Public domain
Conversion. Beverage containers to aviation oxygen cylinders. After shatterproof oxygen cylinders for high altitude flying have passed all tests in the metal division of a large Eastern rubber factory, hot air is blown through the cylinders to remove all trace of moisture (left). The cylinders are t
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Credit lineConversion. Beverage containers to aviation oxygen cylinders. After shatterproof oxygen cylinders for high altitude flying have passed all tests in the metal division of a large Eastern rubber factory. 1942-01-01. United States. Office Of War Information, Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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