Volkwein, J. C.
A method to eliminate explosion hazards in auger highwall mining / by Jon C. Volkwein and James P. Ulery. - Washington, D.C. : Bureau of Mines, U.S. Dept. of the Interior, 1993. - 14 p. : ill. ; 29 cm. - Report of investigations ; 9462 . - Report of investigations (United States. Bureau of Mines) ; 9462. .
Includes bibliographical references (p. 14).
92042010
Mine explosions--Prevention.
Gases, Rare--Testing.
Coal augers.
TN23 / .U43 no. 9462
622 s 622/.83
A method to eliminate explosion hazards in auger highwall mining / by Jon C. Volkwein and James P. Ulery. - Washington, D.C. : Bureau of Mines, U.S. Dept. of the Interior, 1993. - 14 p. : ill. ; 29 cm. - Report of investigations ; 9462 . - Report of investigations (United States. Bureau of Mines) ; 9462. .
Includes bibliographical references (p. 14).
92042010
Mine explosions--Prevention.
Gases, Rare--Testing.
Coal augers.
TN23 / .U43 no. 9462
622 s 622/.83