Title: Calumet & Hecla - Lake Chemical Company
Photographer: Unknown
Subject Headings: Metal Trade - Copper Industry and Trade - Copper Mines and Mining, Manufacturing Process,
Condition: Good
Description: [A worker operates a piece of machinery that may be an evaporator?]
Source of Description: [Cataloger]
Institution: Michigan Technological University Archives and Copper Country Historical Collections
Donor: Universal Oil Products
Date of Photo: undated
Medium: still image
Color: black and white
Size: 10 cm x 15.5 cm
Polarity: Positive
Image No: MS003-002-001-05
Collection Name: Calumet and Hecla Photograph Collection
Terms of Use: Rights to reproduce and distribute this image may be restricted. Contact the Michigan Technological University Archives and Copper Country Historical Collections for further information.
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MTU Class of:1979
This machine looks like a disk filter. Similar filters are used today to produce a semi-dry cake" from a concentrated ore slurry in the iron mining industry, for example, at the Tilden Mine near Ishpeming, Michigan."
5/27/2011 9:20:15 AM by Anonymous