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Scientific American 1908-10-03
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Construction of the New York State Barge Canal. One of the powerful hydraulic dredges in operation. Laying the concrete floor of Lock No. 2 at Waterford.
Source: Steve Kirch, creator of a wonderful website about SCIENTIFIC AMERICAN in the past
Restoration by: magscanner
- Created on
- Monday 23 February 2009
- Posted on
- Monday 23 February 2009
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