Duluth News Tribune
Kennecott Exploration Company is expanding its search for copper in the Tamarack area of Aitkin County.
The Minnesota Department of Natural Resources reported Thursday that Kennecott will begin exploration at 12 sites where it has leased exclusive rights to search for copper, nickel and other valuable metals.
According to a statement from the DNR, the company has proposed to complete a ground-based gravity or geophysical survey as opposed to drilling. The DNR describes the gravity survey as “a non-invasive measurement using a sensor of the size of a large coffee pot to passively measure the earth’s gravity field.”