Public domain
Production. Aircraft. An engineer in the laboratory of a large Western aircraft plant tests a standard Army weld sample. At irregular intervals every welder working on Army contract material must make the "tee" weld shown here. This sample has failed, as part of the break has occurred in the weld ra
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Credit lineProduction. Aircraft. An engineer in the laboratory of a large Western aircraft plant tests a standard Army weld sample. At irregular intervals every welder working on Army contract material must make. 1942-01-01. United States. Office Of War Information, Bransby, David. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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