Yieldable steel arches and yieldable steel ring supports in metal mines /
by N.A. Eilertsen.

Description

Main Author

Eilertsen, Nils A.

Language(s)

English

Published

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

Subjects

Metal arches.
Mining engineering.

Physical Description

iii, 55 p. : ill. ; 26 cm.

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