Use of sheathed explosive charges on longwalls
By: by Richard J. Mainiero and Lon D. Santis.
Contributors: Santis, Lon D.
Series: Report of investigations (United States. Bureau of Mines) -- no.9294.
Publisher: Dept. of the Interior
Published: 1989
Place of publication: Washington, DC
Language: eng
Subjects: Coal mines and mining -- Explosives -- Testing; Longwall mining.
Other titles: Sheathed explosive charges on longwalls.
Notes:  89600272  t_oclc

Bibliogr.

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