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Minnehaha Bypass Tunnel
"Showing Tower & air hoist used to lift conc. boxes to top of forms." ca. 1923
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Uploaded on October 29, 2016
Minnehaha Bypass Tunnel
"Showing Tower & air hoist used to lift conc. boxes to top of forms." ca. 1923
849
views
0
faves
0
comments
Uploaded on October 29, 2016