Biblioteca SEGEMAR

Vista normal Vista MARC Vista ISBD

Smith, W. C. 1955-

Roof control strategies for underground coal mines / by William C. Smith. - Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1993. - 17 p. : ill. ; 28 cm. - Information circular ; 9351 . - Information circular (United States. Bureau of Mines) ; 9351. .

Includes bibliographical references (p.16-17).

LCCN: 93002742

Subjects--Topical Terms:
Mine roof bolting.
Mine roof control.
Coal mines and mining.

LC Class. No.: TN295 TN289.3 / .U4 no. 9351

Dewey Class. No.: 622 s 622/.334