Mechanical mining in some bituminous-coal mines.
Progress report 5,
Extraction of pillars with mechanized equipment /
by Louis A. Turnbull and Albert L. Toenges.

Description

Main Author

Turnbull, Louis A.

Related Names

Toenges, Albert L. (Albert Louis), 1889-
United States. Bureau of Mines.

Language(s)

English

Published

Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1949.

Subjects

Coal mines and mining > Coal mines and mining / Equipment and supplies.
Bituminous coal.

Physical Description

59 p. : ill. ; 26 cm.

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