What a miner can do to prevent explosions of gas and of coal dust

Author:	Rice, George S.
Year:	1915
Document Type:	MAIN
Issuing Agency:	Govt. Print. Off.,
Series:	Miners' circular ;
Report Number:	21
Subjects:	Mine explosions
	Coal mines and mining--Safety measures
Link:	https://hdl.handle.net/2027/mdp.39015077562109