I read the letter to the editor published in the February 24, 2023, edition of The Lake County Press concerning the Duluth Complex and the copper-nickel deposits located within the complex. Several years ago I attended 2 days of meetings of The Institute of Lake Superior Geology. It is mainly for professional geologists who have interests in the Lake Superior Region. I attended the meetings this year in Eau Claire, Wisconsin. Amateurs, such as myself, also attended the meetings. I had the chance to talk with the Minnesota State Geologist and the Minnesota State Geologist Emeritus concerning the copper-nickel deposits located south the Missabe Iron Range several years ago. They both said that the area from just east of State Highway 1 where it meets the Kawishiwi River/Birch Lake and going west to about Virginia had the second largest reserve of copper ores in the world. We also have the third largest reserve of nickel ores. I asked someone from the State Geologist’s Office at the meetings this year. He confirmed their statements. The largest such districts are in South Africa.