Public domain
Transformer manufacture. Building cores for power transformers is highly skilled work. A new electric steel called hipersil is used in these cores, a steel which makes it possible to build smaller cores, and therefore use less copper and steel, both virtually needed elsewhere in the war program. In
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Credit lineTransformer manufacture. Building cores for power transformers is highly skilled work. A new electric steel called hipersil is used in these cores, a steel which makes it possible to build smaller cor. 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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