Mining at Noranda

MR.]. G. TRAILL: My only excuse for contributing to the discussion on Mr. Hall's interesting paper is that I had the good fortune to be employed at Noranda during those romantic years, 1927 and 1928, when construction was at its height.
Keywords: chalcopyrite, gossan, isometric projection, ore, rhyolite, Discussion, Mine, Mines, mining, Noranda, Ore, Ores
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