Engineering & TechnologyLongwall mining with a German coal planer : Pocahontas No. 3 coalbed, Keystone, W. VaD. S Harper![Longwall mining with a German coal planer : Pocahontas No. 3 coalbed, Keystone, W. Va]()
Longwall mining with a German coal planer : Pocahontas No. 3 coalbed, Keystone, W. Va
D. S Harper
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“Longwall mining with a German coal planer : Pocahontas No. 3 coalbed, Keystone, W. Va” by D. S Harper: a public-domain book in “Engineering & Technology”…
Catalogue details
- Author
- D. S Harper
- Category
- Engineering & Technology
- Language
- English
- Source
- HathiTrust