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Coal Washers of the Classifier Type
By John Griffen
HYDRAULIC classification as explained by Rittinger and others was largely restricted to conditions wherein the free-falling velocities of the particles were conceived as governing the separations effe
Jan 1, 1943
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Corrosive And Erosive Wear In Magnetic Taconite Grinding ( May 1984 Minerals And Metallurgical Processing )
By K. A. Natarajan, S. C. Riemer, I. Iwasaki
The relative significance of corrosive and erosive wear in magnetic taconite grinding is examined. The influence of different types of aeration (nitrogen, air, and oxygen) on ball wear was established
Jan 1, 1985
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Use of Optical Pyrometers for Control of Optical-glass Furnaces
CLARENCE N. FENNER.-Mr. Gelstharp, chief chemist of the Pitts-burgh Plate Glass Co., has directed my attention to the fact that that company was using optical pyrometers obtained from the Leeds & Nort
Jan 12, 1919
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An Economic Evaluation of Higher Voltages for Stripping Machines
By Robert W. Bergmann
Twenty years ago, the standard voltage for stripping machines was 4160 v and few people even thought of using a higher voltage. It was adequate for the machines of the day, which seldom exceeded 2500
Jan 12, 1972
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Hot-Dip Galvanizing-Zinc's Biggest Consumptive Use
By John G. McLain
OF all the zinc that the world consumed in 1936-'38 the United States took about 31 per cent, and almost 14 per cent of the world's zinc supply in that period was used for galvanizing purpos
Jan 1, 1941
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Cartels-Their Significance for American Business
By AIME AIME
FREE competition, long the controlling ideal of domestic trade within the United States, has had the fundamental geographical advantage of functioning in the world's largest area of unrestricted
Jan 1, 1944
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Colorado Paper - Progress of Metallurgical Science in the West
By Richard Pearce
I am deeply sensible of the honor you have conferred on me in electing me your president for this year. It is difficult to understand why I have merited such distinction at your hands, except that I m
Jan 1, 1890
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Production - Domestic - Oil and Gas Development in South Texas during 1941
By James J. Halbouty, Michel T. Halbouty
Drilling activity in the South Texas area, which includes the South Corpus Christi and Laredo districts, showed a marked decline during 1941 from that of the preceding year. The rate of new discoverie
Jan 1, 1942
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Production - Domestic - Oil and Gas Development in South Texas during 1941
By James J. Halbouty, Michel T. Halbouty
Drilling activity in the South Texas area, which includes the South Corpus Christi and Laredo districts, showed a marked decline during 1941 from that of the preceding year. The rate of new discoverie
Jan 1, 1942
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Reports of A.I.M.E. Annual Meeting
By AIME AIME
PRACTICALLY all the Section delegates as well as a sprinkling of Institute officers and mere members were on hand for the annual business meeting of the Institute on Monday afternoon of the Annual Mee
Jan 1, 1943
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Recent Developments In Open-Hearth Steel-Practice.
By N. E. Maccallum
(Cleveland Meeting, October, 1912.) ALMOST half a century has passed since the Siemens brothers, after tedious and costly experiments, finally began the manufacture of open-hearth steel. The furnace
Oct 1, 1912
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Operations At The Old Eureka Mine (038db63b-9ef5-483a-9b16-8249ab86cdff)
By L. A. Norman
ANOTHER chapter in the history of Mother Lode mining is being written by operations in the Old Eureka mine near Sutter Creek, Amador County, California. During a two-year period (1938-1939), 85,517 to
Jan 1, 1939
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Preliminary Annual Meeting Program
By AIME AIME
THE Annual Meeting-numerically the 162d meeting-of the American Institute of Mining and Metallurgical Engineers will be held at the Pennsylvania Hotel, 7th Ave. and 33d St., New York, Feb. 18-22, with
Jan 1, 1945
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Place of Government, State and Federal, in Rationalizing Mineral Production
By C. K. Leith
OTHERS here are far better qualified than I to discuss some of the specific proposals for government regulation of the oil industry. I shall make no attempt to carry oil to Oklahoma. The question of p
Jan 1, 1932
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131st Meeting of the A. I. M. E.
By AIME AIME
THE 131st meeting of the American Institute of Mining and Metallurgical Engineers was held in New York on Feb. 16 to 20, 1925, with the largest registration of any previous meeting, the total being 13
Jan 1, 1925
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Use Of Jumbo Drilling Machines In The Tri-State District
By S. S. Clarke
LATE in 1942, the increasing demand for zinc, coupled with the growing shortage of miners and the knowledge that some abandoned mines would have to be reopened for prospecting and development, led to
Jan 1, 1947
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Members, Associates and Junior Associates - Alphabetical List
IlAbad, Leopoldo F , Min Engr , Div of Mines, Bureau of Science, Manda, P I '23 ||Abadilla, Quince, A , Cia Minera de Petrolco El Aguila, S A Box 86, Puerto Mexico, Ver , Mexico '20 ||Ab
Jan 1, 1923
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Coal Industry Has Biggest Peacetime Year
By Evan Evans
IT is appropriate to evaluate 1947 in review as a year of a peacetime record production of about 676,000,000 tons of coal (anthracite and bituminous), closely approaching the extraordinary wartime out
Jan 1, 1948
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Some Effects Of Sewickley Seam Mining On Later Pittsburgh Seam Mining
By F. R. Zachar
IT has always been understood, in northern West Virginia where both the Pittsburgh and Sewickley seams are mined, that pillaring or splitting in the lower Pittsburgh seam could break the interval stra
Jan 1, 1952
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Reminiscences of Leadville
By F. L. Sizer
SOME old-time views which have recently come into my possession have inspired me to record that part of the early history of Leadville, Color- ado, with which I am familiar, the years 1878 to 1882, in
Jan 1, 1924