city, Sverdlovsk oblast (province), western Russia, in the mid-Urals on the Revda River, at the confluence of the Chusovaya River. Founded in 1734, when a metallurgical factory was built, it became a city in 1935. In 1940 the Sredneuralsk copper-smelting plant began operation based on ore from the copper-mining centre of Degtyarsk. Ferrous metallurgy and fertilizers are also important. Pop. (1991 est.) 66,000.