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Floating tower derrick erects arch spans over Susquehanna River
Description derrick, with overall vertical reach exceeding 200 ft, for erection of steel trusses and lateral bracing of two 456-ft arch spans crossing Susquehanna River, at Havre de Grace, Md.
Floating tower derrick erects arch spans over Susquehanna River
Description derrick, with overall vertical reach exceeding 200 ft, for erection of steel trusses and lateral bracing of two 456-ft arch spans crossing Susquehanna River, at Havre de Grace, Md.
Floating tower derrick erects arch spans over Susquehanna River
Construction Methods
1940
Article (Journal)
English
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