Abandoned mines in Graham County, Arizona

1. Mine openings

   shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
   177 26.9%
2. Prospect pits and trenches

   shallow exploration diggings that never became a mine
   385 58.6%
3. Mines and surface workings

   labelled mines, open pits, strip mines, placer and hydraulic workings
   36 5.5%
4. Quarries, gravel and borrow pits

   construction-material and industrial-mineral extraction
   52 7.9%
5. Dumps, tailings, spoil and gob

   what mining left above ground
   7 1.1%

A name is the label printed beside the symbol on the map. "First mapped" is the earliest topographic edition that shows the symbol, which bounds the feature's age from above; it is not the date it was worked. Unnamed features (most prospect pits, adits and shafts carry no label) are in the counts above but not this list.

Problem types carry OSMRE's priority prefix: P1 and P2 are threats to health, safety and property, P3 is environmental. A problem area is a cluster of problems reclaimed as one project; several rows can share one location.

1. Arizona Prison Safford

   Surface metal/non-metal · Arizona State Prison · MSHA ID 0202591
   Abandoned 1993-10-05
2. Daley Pit

   Surface metal/non-metal · J T S Construction Inc. · MSHA ID 0202609
   Abandoned 2006-06-07
3. DalMolin Evcavating, Inc.

   Surface metal/non-metal · DalMolin Excavating, Inc. · MSHA ID 0203174
   Abandoned 2007-07-23
4. Graham County Crusher

   Surface metal/non-metal · Graham County Highway Department · MSHA ID 0201432
   Abandoned 1980-04-30
5. Graham Pit

   Surface metal/non-metal · Smith & Bell Construction Company · MSHA ID 0202543
   Abandoned 2012-03-21
6. LoneStar Exploration Project

   Underground metal/non-metal · Freeport McMoRan Safford Inc · MSHA ID 0203224
   Abandoned 2008-11-03
7. MATTHEWSVILLE GRAVEL PIT

   Surface metal/non-metal · Matthewsville Excavating · MSHA ID 0202880
   Abandoned 2012-09-17
8. NGU Contracting Inc.

   Surface metal/non-metal · NGU Contracting Inc. · MSHA ID 0203400
   Abandoned 2020-07-27
9. Pit No 1

   Surface metal/non-metal · Ray Hatch Sand & Gravel Contractor · MSHA ID 0201788
   Abandoned 1978-10-03
10. Pumice #2

    Surface metal/non-metal · Gila Valley Block Company · MSHA ID 0200176
    Abandoned 1989-03-29
11. Safford Branch

    Underground metal/non-metal · Phelps Dodge Corp · MSHA ID 0200299
    Abandoned 1984-09-27
12. San Juan Mine

    Facility metal/non-metal · Cochise Mining Corp · MSHA ID 0200833
    Abandoned 1980-04-18
13. Stevens Ranch Pit

    Surface metal/non-metal · Sulenta Construction Company Inc · MSHA ID 0202414
    Abandoned 1988-10-12
14. Tiox Project

    Surface metal/non-metal · Minco Inc · MSHA ID 0202252
    Abandoned 1985-06-06
15. TONTO PIT #1

    Surface metal/non-metal · Tonto Redi-Mix · MSHA ID 0202800
    Abandoned 1999-09-09

Status and date are as reported to MSHA by the operator. Each mine's own page carries its accident, citation and inspection record.

• Mohave County 5,749
• La Paz County 5,030
• Pima County 4,684
• Yavapai County 3,585
• Gila County 3,401
• Pinal County 3,289
• Maricopa County 3,227
• Cochise County 3,108
• Yuma County 1,743
• Santa Cruz County 1,696
• Coconino County 1,397
• Greenlee County 1,312

1. USGS, Consolidated Prospect- and Mine-Related Features from 7.5- and 15-Minute Topographic Quadrangle Maps of the United States (USMIN)
   597,612 point and area features digitized from about 106,350 historical topographic maps published 1886–2006; public domain (CC0). A feature is a map symbol, not a field-verified site, and the map does not say whether it was still worked.
2. USGS Fact Sheet 2025–3003, The Abandoned Mine Inventory of the United States
   States that as of 2025 there is no comprehensive national inventory of abandoned mine features, and that the detailed national database now being built will not be published.
3. OSMRE, Abandoned Mine Land Inventory System (e-AMLIS), public Problems layer
   One row per abandoned mine land problem in a problem area, with its type, funding program and reclamation status; mostly coal mined before the 1977 Surface Mining Control and Reclamation Act. Coordinates are the problem area's.
4. MSHA, Mines dataset (Mine Data Retrieval System)
   Every mine registered with MSHA since the 1970s; a mine reads Abandoned or Abandoned and Sealed when its operator reported that status. Refreshed weekly.
5. US Census Bureau, 2023 cartographic county boundaries (1:500,000)
   Each feature's county is assigned by its coordinates against these boundaries, not copied from the source file.
6. GAO-20-238, Abandoned Hardrock Mines (March 2020)
   Federal agencies had identified at least 140,000 abandoned hardrock mine features on federal land and estimated more than 390,000 more not yet captured in their databases.
7. Abandoned Hardrock Mine Reclamation (AHMR) Program, US Department of the Interior
   The program the USGS inventory is compiled for. Its appropriations and the 674,000 field-confirmed feature count on this page were provided by the program manager, Office of Environmental Policy and Compliance, and are cited with permission (2026-09-08).
8. IMCC-NAAMLP Hardrock AML Report
   Page 48 carries the two figures this page leans on: USGS estimates 633,181 of the 725,690 mine features it recorded from historic topographic maps, 87 percent, are hardrock; and state and federal agencies have submitted more than 724,000 AML features to the national database being built, already more than the historic maps hold. Year-by-year AHMR funding is on page 35.