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Mining Iron In 1800S
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Mining Iron In 1800S

Mining Iron In 1800S

Dec 18 2018 The Pittsburgh and Boston Mining Company begins mining near Copper Harbor The operation is abandoned in 1845 after a 28000 investment but only 2968 returned By 1846 iron wire replaces copper due to its greater tensile strength and lower maintenance costs The town of Clifton and Cliff Mine in Keweenaw County in the late 1800s

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