File:Operating a vacuum heat treating furnace, by the Watertown Arsenal, United States Army, c. 1959–1962, from the Digital Commonwealth - commonwealth 2n49vs61t.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:45, 23 February 2022 | 5,242 × 4,041 (1.54 MB) | Daderot | Uploaded a work by Watertown Arsenal, United States Army from Digital Commonwealth with UploadWizard |
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