Vince Guerrieri, Popular Mechanics; Why the Hulett Unloader Is One of History's Greatest Forgotten Machines
"Hulett, a 2006 inductee into the National Inventors Hall of Fame,
received more than two dozen patents for various machines in his career.
But his most important was Patent No. 652,313A in 1899, for a
92-foot-tall unloading apparatus that could scoop iron ore from a ship’s
hold 10 tons at a time—an almost unfathomable number back then, even
though more than 13 million tons of ore were shipped on the Great Lakes
that year."
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