A study of falls of roof and coal, Rock Springs Coal District, Sweetwater County, Wyo.

Author:	Tomlinson, Herbert.
Year:	1933
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines,
SUDOC:	C 22.12:3207
Series:	Report of investigations / United States Department of Commerce, Bureau of Mines ;
Report Number:	3207
Subjects:	Mine roof control
	Mine accidents--Wyoming
	Mine timbering
Link:	https://hdl.handle.net/2027/mdp.39015077563016