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Reflections on R&D-led industrial development in establishing a SA Ti metal powder industry
By Ofra Damm, v du Preez, D. van Vuuren, L. Simpson, H. Chikwanda
"South Africa is the world?s second largest producer of titanium bearing minerals, but apart from producing titanium mineral concentrate to form TiO2 slag, little further value is added in South Afric
Jan 1, 2014
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Mineral Commodity Summaries 1986 - An Up-To-Date Summary Of 87 Nonfuel Mineral Commodities - Significant Events In The Nonfuel Mineral Industry In 1985
The value of domestic raw nonfuel mineral output in 1985 was estimated at $23.7 billion, 2% above the 1984 value of $23.1 billion. This crude mineral output was the basis for approximately $244 billio
Jan 1, 1986
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Contributions To The Data On Theoretical Metallurgy ? VIII. The Thermodynamic Properties Of Metal Carbides And Nitrides - Introduction
By K. K. Kelley
The collection and correlation of thermodynamic data concerning substances of metallurgical interest have constituted one of the major activities of the Pacific Experiment Station of the Bureau of Min
Jan 1, 1937
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Mineral Economics
By Michael Rieber
Mineral economics interfaces the mineral sciences and engineering with finance and economics in the analysis of appropriate questions facing the minerals and energy industries. Its practitioners inclu
Jan 1, 2008
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OFR-133A(1)-77 Longwall-Caving Mining Method For Thick Coal - Design And Feasibility Study - Final Report, Volume I
By M. G. Wallis
This report presents the results of a study to develop a detailed mining method design based on longwall mining with sublevel caving. The method is applicable to low-dipping coal seams 20 or more feet
Jan 1, 1977
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First-Quarter 1987 Economic Activity - First Quarter 1987
By Keith L. Harris
Surprisingly, real gross national product (GNP) surged at a seasonally adjusted annual rate of 4.3% for the first quarter of 1987 according to preliminary estimates made by the Department of Commerce,
Jan 1, 1987
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Longwall Mining In America (f89fdb53-aac0-4b35-861d-c15df395bb25)
By Joseph Kuti
Longwall mining is the term used for the underground extraction of a wide and deep panel of coal. Such a panel may be blocked out by one or more entries on either side ("head" and "tail") of a longwal
Jan 1, 1978
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Slope unit based 3D landslide hazard mapping system
By Y. Mitani, M. Xie, G. Zhou, T. Esaki
The assessment of landslide instability and risk has become a topic of major interest for both geoscientists and engineering professionals as well as for local communities and administrations in many
Jan 1, 2003
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The Constitution Of Copper-Iron And Copper-Lead-Iron Mattes.*
By Ivan E. Goodner, Charles H. Fulton
THE subject of the constitution of copper-iron mattes has received considerable attention in recent years by Keller,1 Bolles,2 Hofman,3 and Gibb and Philp.4 Still more recently Friedrich, Röntgen, Wie
Nov 1, 1908
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OFR-4(1)-72 Industrial Engineering Study Of Hazards Associated With Underground Coal Mine Production - Volume I - Analysis Of Underground Hazards And Fatal Accidents
In 1970, the U. S. Bureau of Mines contracted with Theodore Barry and Associates, a management consulting firm, to perform a one-year industrial engineering study of working-face hazards in undergroun
Jan 1, 1971
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OFR-32-81 Electromagnetic Fields In Mine Environments
By James R. Wait
The present final report constitutes the total productivity of a series of contracts from the U.S. Bureau of Mines and the Institute for Telecommunication Sciences over the period 1971-1979. The empha
Jan 1, 1980
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Identification Of Distillable Paraffins, Olefins, Aromatic Hydrocarbons, And Neutral Heterocyclics From A Low-Temperature Bituminous Coal Tar
By Clarence Karr
AN EXTENSIVE characterization was conducted on the neutral oil components in a low-temperature bituminous coal tar. A total of tai individual compounds identified with respect to individual isomers, a
Jan 1, 1967
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RI 3233 The Occurrence of Gases In Coals (309cd25a-d5a0-492f-b9e8-8c724ed5558b)
By George S. Rice
"The emission of hydrocarbon gases from coal beds and contiguous strata causes many accidents in coal—mine workings, the number of fatalities so caused being second only to those due to falls of roof.
Jun 1, 1934
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RI 6636 Stainless Steel Gadolinium Alloys
By M. Copeland
Phase relations of gadolinium alloyed, up to 40 weight-percent (wt pct), with AISI 304-type stainless steel were established. Body-and face-centered cubic iron-rich solid solution phases and several i
Jan 1, 1965
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Incline/Decline Boring With Tunnel Boring Machines
By Jack E. Brockway
As tunnel boring machine technology has expanded, so has its range of application. Tunneling machines (TBM's) are tackling tasks today that fifteen years ago were considered "inappropriate". A ca
Jan 1, 1983
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Symposium on Powder Metallurgy
By Nicholas J. Grant
It is the purpose of this paper to examine a number of the recent developments in powder metallurgy, being most concerned with those which are yet to prove themselves rather than those which have achi
Jan 1, 1965
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Bulletin 233 Protection of Oil and Gas Field Equipment Against Corrosion
By R. Van A. Mills
Rapid deterioration and destruction of metal equipment in oil and gas fields cause waste of resources and financial losses that must be lessened or eliminated if operations in many important fields ar
Jan 1, 1925
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Notes On Titanium And On The Cleansing Effect Of Titanium On Cast-Iron.
By Bradley Stoughton
(Cleveland Meeting, October, 1912.) [SECRETARY'S NOTE.-To avoid repetition of foot-notes, references to authorities are made in this paper by means of figures, referring to a numbered list in th
Nov 1, 1912
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Propriedades Mecânicas A Altas Temperaturas De Ferros Fundidos Cinzentos Aplicados A Cabeçotes De Motor A Diesel
By Heloíza Döering Gasparin
Os efeitos de elevadas temperaturas e do tempo de exposição sobre as propriedades mecânicas de um ferro fundido cinzento hipoeutético foram avaliados em amostras de dois ferros fundidos da classe FC30
Aug 7, 2018
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Development Of The Bureau Of Mines Gas-Combustion Oil-Shale Retorting Process
By Arthur Matzick
[1-1 1y IilJLJ,I~X" K pl.rw~~ts rt1s11l s I'I.IIIII 1.c1sc.n rcnlb cind d(~\,elopmrnt rnr- ried oitt by tllc* Illll.cv111 of .\li~~css (111 rlrc. ~ns-c-o~l~l)i~s~io~l oil-sllnlr rcdorting proc-rs
Jan 1, 1966