CARRIE FURNACE, Built in 1907, the furnaces produced iron for the Homestead Works from 1907 to 1978. During the 1920s, 1930s,and 1940s, Carrie 6 and 7 consumed approximately four tons of raw materials comprised of iron ore, coke, and limestone for every ton of iron produced. The cooling system for the blast furnace required over five million gallons of water a day. These furnaces reached their peak production in the 1950s and 1960s.