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Tapping floor of a blast furnace

Tapping floor of a blast furnace in the American Smelting & Refining Co.'s plant at Murray, Utah. "The arrangement In the Midvale plant is exactly the same. Slag is pouring out into the forehearth and overflowing into the slag pot in front. The day being quiet, no fumes are escaping. This is, however, not the case at all times. When the wind blows in toward the furnace the tapping floor seen in the left corner may be thick with fumes. The side of the building facing these furnaces is all open." (Source: Hamilton A. Lead poisoning in the smelting and refining of lead. Industrial Accidents and Hygiene Series No. 4. Bulletin of the U.S. Bureau of Labor Statistics 1914a;141:1-97. Public domain.)