Subject Headings: Metal Trade - Copper Industry and Trade - Copper Mines and Mining, ,
Condition: Good
Description: Lake Superior milling figure 6 shows longitudinal section of the tunnel as completed.
Source of Description: Text of Article
Institution: Michigan Technological University Archives and Copper Country Historical Collections
Donor: Unknown
Date of Photo: June 1921
Medium: still image
Color: black and white
Size: 14.7 cm x 22.6 cm
Polarity: Positive
Image No: No Neg 2010-03-08-03
Collection Name: Copper Country Vertical File
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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