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Differential Crystallization In A Cast-Steel RunnerBy Francis Foley
IN examining steel under the microscope, one is constantly confronted with structures that are difficult to interpret. Recently, in a collection of samples for exhibition purposes, the writer found ap
Jan 7, 1919
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Proceedings Of The Board Of DirectorsBy AIME AIME
The following acts of the Directors are reported for the information of members:¬ At a meeting held November 3, 1905, Messrs. Henri Le Chatelier, of Paris, France, and Andrew Carnegie, of New York, N
Mar 1, 1906
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Florida Paper - Treatment of Roasted Gold-Ores by Means of BromineBy Richard W. Lodge
Mr. H. R. Batcheller, of the class of 1894, Massachusetts Institute of Technology, while experimenting with chlorine gas on a certain lot of roasted concentrates, met with the following difficulties:
Jan 1, 1896
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The Future Gold-Output Of Colombia.By Henry G. Granger
A RESIDENCE of 14 years in the Republic of Colombia, spent in almost continuous traveling and prospecting-trips, has given me an intimate knowledge of the resources of that wonderful country. The man
Sep 1, 1908
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Review of the Coal Industry in 1930By HOWARND N. EAVENSON
THE year 1930 resembled the preceding one in the coal industry in continuing the era of falling prices and 'of the abandonment of unprofitable mines. Practically all coal prices fell, and in the
Jan 1, 1931
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Stripping Pitching Beds In Pennsylvania's Anthracite RegionBy 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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Albany Paper - The Cost of Pumping at the Short Mountain Colliery of the Lykens Valley Coal CompanyBy R. V. Norris
The great coal strike of 1902, which confined the work at the Short Mountain colliery of the Lykens Valley Coal Com pany almost exclusively to pumping, gave an opportunity to determine with considerab
Jan 1, 1904
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Preparing for the MSHA InspectionSafety and health are no longer secondary responsibilities but must be of paramount concern to every mining operation, according to Anthony J. Thompson, an attorney with Hamel, Park, McCabe & Saunders
Jan 11, 1979
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Canadian Paper - The Iron-Mines of Hartville, WyomingBy H. M. Chance
The iron-ore deposits of the Hartville district are located near the new town of Guernsey, about 100 miles north of Cheyenne. The writer has been familiar with them since 1887, having visited the dist
Jan 1, 1901
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Old Charcoal Blast Furnaces in KentuckyBy Ralph H. Sweetser
N Greenup and Carter counties, in the northeastern part of Kentucky, are the remains of many old charcoal furnaces built and operated during the period from 1818 to 1892. They were all included in wha
Jan 1, 1931
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The Institute Meets at PittsburghBy AIME AIME
THE official opening at the 134th general meeting of the Institute was held on Oct. 6, but it was prefaced by two round table conferences on Oct. 5. The open-hearth group held the fourth of their semi
Jan 1, 1926
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Philadelphia Paper - The Manufacture of Bessemer Pig Metal at the Fletcherville Charcoal Furnace near Mineville, Essex County, New YorkBy T. F. Witheree
The Fletcherville Furnace was built in 1864 and 1865, making its first blast from August until October of the latter year, when it was blown out to prevent its " bunging-up." Repairs were made in time
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Papers - Constitution of Alloys - Equilibrium Relations in Aluminum-copper-magnesium and Aluminum-copper- magnesium Silicide Alloys of High Purity (With Discussion)By E. H. Dix
The work of Merical and other investigators indicates that the phenomenon of age-hardening in alloys of the duralumin type is primarily dependent upon the variation in the solubility of copper with te
Jan 1, 1932
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The Petroleum Industry in 1933 ? Domestic ProductionBy W. E. Wrather
CURTAILMENT of production was a matter of far more serious concern to the oil industry through 1933 than the search for new supplies of oil. The huge reserves of crude, built up during past years, ins
Jan 1, 1934
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FMC Corporation's North Carolina Phosphate Research ProjectBy Lewis Robert M.
The importance of phosphate in feeding the people of the world has been recognized by mining companies as they continue their search for new ore deposits and ways of improving phosphate production. An
Jan 1, 1975
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A New Catalyst for Sulfuric-Acid ManufactureBy AIME AIME
S ULFURIC acid made in the United States during the last four years has averaged approximately 7,000,000 tons of 50" B6 acid a year. This is double the production of the year 1913. About 66 per cent o
Jan 1, 1929
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Natural Gas Technology - Viscosity of Natural GasesBy B. E. Eakin, A. L. Lee, M. H. Gonzalez
Expeximental viscosity and density data of lour natural gases are presented for temperatures from WO to 340F and pressures from 100 to 8.000 psia. A correlation is also discussed and results reported.
Jan 1, 1967
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Fall Meeting of the Industrial Minerals Division at Penn StateBy AIME AIME
A THOROUGHLY satisfactory crowd turned out at the fall meeting of the Industrial Minerals Division and took an active part in the entire program. On Thursday afternoon, Sept. 24, a limestone plant was
Jan 1, 1936
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Unsuccessful Ventures (eaf809f9-9a73-4906-9ae0-29c50f19a11b)By Thomas T., Read
THROUGHOUT the Colonial era, Philadelphia was easily , the leading city of North America, and it still held that position at the end of the period, with a population of about 25,000, though closely pr
Jan 1, 1941