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batches, conversion

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Conversion. Watch cases to war production. Compacts out, war production in. One of the last batches of luxury items is put through a Kentucky watch case plant now engaged in the production of gun parts, fuse baffles, compass cases and other essentials for our fighters. Wadsworth Watch Company, Louisville, Kentucky

Conversion. Watch cases to war production. Compacts out, war productio...

Public domain photograph - working class people, the 1930s United States, work, labor, worker, free to use, no copyright restrictions image - Picryl description

Conversion. Rendering of household fats. Reclaimed household greases from America's kitchens drain into an open vat at a rendering plant. Some of the batches are recooked with additional fats to bring them up to certain specific grades

Conversion. Rendering of household fats. Reclaimed household greases f...

Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description