Engineering & TechnologyA comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coalRobert L Schmidt![A comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coal]()
A comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coal
Robert L Schmidt
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“A comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coal” by Robert L Schmidt: a public-domain book in “Engineering &…
Catalogue details
- Author
- Robert L Schmidt
- Category
- Engineering & Technology
- Language
- English
- Source
- HathiTrust