Comparative shortwall and room-and-pillar mining costs
By: by L. E. Green and E. R. Palowitch.
Contributors: Palowitch, Eugene R.; United States. Bureau of Mines.
Series: Information circular - Bureau of Mines ; 8757; Information circular (United States. Bureau of Mines) -- 8757.
Publisher: Dept. of the Interior, Bureau of Mines
Published: 1977
Place of publication: [Washington]
Language: eng
Number of pages: 20
Subjects: Mining engineering.; Pillaring (Mining).
Notes: Work upon which report is based done under cooperative agreement between Bureau of Mines and Beth-Elkhorn Corp.

Includes bibliographical references.