Quarry accidents in the United States :during the calendar year 1921

Author:	Adams, William W.
Year:	1923
Document Type:	USBM
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines :
SUDOC:	I 28.7:329
Series:	Technical paper / United States Department of the Interior, Bureau of Mines ;
Report Number:	329
Subjects:	Quarries and quarrying--United States
	Mine accidents
Link:	https://hdl.handle.net/2027/mdp.39015077568171