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Early Mining Reminiscences
By F. W. Bradley
MY first Nevada City mining reminiscence is one of seeing Capt. Thomas Mein, over 52 years ago, in the old Wyoming mill on Deer Creek about a mile below the town of Nevada City. Captain Mein was then
Jan 1, 1929
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The Direct Determination Of Small Amounts Of Platinum In Ores And Bullion.
By Frederic P. Dewey
(New York Meeting, February, 1912.) By the old method of determining platinum in ores and bullion, the silver-alloy first obtained in the regular course of assay is parted in strong sulphuric acid an
Apr 1, 1912
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Foreign Iron Blast-Furnace Practice
By Wm. A. Haven
ON the northern part of the globe, almost since the earliest days of mankind's history. ironmaking has been practiced in one form or another. Some investigators question the generally accepted be
Jan 1, 1940
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19. Fluorite-Zinc-Lead Deposits of the Illinois-Kentucky Mining District
By Robert M. Grogan, James C. Bradbury
The Illinois-Kentucky mining district has, since 1880, accounted for 80 per cent of all U.S. production of fluorspar. The ore deposits are of two types: vein deposits formed by fissure fillings along
Jan 1, 1968
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Features Incorporated In The Design Of Lone Star's Two New Dry Process Cement Plants
By Claiborne C. Van Zandt
THE heavy postwar demand for Portland Cement has created shortages that are gradually being overcome by increases in plant capacity. In the post-war period, the Lone Star Cement Corp. has expanded s
Jan 1, 1952
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Mining Geology - Mining Districts and Their Relation to Structural Geology (with Discussion)
By J. J. Beeson
For the past fifty years or more, the structural features of the Cordil-leran mountain system of western United States have presented some most interesting problems. Any geologist or engineer living i
Jan 1, 1927
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Face To Face Longwall Moves At Inland Steel Coal's Lancashire No. 25
By D. N. Hedges
This paper discusses the actual recovery and installation of a longwall in a bituminous coal mine in western Pennsylvania. The coal bed mined is in the Lower Freeport seam, which averaged 1.07 m (42 i
Jan 1, 1985
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What the College Expects of the .Operating Companies in Receiving and Training Its, Graduates
By W. B. Plank
I HAVE been asked by the Chairman of the Engineering Education Committee to outline what the engineering colleges would like the mining companies to do with the young engineer just, out of college. It
Jan 1, 1929
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Iron Ore Beneficiation
By Clyde E. Williams
MUCH has been said recently concerning the depletion of the Lake Superior iron ore re- serves. Estimates given indicate a total life of the present known reserves of twenty to thirty years. Some argue
Jan 1, 1931
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Part XII - Papers - The Diffusion of Carbon in Tantalum Monocarbide
By L. Seigle, R. Resnick
An inert-marker movement experiment indicates that the ratio of the intrinsic diffusion coefficients DC:DTa = 80:l in TaC at 2500°C. Measurements of the diffmion coefficient of carbon in nonstoichiome
Jan 1, 1967
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13. The Mascot-Jefferson City Zinc District, Tennessee
By Johnson Crawford, Alan H. Hoagland
Zinc mining at Jefferson City began in 1854 with small scale production of oxidized ore from open pits. Significant production began in 1913 with the development of the Mascot Mine by the American Zin
Jan 1, 1968
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History Of Pumping At The Chief Consolidated Mine, Eureka, Juab County, Utah
By John G. Hall
The pumping operations at the Chief mine have been unique in the respect that for many years the entire flow of water into the mine has been disposed of by pumping into natural underground " caverns"
Jan 1, 1949
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Refining and Precipitation in the Tonopah District of Nevada
By F. C. NINNIS
AT THE Belmont mill, the pregnant solution is de¬livered to a 30 by 10-ft. tank, from which it is pumped to three Merrill clarifying presses of the sluice-bar type, whence it flows through the meter t
Jan 1, 1921
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Proposed Use of Oxygen in the Open-hearth Furnace
By Sidney Cornell
THE technical- advantages of adding oxygen to air and producer gas, or using it as a reactive agent, producing 400 B.t.u. gas instead of. the present 150 B.t.u., with higher flame temperatures and a r
Jan 11, 1924
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Brazil's Geophysical Prospecting Program
By Mark C. Malamphy
AT present the Federal Government represents the only organization applying geophysical methods of prospecting in Brazil. The geophysical work of the National Department of Mineral Production, which w
Jan 1, 1936
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Stripping Pitching Beds In Pennsylvania's Anthracite Region
By O. W. Shimer, D. C. Helms, C. E. Brown
THE early history and progress of anthracite stripping, from the first known operation at Summit Hill in 1821 through 1917, was covered in 1917 in a paper by J. B. Warriner,1 then chief engineer, now
Jan 1, 1944
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Extractive Metallurgy Division - Vacuum Treatment of Parkes' Process Crusts on a Pilot-Plant Scale
By A. W. Schlechten, R. F. Doelling
Parkes' process crusts were vacuum distilled using a shortened Pidgeon retort. Zinc was effectively removed below 800°C and recovered as a zinc sheet easily stripped from the furnace liner. Lead
Jan 1, 1952
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Index (Transactions and other A.I.M.E. Publications for 1930)
[Separates of all the Technical Publications published in 1930 are available at Institute headquarters. All the papers are on file in public, university and technical libraries, and when so indicated
Jan 1, 1930
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Institute of Metals Division - Thermal Expansion of CdS from 26° to 1000°K
By B. A. Kulp, R. R. Reeber
Lattice parameters for the wurtzite form of' CdS mere measured by powder X-ray diffraction techniques over the temperature range 26° to 1000 K'. A negative thermal -expansion coefficient was
Jan 1, 1965