SALT LAKE CITY -- Utah regulators are issuing a permit for increased emissions from the proposed expansion of the world's largest open pit copper mine.
Kennecott Utah Copper officials say the increased emissions will come primarily from dust created by a project that will extend the life of the mine in Salt Lake County by almost a decade.
Division of Air Quality director Bryce Bird says the permit includes tighter restrictions on dust controls and places a stricter cap on other pollutants.
The permit is the first of 25 permits the mine needs to begin the expansion, although Kennecott officials have said this permit sets the stage for the other permits.
Utah Moms for Clean Air co-founder Cherise Udell says her group opposes the permit and will continue to fight the mine's expansion.