Today the city's industrial base still revolves around the several nearby copper mines and copper processing operations. The local mineral resources also include : iron, coal, gold, silver, tin, Iron sulfide, plus more than twenty other rare minerals associated with them such as nickel, cadmium, gallium, molybdenum, germanium and selenium. Other important industries include chemical works, textiles, building materials, electronics, machinery and food processing. Long a hub of water transportation, in 1995 Tongling became the site of Anhui Province's first highway bridge spanning the Yangtze River.