Evaluation of solid-block and cementitious foam seals /
by N.B. Greninger ... [et al.].
- Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1991.
- 13 p. : ill. ; 28 cm.
- Report of investigations ; 9382 .
- Report of investigations (United States. Bureau of Mines) ; 9382. .
Includes bibliographical references.
91016546
Concrete stoppings (Mining)--Testing.
Mine explosions--Prevention.
TN23 TN313 / .U43 no. 9382
622 s 622/.82
I 28.23:9382
Includes bibliographical references.
91016546
Concrete stoppings (Mining)--Testing.
Mine explosions--Prevention.
TN23 TN313 / .U43 no. 9382
622 s 622/.82
I 28.23:9382