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Mission Mine

Producer in Pima county in Arizona, United States with commodities Copper, Molybdenum, Silver, Zinc, Lead, Gold, PGE, Tin, Tungsten, Fluorine-Fluorite, Cadmium
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Mineral rights holdings
  18. Land status
  19. Ownership information
  20. Production statistics
  21. Reserves and resources
  22. Workings at the site
  23. Links to other databases
  24. Bibliographic references
  25. General comments
  26. Reporter information

Geologic information

Identification information

Deposit ID 10111429
MRDS ID M050387
Record type Deposit
Current site name Mission Mine
Alternate or previous names Mission Porphyry Copper Deposit, East Pima, Palo Verde, Mission - San Xavier - Eisenhower, Mission Extension, San Xavier, East Pima Mine, Eisenhower Mine
Related records 10113915

Comments on the site identification

  • ******For additional Resource and Production: SEE; Mission Complex (plant)- Deposit ID 10113915

Geographic coordinates

Geographic coordinates: -111.0643, 31.99234 (WGS84)
Elevation 983
Relative position 17 MI SOUTH OF TUCSON.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Twin Buttes(quadrangle 1:24,000 scale)

Sells(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Santa Cruz(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

ST(Federal land areas administered by ST)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 016S;016S 012E;013E 36;31 CENTER OF E (36); CENTER OF W (31) Arizona

Comments on the location information

  • Location Given Is For Mine Symbol Shown On Topo Map Between Two Parts Of Mission Pit, Near Section Line.

Commodities

Commodity Importance
Copper Primary
Molybdenum Primary
Silver Primary
Zinc Critical Secondary
Lead Secondary
Gold Secondary
PGE Critical Secondary
Tin Critical Tertiary
Tungsten Critical Tertiary
Fluorine-Fluorite Critical Tertiary
Cadmium Tertiary

Comments on the commodity information

  • 40 Ft Thick Zone Of Supergene Enrichment Clays, Malachite, Native Cu; Oxidation To About 200 Ft Along Some Faults, Calcite Zone 20 Ft Thick; Late Fluorite In Calcite-Scheelite-Galena-Pyrite. Pgm Recovered As Byproduct From Smelter.

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Chalcopyrite Ore
Copper Ore
Cubanite Ore
Galena Ore
Hematite Ore
Magnetite Ore
Molybdenite Ore
Pyrite Ore
Scheelite Ore
Sphalerite Ore
Chrysocolla Ore
Tennantite Ore
Clay Gangue
Chlorite Gangue
Diopside Gangue
Garnet Gangue

Alteration

  • (Local) Tactite, Hornfels, Leaching And Enrichment Confined To A Thin Layer
  • (Local) Kaoliniztaion, Silicification, Pyritization & Marlization

Mineral occurrence model information

Model code 58
USGS model code 18a
Deposit model name Porphyry Cu, skarn-related
Mark3 model number 9

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Metamorphic Rock > Skarn (Tactite)
    Rock unit name Sherrer Formation ;
    Rock description Sherrer Formation ;
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Economic information

Geologic structures

Type of structure Local
Structure name Thrust And Normal Faults, NW Trending Anticline
Structure description Thrust And Normal Faults, Nw Trending Anticline
Type of structure Local
Structure name Step Faulting, and Brecciation

Ore body information

  • Dip FLAT LYING
    Thickness 152.4M
    Length 1609.3M
    Width 804.65M
    Depth to top 60.96M
    Depth to bottom 213.36M
  • General form Irregular, Lenses, Veinlets
    Strike N20E
    Dip 35
    Thickness 14.02M
    Depth to top 198.12M
    Depth to bottom 381M
  • Thickness 137M
    Area 100HA
    Depth to top 229M

Comments on the ore body information

  • Concentration Process: 30-70 Ft Thick Oxidation & Secondary Enrichment Zone. Chrysocolla, Chalcocite, Some Malachite & Fe Oxides
  • Type of Orebody #1 : REPLACEMENT
    Shape of Orebody #1 : MASSIVE
    Type of Orebody #2 : DISSEMINATED
    Primary mode of Origin : CONT METASOMATIC
    Primary Ore Control : FAULTING
    Secondary Ore Control : FOLDING
    Degree of Wallrock Alter. : UNKNOWN
    Type of Wallrock Alter. #1 : SERICITIC
    Type of Wallrock Alter. #2 : CARBONATE SILIC
    Type of Wallrock Alter. #3 : ADV ARGILLIC
    Total Surface Area (HA) : 100

Controls for ore emplacement

  • Tactite And Hornfelsed Sedimentary Units, Particularly Limy Units, Less In Argillite; Contact Of Papago Formation With Underlying Paleozoic Sedimentary Rocks; Low Angle Thrust Faults
  • Disseminated in Intrusive

Comments on the geologic information

  • The Quartz Monzonite Intrusion At Twin Buttes Is Small In Proportion To The Size Of The Mineralized Zone, And The Amount Of Ore In Hydrothermally Altered Sediments Is Large In Proportion To That In Porphyry.
  • Ore Body Is Contiguous With Mission And Pima Deposits

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Both
Deposit size Large
Significant Yes
Discovery year 1953
Discoverer Asarco
Mining method Open Pit
Year of first production 1961
Milling method Flotation

Mining district

District name Pima District
District name Twin Buttes

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights State Lease

Land status

Ownership category Private
Ownership category BLM Administrative Area

Ownership information

  • Type Lessee/Operator
    Owner Sterlite Group
    Interest 100
    Year 2009
  • Type Owner-Operator
    Owner Asarco (American Smelting And Refining Co.)
    First year 1989

Production statistics

  • Year 1962
    Period 1961-1962
    Material Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 2wt-pct
  • Year 1963
    Period 1960-1963
    Material Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 5wt-pct
    Secondary Zn Zinc Zinc 1wt-pct
    Primary Ag Silver Silver 28g/mt
  • Year 1969
    Material CU
    Accuracy Estimate
    Description Ap_Grade: ^0.68% Cu, 0.24% Mo
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Molybdenum Molybdenum 0wt-pct
    Copper Copper 1wt-pct
  • Year 1970
    Material CU
    Accuracy Estimate
    Description Ap_Grade: ^0.68% Cu, 0.24% Mo
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Molybdenum Molybdenum 0wt-pct
    Copper Copper 1wt-pct
  • Year 1971
    Material CU
    Accuracy Estimate
    Description Ap_Grade: ^0.68% Cu, 0.24% Mo
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Molybdenum Molybdenum 0wt-pct
    Copper Copper 1wt-pct
  • Year 1972
    Material CU
    Accuracy Estimate
    Description Ap_Grade: ^0.68% Cu, 0.24% Mo
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Molybdenum Molybdenum 0wt-pct
    Copper Copper 1wt-pct
  • Year 1973
    Material CU
    Accuracy Estimate
    Description Ap_Grade: ^0.68% Cu, 0.24% Mo
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Molybdenum Molybdenum 0wt-pct
    Copper Copper 1wt-pct
  • Year 1979
    Material Cu-Ag-Mo Ore 3617000 Mtpy Ore
  • Year 1980
    Material Cu-Ag-Mo Ore 2716000 Mtpy Ore
  • Year 1981
    Material Ore
    Ore mined 4588000mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Mo Molybdenum Molybdenum 252mt
    Primary Cu Copper Copper 29174mt
  • Year 1982
    Material Ore
    Ore mined 4248000mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Mo Molybdenum Molybdenum 324mt
    Primary Cu Copper Copper 24691mt
  • Year 1983
    Material Ore
    Ore mined 2836000mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Mo Molybdenum Molybdenum 148mt
    Primary Cu Copper Copper 15831mt
  • Year 1991
    Material Asarco 1993 10-K p A14, 15, 18\nhttp://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000007649&owner=exclude&count=40
    Ore mined 12924000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Ag Silver Silver 42487355.04g
    Primary Cu Copper Copper 80300mt
  • Year 1992
    Material Asarco 1993 10-K p A14, 15, 18.\nhttp://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000007649&owner=exclude&count=40
    Ore mined 18016000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Ag Silver Silver 51660000g
    Primary Cu Copper Copper 93620mt
  • Year 1993
    Material Asarco 1993 10-K p A14, 15, 18. http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000007649&owner=exclude&count=40
    Ore mined 19531000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Silver Silver 58130000g
    Primary Cu Copper Copper 107000mt
  • Year 1994
    Material Asarco 1995 10-K, p. A17, 18, 21. http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000007649&owner=exclude&count=40
    Ore mined 21134000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Ag Silver Silver 73250000g
    Primary Cu Copper Copper 104100mt
  • Year 1995
    Material Asarco 1995 10-K, p. A17, 18, 20, 21. http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000007649&owner=exclude&count=40
    Ore mined 20093000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Ag Silver Silver 80990000g
    Primary Mo Molybdenum Molybdenum 410mt
    Primary Cu Copper Copper 101900mt
  • Year 1996
    Material Asarco 1998 10-K, p. A14, 15, 17, 18. http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000007649&owner=exclude&count=40
    Ore mined 20691000mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Ag Silver Silver 61620000g
    Primary Mo Molybdenum Molybdenum 384mt
    Primary Cu Copper Copper 98070mt
  • Year 1996
    Period 1957-1996
    Material Ore
    Ore mined 556365000mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Ag Silver Silver 1136mt
    Primary Mo Molybdenum Molybdenum 15450mt
    Primary Cu Copper Copper 3358000mt
  • Year 1997
    Material Asarco 1998 10-K, p. A14, 15, 18. http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000007649&owner=exclude&count=40
    Ore mined 20106000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Ag Silver Silver 67460000g
    Primary Cu Copper Copper 114400mt
  • Year 1998
    Material Asarco 1998 10-K, p. A14, 15, 18. http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000007649&owner=exclude&count=40
    Ore mined 20046000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Ag Silver Silver 79340000g
    Primary Cu Copper Copper 115700mt
  • Year 2009
    Material Grupo Mexico 2009 AR p. 26.\nhttp://www.gmexico.com/press/publications.php
    Ore mined 899000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu content Copper Copper 4800mt

Comments on the production information

  • 1961-1972 Produced Over 77.6 Million Tons Of Ore Averaging 0.7% Cu , 0.13 Oz/T Ag, Considerable Zn, Mo, & Pb, Trace Au. Average Mos2 Content 0.02%; Capacity-1,000 Tons Per Year Of Mos2 (Asarco: The Metal Maker). The Amounts For The Items Given On This Record Differ In Decimal Points From Those Given In Record D000815 (J.E. Elliott). As Of Sept. 30, 1992, No References Were Available To Check These Figures.
  • Annual production 475,000 tons Cu concentrates (28% Cu), recovering 130,000 tons Cu metal and 2 million ounces of silver. (Vugteveen CHM 110 Course)

Reserves and resources

  • Type In-situ
    Estimate year 2009
    Reserves 184500000mt
    Remarks Grupo Mexico 2009 AR p26. 860,000 mt contained Cu.\nhttp://www.gmexico.com/press/publications.php
    Commodity Subtype Grade units Group Importance Year
    Copper 0.47 wt-pct Copper Primary 2009
  • Type In-situ
    Estimate year 1996
    Reserves 485319000mt ore
  • Type In-situ
    Estimate year 1995
    Reserves 161000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.53 wt-pct Copper Primary 1995
  • Type In-situ
    Estimate year 1992
    Reserves 575000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.67 wt-pct Copper Primary 1992
    Silver Ag 4.8 g/mt Silver Primary 1992
  • Type In-situ
    Estimate year 1989
    Reserves 302000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.67 wt-pct Copper Primary 1989
    Silver Ag 4.5 g/mt Silver Primary 1989
  • Type In-situ
    Estimate year 2008
    Total endowment 900000000mt ore
    Remarks Singer 2008 in PorCuEX2008.xls.
    Commodity Subtype Grade units Group Importance Year
    Molybdenum 0.015 wt-pct Molybdenum Primary 2008
    Copper 0.52 wt-pct Copper Primary 2008

Comments on the reserve resource information

  • 1978 Estimate Excludes Contribution Of 31.5 Million Tons To Eisenhower Mining Co. In Sept. 1985 Asarco Acquired The Adjacent Pima Property With 39 Million Tons Of Ore. It Obtained Another 14 Million Tons Of Reserves In April 1987 When It Bought The Eisenhower Operation. In Late 1987 It Acquired An Additional 14 Million Tons Of Reserves With The Undeveloped Mineral Hill Property. These Purchased Boosted Mission'S Reserves By 56%. Purchase Of The Helvetica Property, 15 Miles East Of The Mission Complex, Added 280 Million Tons Of Sulfide Ore Grading 0.6% Copper And 23 Million Tons At 0.8%.

Workings at the site

  • Type of workings Surface
    Overall depth 301.75M
    Overall length 2225.04M
    Overall width 2194.56M
  • Type of workings Surface
    Length 487.68M
    Overall depth 335.28M

Comments on the workings information

  • Large Open Pit; The Above Figures Represent The Merged Product Of The Mission, Pima, And Eisenhower Mines Into A Single, Large Open Pit.
  • Production Levels At 700, 800, 900 Ft

Comments on development

  • Discovery By Scout Drilling; Initial Production Rate 15-20,000 Tons Cu Ore/Day After Investment Of $34 Million; Expan$: 13.1 Million. ; Econ.Com: In February Of 1989, Asarco Approved Spending Of $94 Million To Increase Capacity At Mission And To Refurbish The Adjacent Pima Mill And Concentrator That It Bought For Approximately $6 Million. ; Mill.Cap : 41,000 St/D

Reference information

Bibliographic references

  • Deposit

    Gale, R.E., 1965, The Geology Of The Mission Copper Mine, Pima Mining District, Arizona: Stanford, Calif., Stanford University, Ph.D Thesis, 176 P.

  • Reserve-Resource

    Greeley, 1978; Walenga, 1989, P. 5a and 6a; Niemuth, 1987.

  • Other Database

    Cimri

  • Orebody

    Jansen L J 1982 - Stratigraphy and structure of the Mission Copper deposit, Pima mining district, Pima County, Arizona: in Titley S R 1983 Advances in Geology of the Porphyry Copper Deposits, Southwestern North America University of Arizona Press, Tucson pp 467-474

  • Production

    Acarco Mining operations in Arizona. Mission Mine, Tuscon. Accessed 06-AUG-2009. http://www.elmhurst.edu/~chm/vchembool/330copper.html

  • Geology

    Porter T M 1998 - The Mission skarn porphyry copper deposit: in Compilation from published literature and previous visits (Unpub.) 9p

  • Deposit

    Cooper, J.R., 1960, Some Geologic Features Of The Pima Mining District, Pima County, Arizona: U.S. Geological Survey Bulletin 1112-C, P. 63-103.

  • Production

    Keith, 1974, Greeley, 1978; Asarco, 1969

  • Geology

    Titley S R 1982 - Some features of tectonic history and ore genesis in the Pima mining district, Pima County, Arizona: in Titley S R 1983 Advances in Geology of the Porphyry Copper Deposits, Southwestern North America University of Arizona Press, Tucson pp 387-406

  • Reserve-Resource

    USBM Minerals Yearbook 1957-89; Asarco 1961-71 Annual Reports and 1972-96 SEC Form 10K; PCIA 1975-94

  • Orebody

    King J R 1982 - Geology of the San Xavier North Porphyry Copper deposit, Pima mining district, Pima County, Arizona: in Titley S R 1983 Advances in Geology of the Porphyry Copper Deposits, Southwestern North America University of Arizona Press, Tucson pp 475-485

  • Deposit

    Richard, Kenyon, And Courtright, J.H., 1959, Some Geologic Features Of The Mission Copper Deposit, In Heindl, L.A., Ed., Arizona Geological Society, Southern Arizona Guidebook Ii, P. 201-204.

  • Geology

    Titley S R, 1996 - Alteration of mineralized carbonate rocks in the epicrustal environment: in Porphyry Related Copper and Gold Deposits of the Asia Pacific Region, Conf Proc, Cairns, 12-13 Aug, 1996, AMF, Adelaide, pp 3.1 - 3.10

  • Reserve-Resource

    Asarco 1996 SEC Form 10K

  • Production

    Long, K.R., 1995, Production and reserves of Cordilleran (Alaska to Chile) porphyry copper deposits; in Pierce, F.W. and Bolm, J.G., eds., Porphyry Copper Deposits of the American Cordillera, Arizona Geological Society, Digest 20, p. 35-68.

  • Deposit

    Kennison, J.E., 1966, The Mission Copper Deposit, Arizona, In Titley, S.R., And Hicks, C.L., Eds., Geology Of The Porphyry Copper Deposits, Southwestrn North America: Tucson, University Of Arizona Press, P. 281-287.

  • Geology

    Einaudi, M.T., 1982, Description of skarns associated with porphyry copper plutons, in Titley, S.R., ed., Advances in geology of the porphyry copper deposits, southwestern North America: Tucson, University of Arizona Press, p. 139-183.

  • Deposit

    World Mining, 1972, Pima Mining Five Year Ore Production And Copper Sales: Mining World, Jan 1972, P. 57.

  • Geology

    Williamson, R.L., and Poulton, M.M., 1995, The geology of the Mineral Hill area, Mission mine, Pima County, Arizona, in Pierce, F.W., and Bolm, J.G., eds., Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest 20,

  • Geology

    The Porter GeoConsultancy webpage for the Mission Complex contains a lengthy description of the geology. Accessed on 8/16/2010.
    http://www.portergeo.com.au/

  • Deposit

    Keith, S.B., 1974, Index Of Mining Properties In Pima County, Arizona: Arizona Bureau Of Mines Bulletin 189, P. 136.

  • Deposit

    Walenga, Karen, 1989, Mission, Ray Expansion To Assure Copper Feed: Overall Project Will Reduce Need For Outside Sources, Cut Costs: Southwestern Pay Dirt, March 1989, P. 4a-8a.

  • Deposit

    Dayton, S.H., 1988, Mission Today, Trim, Efficient, And In Third-Stage Growth: Engineering And Mining Journal, V. 189, No. 9, P. 35-41.

  • Deposit

    Argall, G., Jr., 1962, Asarco'S Mission Copper: Mining World, V. 24, No. 1, P. 19-42.

  • Deposit

    Niemuth, N.J., 1987, Arizona Mineral Development 1984-1986: Arizona Department Of Mines And Mineral Resources Directory 29, 46 P.

  • Deposit

    Elevatorski, E.A., 1983, Bulk-Tonnage Metal Deposits: Dana Point, Calif., Minobras Mining Services, P. 165.

  • Deposit

    1956 Direxpl Asarc

  • Deposit

    Shafiqullah, M. and Langlois, J.D., 1978, The Pima mining district, Arizona, a geochronologic update; in James, H.L., Callender, J.F., Wilt, J.C. and Clemons, R.E., eds., Land of Cochise, Southeast Arizona, New Mexico Geological Society and Arizona Geological Society, Field Conference Guidebook 29, p. 321-327.

  • Deposit

    Vugteveen, R. Asarco Mining Operations in Arizona: CHM 110 Online course. Accessed 8/26/2010
    http://elmhcx9.elmhurst.edu/~chm/onlcourse/chm110/outlines/haydencopper.html

General comments

Subject category Comment text
Deposit Bulk Of Replacement Ore In Garnet And Pyroxene Tactites; 2 Mi Wide Alteration Halo.
Deposit Higher Grade Cu In Tactite Limestone Zone. Lower Grade Dissemanat Ions In Porphyry And Cret Arkose. Molybdenum Mainly Is Disseminations In Porphyry. Supergene Sulfides Bottom At 382 Ft Level

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-83 Peterson, Jocelyn A. U.S. Geological Survey
Updater 01-DEC-89 Bolm, Karen S. U.S. Geological Survey
Updater 01-JUL-92 Peterson, Jocelyn A. U.S. Geological Survey
Updater 18-APR-94 Orris, Greta J. U.S. Geological Survey
Reporter 24-OCT-97 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines
Reporter 26-MAY-93 Amaro, R. U.S. Bureau of Mines
Reporter 04-NOV-83 ADMR U.S. Bureau of Mines
Updater 07-AUG-09 Anderson, Claire U.S. Geological Survey
Editor 16-AUG-10 Schruben, Paul U.S. Geological Survey Revised production and reserves.

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Current status (per MSHA)

StatusActive since 11/03/2016
MSHA mine ID0200135
Mine name (MSHA)MISSION/SAN XAVIER/EISENHOWER
Current operatorASARCO LLC, a Delaware Limited Liability Company
Current controller (parent)Grupo Mexico S A B de C V
Mine typeSurface (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

  • Asarco (American Smelting And Refining Co.) — acquired by Asarco LLC, subsidiary of Grupo México (2009)
    American Smelting and Refining Co. Filed Chapter 11 in 2005; acquired out of bankruptcy by Grupo México in 2009.

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

External references

Maps centered on this site

Authoritative Arizona resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.