Rio Tinto, the world's No. 2 mining company by market value, on Thursday reported a drop in iron-ore production and shipments from its Australian mines. Fourth-quarter and full-year output and exports ...

Kennecott’s mine, smelter and refinery are the largest sources ... Kennecott began in 1903 as the Utah Copper Co., and the first mining in Bingham Canyon was underground, although the vast ...