Advancing coal mining technology research, development, and demonstration in fiscal year 1977
By: by staff, Division of Mining Research - Resources.
Series: Information circular - Bureau of Mines ; 8730; Information circular (United States. Bureau of Mines) -- 8730.
Publisher: Dept. of the Interior, Bureau of Mines
Published: 1977
Place of publication: Washington
Language: eng
Number of pages: 13
Subjects: Coal mines and mining -- Research.; Mining engineering.