Biblioteca SEGEMAR

Vista normal Vista MARC Vista ISBD

Simpson, R. E. 1920-

Inorganic cement for mine roof-bolt grouting / by R. E. Simpson, J. E. Fraley, and D. J. Cox. - Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1980. - ii, 32 p. : ill. ; 27 cm. - Report of investigations ; 8494 . - Report of Investigations (United States. Bureau of Mines) ; 8494. .

Bibliography: p. 29.

LCCN: 80607899

Subjects--Topical Terms:
Mine roof bolting.
Grouting.
Portland cement--Testing.
Gypsum--Testing.

LC Class. No.: TN23 TN289.3 / .U43 no. 8494

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

Gov. Doc. Class. No.: I 28.23:8494