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Anthracite mechanical mining investigations. Progress Report 4, Status of Bureau of Mines underground experimental work with lightweight shearing machines in pitching anthracite beds / by John W. Buch, Andrew Allan, Jr., and Russell S. Davies.

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Online Access:	Search for the full-text version of this title in HathiTrust
Main Author:	Buch, John W. (John Willard)
Other Authors:	Allan, Andrew, Davies, Russell S.
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1951.
Series:	Report of investigations (United States. Bureau of Mines) ; 4798.
Subjects:	Mining machinery > Cutter bars > Testing. Coal-mining machinery. Anthracite coal industry > Equipment and supplies.

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Call Number:	I 28.23:4776-4800
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