Engineering & TechnologyExperimental longwall mining in a Pennsylvania anthracite mine (In two parts). 1, Use of yielding steel propsRobert J Brennan![Experimental longwall mining in a Pennsylvania anthracite mine (In two parts). 1, Use of yielding steel props]()
Experimental longwall mining in a Pennsylvania anthracite mine (In two parts). 1, Use of yielding steel props
Robert J Brennan
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“Experimental longwall mining in a Pennsylvania anthracite mine (In two parts). 1, Use of yielding steel props” by Robert J Brennan: a public-domain book in…
Catalogue details
- Author
- Robert J Brennan
- Category
- Engineering & Technology
- Language
- English
- Source
- HathiTrust