For at least the last five years, Kennecott Utah Copper, a subsidiary of Rio Tinto, violated the federal limits on ore and waste rock production at its Bingham Canyon Mine, the largest open pit copper mine in the world. Kennecott agreed in 1994 to limit production to 150,500,000 tons of ore and waste rock a year at the Bingham Canyon Mine. The EPA approved the limit, and adopted it into federal regulations. Every year since 2006, Rio Tinto violated the production limit, reaching levels up to 192,684,252 in 2009 — more than 40 million tons over the limit, according to data submitted to the Utah Division of Oil, Gas and Mining.
Tell the Utah Division of Air Quality what you think. Sign the petition: Clean Up the Bingham County Mine. Read more: