The Erie Canal was built decades before the invention of dynamite to efficiently blast through stubborn rock, or steam-powered earth-movers and excavators to clear mud, rock and rubble. Instead, the thickly forested land was cleared and the 40-foot wide canal was dug and the locks were constructed by the raw manpower of an estimated 50,000 laborers, including a large contingent of recently arrived Irish immigrants and it was the first major infrastructure project in the history of America. An amateur crew of self-taught local engineers that included a few inexperienced surveyors and at least one local math teacher. Whic ground breaking technology that is not built in reference to historical technologies ?
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