Assay retort studies of ten typical oil
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W.L. Finley; J.W. Horne; D.W. Gould; A.D. Bauer
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Article
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1924
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Elsevier Science
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English
โ 151 KB
IN the course of experiments on coal-mine ventilation factors which the Bureau of Mines has been conducting for the past two years at its experimental mine near Bruceton, Pa., tests were made in order to determine the leakage of two air-locks which had been placed in the mine. Each air-lock consist