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Conversion. Copper and brass processing. Pickling lengths of copper water tube in a brass and copper mill. After annealing, or softening by heat to reduce brittleness and allow further drawing, tubes are "pickled" in a sulphuric acid solution to remove oxide and scale that result from the anneal. Bundles of the tubes are picked up by electric cranes and transported from the pickle to a rinse bath of water. The tubes are then returned to the drawbench for re-drawing down to smaller diameters. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Pickling lengths of copper wa...

Public domain photograph - historical image of Ohio, United States, free to use, no copyright restrictions image - Picryl description

That washing machine has to last for a long time, so keep it in good condition. Drain it immediately after use, rinse tub thoroughly, remove agitator or suction cups and rinse with clear water

That washing machine has to last for a long time, so keep it in good c...

Picryl description: Public domain photograph of workers, war production, aircraft, airfield, the 1930s -1940s, free to use, no copyright restrictions.