Employing remarkable team work and persistence Edison spent much of the 1890s designing machinery to mine and process iron ore at his Ogdensburg, New Jersey, ore milling plant, a project that ultimately failed.
Employing remarkable team work and persistence Edison spent much of the 1890s designing machinery to mine and process iron ore at his Ogdensburg, New Jersey, ore milling plant, a project that ultimately failed.
The Thomas Edison Papers
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