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Characteristics Of Coal And Its Associated Impurities
By M. R. Geer, J. D. Davis, H. F. Yancey
ALTHOUGH the mechanical cleaning of coal is carried out at plants on the surface, preparation is actually begun at the face in the mine. Here the character of the coal and the amount, character, and d
Jan 1, 1943
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Chicago Paper - Federal Taxation of Mines (with Discussion)
By L. C. Graton
The federal taxes on incomes and excess profits are of course heavy. In 1917, the value of the mineral production of the United States was a little in excess of $5,000,000,000. The total of federal ta
Jan 1, 1923
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Chicago Paper - Federal Taxation of Mines (with Discussion)
By L. C. Graton
The federal taxes on incomes and excess profits are of course heavy. In 1917, the value of the mineral production of the United States was a little in excess of $5,000,000,000. The total of federal ta
Jan 1, 1923
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Formation And Decomposition Of Zinc Ferrite
By Carl Swartz
METALLURGISTS differ considerably in their opinions regarding the effect, if any, of small amounts of iron pyrites, or other iron compounds on zinc sulfide ores during the roasting operation. As a res
Jan 1, 1927
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Officers and Committees of Local Sections (14a8eddf-97ba-418a-b8a7-e38369a848dd)
COUNCIL OF SECTION DELEGATES A J Duff G H Ruggles E D Gardner E H Torgersen F W Strandberg, Chairman W I Garms H C Weed R D Chapman, Vice-Chairman H M Lavender J A Wilcox F T Moyer. Secretary W C
Jan 1, 1951
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Preparation At The Face
By M. H. Forester, John D. Cooner
ANTHRACITE ALTHOUGH the unmined anthracite will last for approximately 150 years, most of the thicker and cleaner coal beds have been almost entirely first-mined and pretty well robbed, leaving muc
Jan 1, 1943
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Beryllium Developments and the Outlook for Supply
By G. B. Sazuyer
DEVELOPMENTS respecting beryllium during the past year have been sufficient to center attention on it as likely to be the most important of any of the chemical elements that have recently found a plac
Jan 1, 1934
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Geophysics (450c9da8-af57-491d-8fc3-1f2fde1f1923)
By Kenneth L. Cook
GEOPHYSICAL exploration is continuing to expand in scope and variety of methods, in experimental studies of specific applications, and in development of theory for complex situations. Aerial surveys h
Jan 2, 1954
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New York Meeting, February 17-20, 1919
In preparation for the 118th meeting, New York, Feb. 17 to 20, 1919, the following committees have been appointed: Committee on Arrangements ALLEN H. ROGERS, Chairman. W. S. Dickson, Secretary. J.
Jan 8, 1918
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Butte Paper - The Great Falls System of Concentration
By Albert E. Wiggin
PagE I. Early History of Boston & Montana Mill at Great Falls (1891 to 1905). 210 a. Original Mill Built in 1891.........210 b. Coarser Concentration Tried...211 c. Screen Sizing of Fine Jig F
Jan 1, 1914
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Manganese In Non-Ferrous Alloys (aeb3ad34-a20a-45d6-9362-45fc53c99998)
By M. G. Corson
INFORMATION regarding the use of manganese alloys has hitherto been incomplete and available only from widely scattered sources. This paper attempts a systematic description of properties and uses of
Jan 5, 1927
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The Occurrence Of Covellite At Butte, Mont.
By A. Perry Thompson
I. GENERAL DISTRIBUTIONS APPEARANCE, AND RELATIONS MINING in Butte has seldom encountered covellite in commercial quantities. The notable occurrences, extending vertically and laterally perhaps sever
Jan 4, 1915
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Papers - Ductile Tantalum and Columbium (With Discussion)
By Clarence W. Balke
Small buttons of fused tantalum have been produced by are fusion in a vacuum, by drawing an arc between sticks of pressed tantalum and a tantalum-faced water-cooled copper block. However, ingots of ap
Jan 1, 1938
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Papers - Ductile Tantalum and Columbium (With Discussion)
By Clarence W. Balke
Small buttons of fused tantalum have been produced by are fusion in a vacuum, by drawing an arc between sticks of pressed tantalum and a tantalum-faced water-cooled copper block. However, ingots of ap
Jan 1, 1938
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Ductile Tantalum and Columbium
By Clarence Balke
SMALL buttons of fused tantalum have been produced by are fusion in a vacuum, by drawing an arc between sticks of pressed tantalum and a tantalum-faced water-cooled copper block. However, ingots of ap
Jan 1, 1938
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Ductile Tantalum And Columbium
By Clarence W. Balke
SMALL buttons of fused tantalum have been produced by arc fusion in a vacuum, by drawing an arc between sticks of pressed tantalum and a tantalum-faced water-cooled copper block. However, ingots of ap
Jan 1, 1938
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Discussion Of Institute O,F Metals And Iron And Steel Papers Presented At The New York Meeting, February, 1922
McCulloch, Leon.-Experiments with Sherardizing. Discussed by Fred. L. Wolf, Willis M. Peirce, Jesse L. Jones, O. W. Storey, David R. Kellogg, William H. Finkeldey, L. H. Marshall 2 Bassett, W. H. and
Jan 5, 1922
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New York Paper - Modern Gas-Power Blower Stations
By Arthur West
It is the purpose of this paper to describe briefly some recent large power stations for blast furnaces, where the blast is exclusively supplied by gas engines using furnace gas. The stations are give
Jan 1, 1915
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New York Meeting, February 17-20, 1919 (e3eaf41d-6f71-40cc-a4cd-ed63fac53648)
In preparation for the 118th meeting, New York, Feb. 17 to 20, 1919, the following committees have been appointed: Committee on Arrangements ALLEN H. ROGERS, Chairman. W. S. DICKSON, Secretary. J.
Jan 9, 1918