Date: | |
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Description: | Plate Steel Spiral Casing for 70,000 horse-power Niagara Falls hydraulic turbine unit at the Allis-Chalmers Manufacturing Company erecting shop. The castin... |
Date: | 1954 |
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Description: | Workers at the A.O. Smith Corporation in Milwaukee assembling frames for Cadillac automobiles. In 1902 Arthur O. Smith, son of the company's founder, produ... |
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