Anorthosite sample from Two Harbors, Minnesota

This sample of anorthosite was mined by 3M in the corporation’s earliest era. The corporation intended to mine corundum for sandpaper manufacturing, but anorthosite was found instead. This led to a transformation in the corporation’s structure and a transition from mining to manufacturing.

Description

This sample of anorthosite was mined by 3M in the corporation’s earliest era. The corporation intended to mine corundum for sandpaper manufacturing, but anorthosite was found instead. This led to a transformation in the corporation’s structure and a transition from mining to manufacturing.

Holding Location

Minnesota Historical Society

More Information

http://collections.mnhs.org/cms/display?irn=10266610

Articles

3M (Minnesota Mining and Manufacturing Company)

Topics

Business and Industry