The Duluth Complex
The Duluth complex
The copper, nickel and platinum group elements in the Duluth complex have been studied since 1948. The price of copper has gone from under $1,000 per ton to above $8,000 per tone, in that time. The statistics that were used by Rolf Westgard are, if anything, too conservative. They are proven facts about the chemistry, physics and economics of mining. The minerals have not changed but the economics have changed. Minnesota is very fortunate to have had the foresight to wait until the technology has been proven and the price increased to its present level. Stewardship costs money and the use of these metals is a part of worldwide stewardship. Minnesota can afford to use its current assets and protect its environment at the same time.
FRANCIS CUMMINGS is a graduate of North Dakota College of Engineering and Mines.