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Scientific American, Vol. 67, No. 2 (1892) (1892)
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ocks. For a considerable space above and responds with it in level of crest. An 18 foot roadway mates for the construction of the dam will soon be below the water level, 18 inches of broken stone under- before the authorities, and full plans have been pre- runs across it. The dam is of rubble… … © 1892 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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