Grinding pebbles and tube-mill liners

Author:	Metcalf, Robert D.
Year:	1940
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7139
Series:	Information circular / Bureau of Mines ;
Report Number:	7139
Subjects:	Grinding anf polishing
	Pebbles
Link:	https://hdl.handle.net/2027/mdp.39015078534420