Minnesota
Exploration for Metallic Mineral Resources in Minnesota Copper, Nickel, and Platinum Group Metals The DULUTH COMPLEX Hosting World Class Copper, Nickel, and Platinum Group Metal Resources Exploring since 1948 There are many deposits of copper, nickel, and Platinum Group Metal (PGM) resources in the bedrock along approximately 40 miles of the edge of the Duluth Complex near Babbitt, Minnesota ...