Public domain
Transformer manufacture. Flowing at the rate of ninety feet per minute, the flattened copper wire is wrapped with insulating tape by these machines. The workers pictured here stand by ready to change spools. Westinghouse, Sharon, Pennsylvania
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Credit lineTransformer manufacture. Flowing at the rate of ninety feet per minute, the flattened copper wire is wrapped with insulating tape by these machines. The workers pictured here stand by ready to change . 1942-01-01. Palmer, Alfred T., United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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