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Small Mine Advance Assay Furnace, Mine & Smelter Supply Co. [201711]

Currency:USD Category:Collectibles / Mining Start Price:250.00 USD Estimated At:500.00 - 1,200.00 USD
Small Mine Advance Assay Furnace, Mine & Smelter Supply Co. [201711]
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900.00USDby S******n+ applicable fees & taxes.
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Small Calkins Advanced Combination Mining & Melting assay furnace No. 3 by Mine & Smelter Supply Co., Denver, Salt Lake, El Paso. The top was made Calkins Co., Los Angeles. Comes with the front closure and protective device as well as several cupels. Dual furnace entry. Top section for cupels accessible from the front. Bottom section for crucibles. Would hold a single 5 assay ton crucible. Both bone ash closures present, usually missing. Would have been used during Tonopah Goldfield Rush in Nevada. 20" H x 13" W x 13.5" D. Very attractive small assay furnace. Found in Mine Smelter Supply Catalog, 1912. Considered Calkins Advanced Combination Mining & Melting Furnace 3. Same design as furnaces 5 and 10, intended for the use of prospector and examining engineers (pg. 229).
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Date: c.1912
Country (if not USA):
State: Colorado
City: Denver
Provenance: