Complex sentence: Cumulatively, Bingham Canyon has produced more copper than any other mine in the USA and is the second in the world after Chuquicamata in Chile, although mines in Chile, Indonesia, Arizona, and New Mexico now exceed Bingham Canyon's annual production rate.
Split into simpler sentences: Cumulatively, Bingham Canyon has produced more copper than any other mine in the USA, and is the second in the world after Chuquicamata in Chile. Mines in Chile, Indonesia, Arizona, and New Mexico now exceed Bingham Canyon's annual production rate.