| Archive Reference / Library Class No. | LS/622.34 Oversize |
| Title | Secondary enrichment by natural flotation. |
| Date | 1962 |
| Publication Date | 1962 |
| Author | Varvill, W. W. |
| Repository | Derbyshire Record Office |
| Abstract | Flotation is considered as the probable reason for the secondary enrichment of the galena deposits in the Mill Close and other lead mines in Derbyshire. |
| Further Information | From: Mine and Quarry Engineering Feb, Mar, Apr and May 1962 |
| Term | Lead mines |
| Lead mining |
| Geology |
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