Strength characteristics and air leakage determinations for alternative mine seal designs

Additional Authors:	Lipscomb, J. R., Stephan, C. R., Weiss, E. S., Greninger, N. B.
Year:	1993
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I28.23:199
Series:	Report of investigations / Bureau of Mines ;
Report Number:	9477
Subjects:	Concrete stoppings (Mining)--Airtightness--Testing
	Cement composites--Testing
	Foamed materials--Testing
	Wood--Testing
	Coal mines and mining
	Strength of materials
Links:	no.9477 1993
	https://hdl.handle.net/2027/mdp.39015077558966