Copyright: 4 Original photography - WesternMiningHistory.com
Description: The old Anaconda Copper Company smelter stack, completed on May 5, 1919, is one of the tallest free-standing brick structures in the world at 585 feet, 1.5 inches. The inside diameter at the bottom is 75 feet and at the top, 60 feet. The stack may be viewed and photographed only from a distance. The site is listed in the National Register of Historic Places.