Fires, gases, and ventilation in metal and nonmetallic mines

Year:	1957
Document Type:	N/A
Issuing Agency:	United States. Bureau of Mines.
SUDOC:	I 28.6:55/957
Series:	Miners' circular (United States. Bureau of Mines)
Subjects:	Mine safety -- United States.
	Mine fires -- United States -- Prevention and control.
	Mine gases -- United States.
	Mine ventilation -- United States.
Link:	https://digital.library.unt.edu/ark:/67531/metadc40320/