Some information on reduction of quarry accidents

Author:	Cash, Frank E.
Year:	1940
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7114
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7114
Subjects:	Quarries and quarrying--Safety measures--United States
	Quarries and quarrying--Accidents--United States
	Mine accidents
Link:	https://hdl.handle.net/2027/mdp.39015078534255