Framed or unframed, desk size to sofa size, printed by us in Arizona and Alabama since 2007. Explore now.
Shorpy is funded by you. Patreon contributors get an ad-free experience.
Learn more.
August 1941. "Iron ore from the Minnesota Range in the Great Northern railyards at Superior, Wisconsin." Medium format acetate negative by John Vachon. View full size.
Minnesota Mining and Manufacturing, more widely known as 3M, began with a small mine in northern Minnesota. It went from gravel and aggregates to sandpaper and now makes a wide variety of products for a wide variety of industries.
My father worked the mines on the Cuyuna Range near Crosby, Minnesota, and in 1941, tons of "usable ore" were shipped from Cuyuna. Maybe this ore is Cuyuna Range ore.
On Shorpy:
Today’s Top 5