Douglas. 1 City (1990 pop. 12,822), Cochise co., SE Ariz., at the Mexican border; inc. 1905. The mining and smelting of copper have been important since 1900; the city grew around a copper smelter, now abandoned and largely dismantled. Douglas is also a ranching center and a border station, with plants that make transformers, electronic components, and apparel. Gypsum and tungsten mines and limestone quarries are in the area. The city has an international airport. Its sister city is Agua Prieta, Mex. 2 City (1990 pop. 10,464), seat of Coffee co., S central Ga.; inc. 1895. Its manufactures include yarns, asphalt, aluminum doors, marble and dairy products, and jet engine parts. South Georgia College is in Douglas.