Permissible mine equipment approved by the bureau of mines during 1953-62 :a supplement to Bulletin 543

Author:	Lee, F. R.
Additional Authors:	Evans, R. L.
Year:	1964
Document Type:	USBI
Issuing Agency:	Bureau of Mines,
Series:	Information circular / Bureau of Mines ;
Report Number:	8220
Subjects:	Mines and mineral resources--Safety measures
	Mining machinery
Link:	https://hdl.handle.net/2027/mdp.39015078465674