Title: Calumet & Hecla - Lake Chemical Company
Photographer: Unknown
Subject Headings: Manufacturing Process, Metal Trade - Copper Industry and Trade, Manpower - Labor
Condition: Good
Description: Lake Chemical Company - Calumet, Michigan. A worker fills a poisonous 50 lb. bag labled T-B-C-S 53, a commercial grade of Tribasic Copper Sulfate representing a physical and chemical combination of basic copper and copper sulfate, insoluble in water. Its metal content is more than twice the percentage available in commercial copper sulfate (blue vitriol, blue stone.) [A skull and cross bones is shown next to the poison warning]
Source of Description: Label on bag [Cataloger]
Institution: Michigan Technological University Archives and Copper Country Historical Collections
Donor: Universal Oil Products
Date of Photo: October 4 1950
Medium: still image
Color: black and white
Size: 19.7 cm x 25.1 cm
Polarity: Positive
Image No: MS003-003-009-17
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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