Abandoned mines in Rio Arriba County, New Mexico

1. Mine openings

   shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
   72 20.5%
2. Prospect pits and trenches

   shallow exploration diggings that never became a mine
   164 46.6%
3. Mines and surface workings

   labelled mines, open pits, strip mines, placer and hydraulic workings
   46 13.1%
4. Quarries, gravel and borrow pits

   construction-material and industrial-mineral extraction
   54 15.3%
5. Dumps, tailings, spoil and gob

   what mining left above ground
   12 3.4%
6. Mills, tipples and facilities

   processing plants and hazardous structures
   1 0.3%
7. Other reclamation problems

   highwalls, subsidence, polluted or clogged water, fires, slides and gases in OSMRE's inventory
   3 0.9%

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. Abiquiu Sand & Gravel Company

   Surface metal/non-metal · Abiquiu Sand & Gravel Company · MSHA ID 2902166
   Abandoned 2012-10-02
2. BOBBY GARCIA TRUCKING INC

   Surface metal/non-metal · Bobby Garcia Trucking Inc · MSHA ID 2902215
   Abandoned 2011-09-07
3. BRAZOS SAND & GRAVEL

   Surface metal/non-metal · Freeland Inc · MSHA ID 2902193
   Abandoned 2009-07-08
4. Caranta #3 Ug

   Underground coal · Stanley Idzior · MSHA ID 2900091
   Abandoned 1971-02-12
5. Casados Pit

   Surface metal/non-metal · Russell Sand & Gravel Company Inc · MSHA ID 2902204
   Abandoned 2023-09-06
6. COPAR MILL

   Surface metal/non-metal · Copar Pumice Company, Inc. · MSHA ID 2901129
   Abandoned 2008-05-12
7. CRUSHER #1

   Surface metal/non-metal · Apache Construction Company Inc · MSHA ID 2902160
   Abandoned 1998-11-12
8. Crusher HW1

   Surface metal/non-metal · James Hamilton Construction Co. · MSHA ID 2902016
   Abandoned 2013-11-06
9. Pajarito Pit

   Surface metal/non-metal · Espanola Transit Mix Company · MSHA ID 2900449
   Abandoned 1978-03-10
10. Pine Canyon Pit

    Surface metal/non-metal · Paisano Nodaway Enterprises Inc · MSHA ID 2901704
    Abandoned 1979-03-30
11. Pit No B-01294

    Surface metal/non-metal · New Mexico State Highway Department · MSHA ID 2901446
    Abandoned 1979-03-21
12. Portable #3

    Surface metal/non-metal · H & H Brosious LLC · MSHA ID 2902373
    Abandoned 2009-10-23
13. Portable Crusher

    Surface metal/non-metal · Ethco Enterprise Inc · MSHA ID 2901980
    Abandoned 1989-07-01
14. PORTABLE CRUSHER

    Surface metal/non-metal · Espanola Transit Mix Company · MSHA ID 2901990
    Abandoned 1999-02-19
15. Portable Crushing Plant No 1

    Surface metal/non-metal · Southway Construction Company Inc · MSHA ID 2901751
    Abandoned 1985-07-16
16. PORTABLE SCREEN #1

    Surface metal/non-metal · Z-4 ENTERPRISES INC · MSHA ID 2902230
    Abandoned 2006-03-08
17. Portable Screener #1

    Surface metal/non-metal · Red Hill Lava Products, Inc. · MSHA ID 2902158
    Abandoned 2026-02-13
18. Rental Equipment

    Surface metal/non-metal · Brasier Bitcam LLC · MSHA ID 2902378
    Abandoned 2009-03-11
19. San Anton Mountain Pit

    Surface metal/non-metal · Colorado Aggregate Company Inc · MSHA ID 2901002
    Abandoned 1980-05-30
20. San Juan Plant

    Facility metal/non-metal · CR Minerals Company LLC · MSHA ID 2900812
    Abandoned 2021-01-28
21. San Juan Pueblo Mine

    Surface metal/non-metal · Espanola Transit Mix Company · MSHA ID 2902011
    Abandoned 1988-03-31
22. Screen Unit

    Surface metal/non-metal · Colorado Quarries Inc · MSHA ID 0505103
    Abandoned 2023-08-02
23. Sebastian & Martin Pit

    Surface metal/non-metal · New Mexico State Highway Department · MSHA ID 2901396
    Abandoned 1979-03-21
24. TSAY S & G

    Surface metal/non-metal · Tsay Construction · MSHA ID 2902175
    Abandoned 1999-01-08
25. Velarde Mill

    Facility metal/non-metal · Oglebay Norton Specialty Mineral Incorporated · MSHA ID 2900751
    Abandoned 2005-09-29
26. Velarde Pit

    Surface metal/non-metal · W W Construction Inc · MSHA ID 2901989
    Abandoned 1996-01-01
27. Velarde Pit

    Surface metal/non-metal · Coppola Mining, LLC · MSHA ID 2902417
    Abandoned 2016-01-05

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

• Grant County 5,221
• Hidalgo County 1,747
• Sierra County 1,497
• Socorro County 1,259
• Luna County 1,164
• Lea County 890
• Lincoln County 803
• Sandoval County 650
• McKinley County 621
• Eddy County 591
• Santa Fe County 566
• Doña Ana County 482

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.