Control of methane by ventilation of shafts during raise drilling /

Bibliographic Details
Main Author:	Maksimovic, S. D.
Corporate Author:	United States. Bureau of Mines
Format:	Government Document Book
Language:	English
Published:	Pgh. [i.e. Pittsburgh], Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1981.
Series:	Information circular (United States. Bureau of Mines) ; 8847.
Subjects:	Coal mines and mining > Safety measures. Mine ventilation. Methane. Raise drilling > Safety measures.

Description
Physical Description:	11 pages : illustrations ; 27 cm.
Bibliography:	Includes bibliographical references.