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Courtesy of UC Riverside, California Museum of Photography
http://www.oac.cdlib.org/ark:/13030/kt6v19p84v/?order=1

Title:

Bullion mold conveyor - each bullion bar weigh 97 lb.. & this machine will turn out about 450 bars per hour. In a lead smelting plant. Leadville, Colo.

Creator/Contributor:

Not Known
Gifford M. Mast

Date:

1929

Contributing Institution:

UC Riverside, California Museum of Photography