Hydraulic mining of anthracite :analysis of operating variables

Author:	Malenka, Wilbert T.
Year:	1968
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:7120
Series:	Report of investigations / Bureau of Mines ;
Report Number:	7120
Subjects:	Anthracite coal
	Hydraulic mining
Link:	https://hdl.handle.net/2027/mdp.39015078526400