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Popular Science 1947-09
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Created on
Tuesday 1 November 2011
Visits
1277
Tags
civil engineering
,
construction
,
depth
,
tunneling
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General Magazines
/
Science and Technology Magazines
/
Popular Science Monthly
Men digging a tunnel pushing a large chunk of rock onto a conveyor belt to have it hauled away, while up front a man taps the ceiling to check for soundness. "Sandhog's Toughest Job."
Artist:
Source: Horton Family, Noblesville, Indiana
Restoration by: magscanner
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