nov 1, 1945
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LDV Measurements in Gas-Solid Flows
By K. Clifton, K. Kar, M. Gautam, J. T. Jurewicz
"This paper describes the history of LDV measurements employed in research involving gas-solid flows. Much of the discussion deals with measurement techniques employed to obtain separate and simultane
Nov 1, 1995
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IC 7352 Annual Report Of Research And Technologic Work On Coal - Fiscal Year 1945 ? Introduction
By A. C. Fieldner
This is the tenth annual report of research and technologic work conducted by the Bureau of Mines on the occurrence, properties, mining, preparation, and uses of coal and coal products. These annual r
Jan 1, 1946
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RI 3110 A Study of Falls of Roof and Coal in Mines of Harrison County, West Virginia
By J. W. Paul, J. N. Geyer
"GENERAL STATEMENTThe purpose of this report, which is the first of a series of three covering mines in the Fairmont district of West Virginia, is to give the result of a' study conducted in seal mine
Aug 1, 1931
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IC 8796 Cost Of Producing U308 From Ammonium Bicarbonate In Situ Leach Solution By The Multiple-Compartment Ion-Exchange System
By Masami Hayashi
The Bureau of Mines estimated the cost for ,3 uranium ion-exchange recovery system using five grades of 17.0, leach solution producing 815,570 pounds of U 0? per year from an ammonium bicarbonate in s
Jan 1, 1979