Short-delay blasting in underground coal mines
By: by Richard J. Mainiero and Harry C. Verakis.
Contributors: Verakis, Harry C., 1942-; United States. Bureau of Mines.
Series: Information circular -- 9064.; Information circular (United States. Bureau of Mines) -- 9064.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1986
Place of publication: Pittsburgh, Pa
Language: eng
Number of pages: 12
Subjects: Blasting -- Safety measures.; Bituminous coal.; Coal mines and mining -- Safety measures.
Notes: Distributed to depository libraries in microfiche.

Bibliography: p. 12.