Biblioteca SEGEMAR

Vista normal Vista MARC Vista ISBD

Barczak, Thomas M.

Three-dimensional shield mechanics / by Thomas M. Barczak and W. Scott Burton. - Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1987. - 23 p. : ill. ; 28 cm. - Report of investigations ; 9091 . - Report of investigations (United States. Bureau of Mines) ; 9091. .

Includes bibliographical references.

LCCN: 87600011

Subjects--Topical Terms:
Mine roof control--Testing.
Longwall mining.

LC Class. No.: TN23 TN288 / .U43 no. 9091

Dewey Class. No.: 622 s 622/.28

Gov. Doc. Class. No.: I 28.23:9091