| Title: | Pott-Broche coal-extraction process and plant of Ruhröl G. m. b. H., Bottrop-Welheim, Germany |
| Author: | Lowry, H. H. |
| Author: | Rose, H. J. |
| Author: | United States. Bureau of Mines |
| Note: | U.S. Dept. of the Interior, Bureau of Mines, 1947 |
| 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: | Coal |
| Subject: | Coal mines and mining |
| Subject: | Coal mines and mining -- Germany -- Ruhr (Region) |
| Subject: | Coal -- Germany -- Ruhr (Region) |
| Subject: | Coke |
| Subject: | Coke -- Germany -- Ruhr (Region) |
| Subject: | Germany -- Ruhr (Region) |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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