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G.T. Hemmeter, chief of the mechanical engineering section of the engineering and development division, sets one of the automatic recording thermometers used on tunnel dryer which he designed for dehydrating vegetables. Regional agricultural research laboratory, Albany, California
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Credit lineG.T. Hemmeter, chief of the mechanical engineering section of the engineering and development division, sets one of the automatic recording thermometers used on tunnel dryer which he designed for dehy. 1942-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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