Strenght characteristics and air-linkage determinations for alternative mine seal designs /
by E.S. Weiss ... [et al.].
- Avondale, Md. : U.S. Dept. of the Interior, Bureau of Mines, 1993.
- 21 p. : ill.
- Report of investigations ; 9477 .
- Report of investigations (United States. Bureau of Mines) ; 9477 .
Mines and mineral resources.
Concrete mine stoppings (Mining)--Testing.
Cement composites--Testing.
Foamed materials--Testing.
Wood--Testing.
Strenght of materials.
Coal mines and mining.
Mines and mineral resources.
Concrete mine stoppings (Mining)--Testing.
Cement composites--Testing.
Foamed materials--Testing.
Wood--Testing.
Strenght of materials.
Coal mines and mining.