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Scientific American

November 1, 1942

1 min read

Tunneling Under Difficulties

Part of the Delaware Aqueduct Was Drilled at Great Depths, Yet Was Finished in Half the Allowed Time

By R. G. Skerrett

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More by R. G. Skerrett

This article was originally published with the title “Tunneling Under Difficulties” in Scientific American Magazine Vol. 167 No. 5 (November 1942), p. 212
doi:10.1038/scientificamerican1142-212

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