PIMA COUNTY, Ariz. (KGUN) — The University of Arizona’s San Xavier Mining Laboratory near Sahuarita is a hands-on learning space for students and a place where people in the industry can ...

ARIZONA NEWS Arizona groups launch campaign to protect Grand Canyon from mining Jun 19, 2018, 4:55 AM | Updated: Jun 21, 2018, 1:53 pm BY ALI VETNAR KTAR.com ...