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Scientific American 1912-04-20
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Panama--Impressions of the work on the canal. This six-inch "monitor," throwing a six-inch stream under 150 pounds of pressure, is widening the canal prism by tearing down the mountain side.
Source: Steve Kirch, creator of a wonderful website about SCIENTIFIC AMERICAN in the past
Restoration by: magscanner
- Created on
- Thursday 26 March 2009
- Posted on
- Thursday 26 March 2009
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