Effects of millisecond-delay intervals on vibration and airblast from surface coal mine blasting /
by John W. Kopp and David E. Siskind.
- Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1986.
- 44 p. : ill. ; 29 cm.
- Report of investigations ; 9026 .
- Report of investigations (United States. Bureau of Mines) ; 9026. .
Bibliography: p. 33-34.
86600038
Coal mines and mining--Safety measures. Strip mining--Safety measures. Blast effect.