Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
6 results returnedSearch results
- Mining methods of the Rosiclare Lead & Fluospar Mining Co., Rosiclare, Illinois
- Methods and cost of mining fluorspar at Rosiclare, Ill.
- Milling methods and costs at the Hillside Fluorspar mines, Rosiclare, Ill.
- Progress reports :metallurgical division.
- Methods and costs of mining fluorspar from a flat-bedded deposit at Cave-In-Rock, Ill.
- Selective flotation of a fluorspar ore from Illinois