Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania
Eric R Bauer
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“Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania” by Eric R Bauer: a public-domain…
Catalogue details
- Author
- Eric R Bauer
- Category
- Engineering & Technology
- Language
- English
- Source
- HathiTrust