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Safety In Mining At The Andes Copper Mining Company's Property, Potrerillos, Chile
By C. M. Brinckerhoff
Safety work in mining at the Andes Copper Mining Company, Potrerillos, Chile, is divided into three parts: (1) accident prevention, (2) fire prevention and protection, and (3) silicosis prevention and
Jan 1, 1949
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60. Copper-Molybdenum Mineralization at Mineral Park, Mohave County, Arizona
By D. M. Clippinger, J. J. Eidel, J. E. Frost
At Ithaca Peak, one of three peaks situated on Duval Corporation's Mineral Park property, a 'Single pulse of quartz monzonite magma intruded the isoclinally folded Precambrian Cerbat complex consistin
Jan 1, 1968
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Deformation Lines In Cold-Rolled Copper And Its Binary Alpha Solid Solution Alloys With Aluminum, Nickel And Zinc
By H. P. Moore, R. W. Fenn, Harold Margolin, W. R. Hibbard
DEFORMATION lines, also called etch markings or strain markings, are noneffaceable lines developed in individual grains by etching a metal specimen which has been cold worked sufficiently to cause ato
Jan 1, 1948
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New York - Philadelphia Paper - The Tombstone, Arizona, Mining District
By John A. Church
Jan 1, 1903
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Rare Metal Developments
By Donald M. Liddell, G. C. RIDDELL
THE cosmic ray continues to engage the attention of the physicists, and according to Millikan and Compton, experiments of the past summer indicate that these rays must come from interstellar space, bu
Jan 1, 1932
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Nonmetallic Industries
By Samuel H. Dolbear
NOT WITHSTANDING the extremely low ebb of business activity, the nonmetallic industries have fared somewhat better than some other branches of mining. The average price level in nonmetallics, although
Jan 1, 1933
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Beneficiation of Nonmetallics
By Paul M. Tyler
THE winning of metals from Nature has been advanced to a degree of efficiency that commands admiration even in this Machine Age. Economy of human effort underground, in surface plants, and in treatmen
Jan 1, 1935
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Water-Chief Problem in Anthracite Mining
By S. H. Ash
IN no part of the world other than a small area in Pennsylvania is anthracite mining an industry of major magnitude. As the deposits of anthracite in the United States are limited virtually to Pennsyl
Jan 1, 1941
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Growth of Metallic Crystals
By Cecil H. Desch
THE progress of metallurgical practice and the demands made by the engineering industry on our foundries and mills have made the crystalline structure of metals a subject of far more than academic int
Jan 1, 1927
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New York Paper - Path of Rupture in Steel Fusion Welds (with Discussion)
By S. W. Miller
Most of the steel welding done at the present time is in material containing not over 0.3 per cent. carbon, and the tests here described were in similar material. These tests are not as yet completed
Jan 1, 1920
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Mineral Beneficiation: A Perspective
By Nathaniel Arbiter
There is a history in all men's lives, Figuring the nature of the times deceas'd, The which observ'd, a man may prophesy, With a near aim, of the main chance of things. W. Shake
Jan 1, 1971
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New York Paper - Basic Refractories for the Open Hearth (with Discussion)
By R. M. Howe, J. Spotts McDowell
Preparation and Use.—Magnesite is an important refractory in open-hearth, heating, and electric furnaces for steel-making and in many of those employed in the metallurgy of copper and lead. It is sold
Jan 1, 1920
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Announcements.
By AIME AIME
Award of a Gold Medal : to the Institute. The Jury of Awards of the Jamestown Ter-Centennial Exposition has conferred a gold medal, the highest distinction within its power,. on the American Institut
Jan 7, 1908
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Liquid Oxygen Explosive In Strip Coal Mining (7a62dced-c96a-4912-84d4-47ed1cc6a3d2)
By George Holderer
THE Enos Coal Mining Co. owns an area underlaid by coal, of approximately 5000 acres. This property is situated 9 miles from Oakland City, in the southern part of Indiana. The mine has been in operati
Jan 1, 1927
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Bismuth (eeeee876-a123-45df-9a54-c7a982ed032d)
By Walter C, Smith
Metallic bismuth was known in the Middle Ages and the name is supposed to come from the German Wismut. The origin of the German name is uncertain. References to bismuth are found in the writings of Va
Jan 1, 1953
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Ceramic Materials Other Than Clays Abundant in California
By B. M. Burchfiel
CALIFORNIA possesses such an abundance of ceramic materials other than clays, that she is quite independent of other states and foreign countries so far as these materials are concerned. Certain users
Jan 1, 1936
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Development And Operation Of Sulphur Deposits In The Louisiana Marshes
By C. O. Lee, Z. W. Bartlett, R. H. Feierabend
DESPITE the fact that American brimstone production has increased 2 ½ times since the prewar period 1935-1939, the demand for sulphur exceeds the supply. To alleviate this situation efforts are being
Jan 1, 1952
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Plentiful Supply of Nonmetallic Minerals Aids War Effort
By Paul M. Tyler
FOR the same reason that water is not missed until the well runs dry, the roles of many industrial minerals in wartime are often overlooked. In contrast to the growing shortages of many metals, our su
Jan 1, 1942
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Concentrating Gold in Copper Converting
By G. M. Lee
SEVERAL improvements have been made in Granby smelting practice since the company abandoned the direct smelting of raw ore in the blast furnaces in June, 1927, in favor of sintered concentrate. These
Jan 1, 1935
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Colorado Paper - Discussion of Mr. Laudig's paper on Action of Blast-Furnace Gases Upon Iron- Ores (see p. 269)
F. E. BACHMAN, Buffalo, N. Y. (Communication to the Secretary) : The investigation so fully described by Mr. Laudig was undertaken with the idea of determining if it is possible to learn by expesiment
Jan 1, 1897