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Abrasive Materials (MATERIALS MINERALS YEARBOOK-1992)
By Gordon T. Austin
The combined value of production of natural abrasives, which include tripoli, special silica stone, garnet, staurolite, and emery, decreased about 24% in 1992. The decrease in the value of tripoli pro
Jan 1, 1992
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Abrasive Materials (MATERIALS MINERALS YEARBOOK-1993)
By Gordon T. Austin
The combined value of production of natural abrasives, which include tripoli, special silica stone, garnet, staurolite, and emery, increased about 4% in 1990. The decrease in the value of tripoli prod
Jan 1, 1993
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Abrasive Materials (Materials Minerals Yearbook-1993)
By Gordon T. Austin
The combined value of production of natural abrasives, which include tripoli, special silica stone, garnet, staurolite, and emery, increased about 4% in 1990. The increase in the value of tripoli prod
Jan 1, 1993
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Abrasive Materials (MINERALS YEARBOOK, 1962)
By James D. Cooper
COMBINED tonnage or natural abrasive materials sold or used in the United States in 1962 was 10 percent greater than that of 1961 and value was 9 percent higher. Production of crude artificial abrasiv
Jan 1, 1963
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Abrasive Materials (MINERALS YEARBOOK, 1963)
By Paul M. Ambrose
ADVANCES in mining and processing technology made it possible to reopen the De Beers diamond mine in South Africa, originally located in 1871 by Cecil Rhodes and closed in 1908. Radioactive material w
Jan 1, 1964
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Abrasive Materials (MINERALS YEARBOOK, 1980)
By NEFE AEWFW
Changes in the 1980 quantity and value of the sales of various natural abrasives, compared with the data for 1979, were of a mixed nature. Output of garnet and special silica stone products increased
Jan 1, 1981
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Abrasive Materials (MINERALS YEARBOOK, 1983)
By J. Fletcher Smoak
Consumption of abrasive materials in the United States increased 22% in value over that of 1982 to $320 million; of which, 59% was manufactured abrasive, 35% was industrial diamond (natural and synthe
Jan 1, 1984
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Abrasive Materials (MINERALS YEARBOOK, 1986)
By Gordon T. Austin
The combined production value of natural abrasives, which consist of tripoli, special silica stone, garnet, and emery, decreased in 1986. Shipments of processed tripoli increased slightly in quantity
Jan 1, 1988
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Abrasive Materials ? General Summary
By Henry P. Chandler
THE year 1950 was one of increased activity in almost all branches of the abrasives industry, with nearly all abrasive materials showing a marked increase in tonnage and value. New records were made I
Jan 1, 1953
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Abrasives (1960)
By Raymond B. Ladoo
Abrasives include the substances, natural or artificial, that are used to grind, polish, abrade, scour, clean or otherwise remove solid material, usually by rubbing action but also by impact (sandblas
Jan 1, 1960
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Abrasives (1983)
By Richard P. Hight
Abrasives include the substances, natural or artificial, that are used to grind, polish, abrade, scour, clean, or otherwise remove solid material, usually by rubbing action but also by impact (pressur
Jan 1, 1983
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Abrasivity and Cutter Life Assessment for TBM Tunneling in Cobbles and Boulders - RETC2021
By Steven W. Hunt, Glen R. Frank
Assessment of abrasivity and cutter life are necessary to properly manage risks when tunneling in mixed face ground which includes ground with cobbles and boulders. Maximizing cutter life requires: (1
Jun 13, 2021
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Abrasivity of Icelandic basalts
By J. -P. Gisiger
On the basis of laboratory test results a comparison of various parameters (unconfined compressive strength, CERCHAR and LCPC abrasivity indexes, mineralogy) is presented and discussed in order to out
Jan 1, 2003
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Abrasão-corrosão Em Corpos Moedores Na Moagem De Minério De Ferro
By Camila Peres Massola
Este trabalho avaliou o efeito da corrosão no desgaste de bolas de aço e de ferro fundido branco de alto cromo durante a moagem de minério de ferro, através de ensaios eletroquímicos e de desgaste em
Aug 16, 2017
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Abrasão-corrosão: Novas Informações A Partir Da Medida Das Forças No Contato
By Marcelo Braga dos Santos
Visando o estudo da sinergia entre abrasão e corrosão concebeu-se um novo instrumento, permitindo a medição das forças que atuam sobre o contacto. O dispositivo consiste de um equipamento de micro-abr
Aug 16, 2017
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Abrief Techno-economic Assessment Of The Provision Of Oxygen To Bio-oxidation cti On Systems For Refractory Sulpiilde Ores
By M. T. Errington, P. C. Miller, W. E. Hardwick
Paper discusses in general terms the techno economic merits of various types of aerated biological reaction systems. The current status of the technology leaves many questions unanswered and hence the
Jan 1, 1998
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Absorbability Of Gases In Casting Copper And Effect Of Adding Cuprosilicon
By O. W. Ellis
THE question of the influence of gases upon the properties of copper has received the attention of a number of investigators, among whom Sieverts,1 Iwasé,2 Lobley and Jepson3 stand preeminent. SOLUBI
Jan 1, 1928
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Abstract of a Paper on the Mines and Works of the Lehigh Zinc Company
By H. S. Drinker
I. The Mines THE first discovery of zinc on the property now worked by this company was made by the celebrated mineralogist, Prof. William Theodore Röpper, in 1845. Different claimants kept the prope
Jan 1, 1873
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Abstract of Remarks on the Difficulties in the Identification of Coal-Beds
By R. P. Rothwell
THE first difficulty mentioned is that in some instances two or more beds of coal separated by sandstone or slate rocks of considerable thickness in one part of a basin, are found running together in
Jan 1, 1873
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Abstract Page (Abstract Page)
By D.G. Osborne
Each month abstracts of the papers selected for the Annual Bound TRANSACTIONS Volume will appear on this page. Since the Annual Bound Volume will not be published until the spring of next year, this w
Jan 1, 1985