General & OtherBlasting practices as they affect the roof of coal mines in Ohio, Pennsylvania, and West VirginiaJohn Nicholas Geyer![Blasting practices as they affect the roof of coal mines in Ohio, Pennsylvania, and West Virginia]()
Blasting practices as they affect the roof of coal mines in Ohio, Pennsylvania, and West Virginia
John Nicholas Geyer
Al-Warraq Library does not host book files; it takes you to the copy at the original source. Public-domain status differs from country to country, so check the law where you live before downloading or republishing the book. Do you hold rights in this work? Request its removal
“Blasting practices as they affect the roof of coal mines in Ohio, Pennsylvania, and West Virginia” by John Nicholas Geyer: a public-domain book in “General…
Catalogue details
- Author
- John Nicholas Geyer
- Category
- General & Other
- Language
- English
- Source
- HathiTrust