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Control of methane by ventilation of shafts during raise drilling / by Slavoljub D. Maksimovic

By: Maksimovic, S. D.
Contributor(s): United States. Bureau of Mines.
Material type: materialTypeLabelBookSeries: United States Bureau of Mines. Information circular no.8847. Publisher: [Washington] : United States Dept. of the Interior, Bureau of Mines, 1981Description: 11 p. : ill. ; 27 cm.Report number: USBM ic-8847Subject(s): Coal mines and mining -- Safety measures | Mine ventilation | Methane | Raise drilling -- Safety measures
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