Mining Project

Asarco Mission Complex Tailings #1, #2, & # 3

OWNER
Asarco, LLC
LOCATION:
Sahuarita
YEAR COMPLETED
July, 2010

This project includes the reclamation of three tailing impoundments located on the property of the San Xavier District Tohono O’odham Nation. The slopes of the tailing impoundments were regraded to a 3:1 and then capped with alluvial material. The top surface, approximately 1,135 acres, was also capped with alluvial material. Major elements included 2,400,000 cubic yards of alluvial capping, 2,350,000 cubic yards of earthwork associated with slope regrading, and 32,000 feet of stormwater drainage channels.