Open-Hearth Furnace

Caption: Open-Hearth Furnace.

"Molten blast furnace at U. S. Steel's Homestead District Works, Munhall, Pennsylvania. About 9 of every 10 tons of steel made in America come from Open-Hearth Furnaces."

Notes: Postcard. Reverse: Published by Imperial Greeting Card Co., Pittsburgh, Pa. Plastichrome by Colourpicture Publishers, Inc., Boston 15, Mass., U. S. A. P3008.

Postcard courtesy Barry Chad.

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