Building 20 expansion, 1940

ID: 1407 ~ Source: Minnesota Historical Society

This file appears in: Abrasives Products & Manufacturing

Expanded construction of Building 20 in 1940, looking east along Fauquier (now Bush) Avenue.

This file appears in: Abrasives Products & Manufacturing

Abrasives Products & Manufacturing

By Marjorie Pearson, Summit Envirosolutions, Inc.

3M INNOVATIONS IN ABRASIVES PRODUCTS Abrasives: The Sandpaper Story 3M began manufacturing a single product, abrasive sandpaper, in 1905 at a plant in Duluth. Sandpaper was still the only product when…