Date: | 08 19 1925 |
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Description: | Elevated view looking down at men driving dump trucks and operating a steam shovel and a crane below ground level at a construction site. On the opposite s... |
Date: | 07 25 1927 |
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Description: | Men driving tractors pulling trailers, which are being loaded from a hopper at a granite quarry or mine. On the far right is a steam shovel. |
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