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| Date: | 10 29 1968 |
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| Description: | Mill drive purchased by Allis Chalmers and used by Duval. Original Falk caption reads, "260 inch x 34 inch single helical split ring gear... part of a phot... |
| Date: | 1910 |
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| Description: | An early Pawling and Harnischfeger cab-operated crane with dial operated controllers and a 5-ton type "O" bridge with a type "A" trolley. The operator is i... |
| Date: | 1939 |
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| Description: | A miner fastening a chain to a mining car in order to be pulled from the shaft by a drum hoist. The drum hoist was powered by an International U-7 power un... |
| Date: | 01 19 1938 |
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| Description: | Two men standing next to mining cars near the opening of the Beam & Merritt mine as an International PA-50 power unit is installed. |
| Date: | 11 18 1937 |
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| Description: | A man operating a Brookville locomotive powered by an International P-12 power unit while two men are working behind him at what appears to be a constructi... |
| Date: | 1910 |
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| Description: | A workman poses beside a belt-driven polisher inside a shed at the Montello granite quarry. Two other men relax in the background near an open door where n... |
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