Anthracite Mechanical Mining Investigations
Subtitle: Progress Report 1 : Preliminary Underground Tests of the Bureau of Mines Scraper-Shaker Loading Machine For Driving Gangways.
Contributors: Buch, J.; Allan, A.
Series: Report of investigations (United States. Bureau of Mines) -- 4500
Publisher: s.n
Published: 1949
Place of publication: S.l
Language: eng
Notes: 1