| Title: | Diamond-drilling blast holes, Bellefonte Mine, National Gypsum Co., Centre County, Pa. |
| Author: | Mosier, McHenry |
| Author: | United States. Bureau of Mines |
| Note: | U.S. Dept. of the Interior, Bureau of Mines, 1948 |
| Link: | page images at HathiTrust |
| No stable link: | This is an uncurated book entry from our extended bookshelves, readable online now but without a stable link here. You should not bookmark this page, but you can request that we add this book to our curated collection, which has stable links. |
| Subject: | Blasting |
| Subject: | Boring machinery |
| Subject: | Diamond bits |
| Subject: | Mines and mineral resources -- Pennsylvania -- Centre -- Equipment and supplies |
| Subject: | Rock-drills |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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