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  3. Mineral Resource Data System (MRDS)

Silver Bell Mill

Producer in Pima county in Arizona, United States with commodity Copper
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Land status
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10259563
MRDS ID D002948
MAS/MILS ID 0040190075
Record type Site
Current site name Silver Bell Mill
Related records 60000298

Geographic coordinates

Point of reference Trench
Geographic coordinates: -111.541, 32.42041 (WGS84)
Elevation 793
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Silver Bell West(quadrangle 1:24,000 scale)

Silver Bell Mountains(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Santa Cruz(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 012 S 008 E 04 NENENE Arizona

Commodities

Commodity Importance
Copper Primary

Nearby scientific data

Trench (1) -111.541, 32.42041
ListMap

Economic information

Economic information about the deposit and operations

Operation type Processing Plant
Development status Producer
Commodity type Metallic
Significant No

Land status

Ownership category Unknown

Ownership information

  • Type Unknown
    Owner Asarco (American Smelting And Refining Co.)
    ID 200851

Reference information

Bibliographic references

  • Deposit

    OP:ASARCO INC.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-NOV-1983 Long/Mt U.S. Bureau of Mines

Beyond USGS

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

Current status (per MSHA)

StatusAbandoned since 03/27/1993
MSHA mine ID0200851
Mine name (MSHA)Silver Bell Mill
Current operatorAsarco Inc
Mine typeFacility (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.

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.