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You searched for: All Creators Owings, C. W. (Clarence Watson), 1894-

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Creator Personal:: Owings, C. W. (Clarence Watson), 1894-, Forbes, John J. V. (John Joseph Vincent), 1885-1975.
Title:: Use of rock dust and water under the federal mine safety code in limiting coal-dust explosions.
Call Number:: P19456
Date:: 1947
Description:: Serial issue. Issued as: United States. Bureau of Mines. Information circular, 7421 (1947).
Subject Topical:: Mine explosions., Coal mines and mining--Safety measures.
All:: Mine explosions., Coal mines and mining--Safety measures.

Creator Personal:: Owings, C. W. (Clarence Watson), 1894-, Greenwald, H. P. (Harold Putnam), 1893-, Selvig, W. A. (Walter Alfred), 1886-1972.
Title:: Methods of sampling and analyzing coal-mine dusts for incombustible content.
Call Number:: P19471
Date:: 1940
Description:: Serial issue. Issued as: United States. Bureau of Mines. Information circular, 7113 (1940:July).
Subject Topical:: Coal dust--Sampling., Coal dust--Analysis.
All:: Coal dust--Sampling., Coal dust--Analysis.

Printed Ephemera Collection