History and features of one thousand miles of canals to foster commerce within state are reviewed; review includes unusual construction of first major tunnel in United States, and one of earliest railroads, and 37-mi portage railroad which lifted and lowered canal boats across backbone of Alleghenys, total height of 2546 ft on 10 inclined planes using cables powered by stationary steam engines.
Amazing Pennsylvania canals
Civ Eng (NY)
Civil Engineering (New York) ; 35 , n 1
1965
4 pages
Aufsatz (Zeitschrift)
Englisch
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