Telephone: 520-648-2500   Fax: 520-625-0802
Address:    4201 West Pima Mine Road, Sahuarita, AZ 85629

R.R. Connections: Union Pacific Railroad (UPRR)

Location: 18 miles south of Tucson, Arizona in Pima County, Arizona.

Operations: The Mission Complex, an open-pit mine composed of the Mission, Eisenhower, Pima, Mineral Hill and South San Xavier properties and the nearby North San Xavier mine. The current pit, 2.5 miles long by 1.5 mile wide and 1,200 feet deep, is situated on 20,000 acres. Benches are 40 feet high.

December 31, 2012 Employment:
620 employees; 503 hourly / 117 salaried.


Tom Phillips, General Manager
Robert Burrill, North Mill Manager
Tom Klempel, Environmental Manager
Brian O’Neal, Safety Manager
David Patrick, South Mill Manager
Bjorn Meyer, Mine Manager
Michael Moran , Human Resources Manager
Ted Moulin, Engineering Manager

Production Statistics:

Copper in Concentrate:
134.3 million lbs. (2012)

Economic Impacts:

Wages, salaries and fringe benefits: $58.4 million
Property, severance and sales taxes: $13.2 million
Total materials and other spending (energy, fuel and supplies): $156.7 million
Royalties (State): $6.6 million
Royalties (Tribe): $2.5 million


1959 - Pre-mine development
1961 - Mill began operating at 15,000 tons per day.
1967 - Two additional rod mills and one flotation section added tobring capacity to 22,000 tons per day.
1976 - Partnership formed with Anamax Mining Company to mine the Eisenhower property between Mission pit and South San Xavier Pit.
1979 - Production commenced from Eisenhower.
1980 - Flotation cells upgraded
1985 - Pima mine, contiguous to Mission, acquired.
1987 - Refinements increased mill capacity to 28,000 tons per dayEisenhower acquired by Asarco from Anamax.
1989 - Pima Mill acquired
1991 - Refurbishing and new construction of (Pima Mill) Mission SouthMill.
1993 - Expansion of Mission Mine completed Flotation CellModification.
1995 - Secondary crusher modifications and DCS installed in MissionMill. Increases capacity to 43,000 (Total 63,000 with 20,000 from South Mill).
1996 - Underground mine expansion.
1997 - Underground mine expansion; Overland conveyor installed to movenon-mineral rock.
1999 - Mission Mill Secondary Crusher Upgraded.
2000 - Mission Mill throughput reduced to 41,000 tons per day.
2001 - Mission Mill throughput reduced to 31,000 tons per day, SouthMill placed under care and maintenance.
2002 - Mission Mill throughput reduced to 24,000 tons per day.
2003 - Mission Mill throughput reduced to 17,000 tons per day. Underground mine closed.
2006 - Restart of Molybdenum Circuit.
2009 - Pumping system installed to utilize CAP water.
2011 - Reclamation of Tailings Dams 1-3 and the Mission North Dump
2011 - Mine utilizes biosolids from Pima County Green Valley Wastwater treatment plant.
2013 - South Mill Expansion Completed
2033 - Reserve life of Mission Mine