"Pollution Fears Cloud Approval of Kennecott Expansion"
"Expanding Kennecott’s open-pit mine wouldn’t create enough air pollution to stop the copper giant from burrowing deeper into the Oquirrh Mountains. So ruled the Utah Air Quality Board in giving Kennecott Utah Copper a critical go-ahead Wednesday to enlarge its mine on the western edge of Salt Lake County — despite objections from anti-pollution advocates and a warning from the U.S. Environmental Protection Agency that the expansion may not be approved."