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Mining methods of the Rosiclare Lead & Fluospar Mining Co., Rosiclare, Illinois

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


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