Survey of practices in controlling roof at intersections and junctions in underground coal mines /
by R. Ward Stahl.

Description

Main Author

Stahl, R. Ward.

Related Names

United States. Bureau of Mines.

Language(s)

English

Published

Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1962.

Subjects

Coal mines and mining > Coal mines and mining / Safety measures.
Mine roof bolting > Mine roof bolting / Testing.
Mine roof control.

Physical Description

13 p. : ill. ; 26 cm.

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