Engineering methods for the design and employment of wood cribs /
by Thomas M. Barczak and David F. Gearhart.
- Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1993.
- ii, 34 p. : ill. ; 28 cm.
- Information circular ; 9361 .
- Information circular (United States. Bureau of Mines) ; 9361. .
Includes bibliographical references (p. 25).
93011141
Mine timbering--Design and construction. Mine timbering--Testing.