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| Date: | 06 29 1938 |
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| Description: | A man operates an International PD-80 power unit mounted on a suction dredge for sand and gravel. The power unit is owned by Roy Deringer of Ithaca, Michig... |
| Date: | 09 17 1937 |
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| Description: | A.C. White, contractor, stands near a rotary water well rig powered by an International P-12 power unit mounted on a truck. |
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