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You searched for: Topic Business and Industry Remove constraint Topic: Business and Industry Physical Format Black-and-white photographs Remove constraint Physical Format: Black-and-white photographs Location Saint Louis Remove constraint Location: Saint Louis Location City of Duluth Remove constraint Location: City of Duluth

Minnesota Digital Library

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

2. 16-inch continuous and 8-, 10- and 12-inch merchant mill at Minnesota Steel Company, Duluth, Minnesota

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

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