| Description |
vi, 41 leaves, 4 plates : illustrations, maps ; 29 cm |
| Summary |
"Purpose of the Investigation: The geology of the Jefferson Mine was mapped to determine the relationship of the two fluorspar veins exposed on the 250-foot level to the single vein on the 200-foot level to study the mineralogy and paragensis [sic] of the ore, and to gain any other information that would lead to a better understanding of the fluorspar deposits"--Introduction, leaf 1. |
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