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Short-delay blasting in underground coal mines / by Richard J. Mainiero, Harry C. Verakis.

By: Mainiero, Richard J.
Contributor(s): Verakis, Harry C.
Material type: materialTypeLabelBookSeries: United States Bureau of Mines. Information circular 9064. Publisher: Pgh. [i.e. Pittsburgh] Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1986Description: 12 p. : ill., tables ; 28 cm.Report number: USBM ic-9064Subject(s): Blasting -- Safety measures | Bituminous coal | Coal mines and mining -- Safety measures
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