Topic: Business and Industry / Physical Format: Black-and-white photographs / Location: Saint Louis / Contributor: Minnesota Museum of Mining - Minnesota Digital Library Search Results

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Main open hearth furnace building at Minnesota Steel Company, Duluth, Minnesota

16-inch continuous and 8-, 10- and 12-inch merchant mill at Minnesota Steel Company, Duluth, Minnesota

Blast furnace stoves, gas washer, ore and coke ovens at Minnesota Steel Company, Duluth, Minnesota