The Copper Mines of Lake Superior by T. A. Rickard: a review

Rickard examined the mining practices of most of the major mines on the range, with the significant exceptions of the Calumet and Tamarack mines, where non-employee mining engineers were not welcome. For the mines he did examine, he highlighted what they did best, the roots of their technical preferences, and any glaring weaknesses he identified in their processes. He then did the same for the associated mills (including, interestingly, the C&H mill on Torch Lake). There’s a wealth of technical detail, and enough economic detail that one could estimate the entire cost of production for many of the mines.

Read Full Post »