Abandoned mines in Park County, Montana

1. Mine openings

   shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
   154 34.0%
2. Prospect pits and trenches

   shallow exploration diggings that never became a mine
   158 34.9%
3. Mines and surface workings

   labelled mines, open pits, strip mines, placer and hydraulic workings
   25 5.5%
4. Quarries, gravel and borrow pits

   construction-material and industrial-mineral extraction
   59 13.0%
5. Dumps, tailings, spoil and gob

   what mining left above ground
   29 6.4%
6. Mills, tipples and facilities

   processing plants and hazardous structures
   10 2.2%
7. Other reclamation problems

   highwalls, subsidence, polluted or clogged water, fires, slides and gases in OSMRE's inventory
   18 4.0%

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. 269 Chico Cemetery Land Reclamation

   Surface metal/non-metal · Paradise Valley Aggregate · MSHA ID 2402820
   Abandoned 2026-04-22
2. 9th Street Island Pit

   Surface metal/non-metal · Eggar Construction Company · MSHA ID 2400458
   Abandoned 1991-08-02
3. Anderson Mine

   Surface metal/non-metal · Anderson Mine · MSHA ID 2401718
   Abandoned 1984-11-15
4. B & N Portable Crusher

   Surface metal/non-metal · B & N Construction Inc · MSHA ID 2401495
   Abandoned 1984-10-29
5. BLACK DIAMOND AGGREGATES INC

   Surface metal/non-metal · Black Diamond Aggregates Inc · MSHA ID 2402138
   Abandoned 1998-10-19
6. Brandon'S S & G Portable Crusher

   Surface metal/non-metal · Brandon'S Construction Inc · MSHA ID 2401808
   Abandoned 1988-08-02
7. C.I.B. CRUSHER/SCREEN PLANT

   Surface metal/non-metal · C I B Gravel · MSHA ID 2402169
   Abandoned 2024-05-02
8. Crevice Mine

   Surface metal/non-metal · Crevice Mining Group LLC · MSHA ID 2402740
   Abandoned 2019-10-29
9. CUTTING & POLISHING PLANT

   Surface metal/non-metal · T Patrick O'Hara · MSHA ID 2400660
   Abandoned 2005-04-29
10. Durgan Rock Pile

    Surface metal/non-metal · Durgan Rock Pile · MSHA ID 2402298
    Abandoned 2013-05-06
11. Gardiner Quarry

    Surface metal/non-metal · Hallett Minerals Company · MSHA ID 2401598
    Abandoned 1984-11-15
12. Gardiner Travertine Saw Plant

    Surface metal/non-metal · Gardiner Travertine Company · MSHA ID 2401298
    Abandoned 1978-10-25
13. Glen Garry Mine

    Underground metal/non-metal · Denver Grouting-Division/Hayward Baker · MSHA ID 2402332
    Abandoned 2003-11-03
14. Gold Dust Adit

    Underground metal/non-metal · Crown Butte Mines Inc · MSHA ID 2401952
    Abandoned 1992-11-10
15. Gold Quarry

    Surface metal/non-metal · Young Stone Masonry · MSHA ID 2402083
    Abandoned 1996-06-18
16. Manganese Placer

    Surface metal/non-metal · Alan Wright · MSHA ID 2401716
    Abandoned 1983-08-27
17. Merriman Quarry

    Surface metal/non-metal · Peter Kiewit Sons' Company · MSHA ID 2401415
    Abandoned 1982-12-16
18. Mill Creek Pit

    Surface metal/non-metal · Eggar Construction Company · MSHA ID 2400807
    Abandoned 1979-09-05
19. Mineral Hill Mine

    Underground metal/non-metal · TVX Mineral Hill Inc · MSHA ID 2401145
    Abandoned 2003-03-10
20. MISSION PIT

    Surface metal/non-metal · Eggar Construction Service · MSHA ID 2401500
    Abandoned 2002-07-15
21. Mohawk Mine

    Underground metal/non-metal · Darrell Crabb · MSHA ID 2401492
    Abandoned 1982-10-27
22. Park County

    Surface metal/non-metal · Park County · MSHA ID 2401498
    Abandoned 1995-08-02
23. Pittsburg Placer MMC 7391

    Surface metal/non-metal · Advanced Resource Technologies Art LLC · MSHA ID 2402637
    Abandoned 2014-02-07
24. Portable Crusher & Screen #1

    Surface metal/non-metal · Koontz Construction Inc · MSHA ID 2401926
    Abandoned 1990-08-20
25. Road shop staging area

    Surface metal/non-metal · Park County Road · MSHA ID 2402796
    Abandoned 2026-04-13
26. Royal Teton Portable Crusher

    Surface metal/non-metal · Royal Teton Ranch · MSHA ID 2401741
    Abandoned 1994-09-08
27. S.T.S. GRAVEL

    Surface metal/non-metal · S T S Gravel · MSHA ID 2401501
    Abandoned 2008-10-01
28. TRAVERTINE QUARRY

    Surface metal/non-metal · Montana Travertine · MSHA ID 2400016
    Abandoned 2004-11-30
29. Yellowstone Travertine

    Surface metal/non-metal · Yellowstone Travertine · MSHA ID 2401297
    Abandoned 1980-11-03

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

• Madison County 3,766
• Silver Bow County 2,397
• Jefferson County 1,973
• Lewis and Clark County 1,862
• Broadwater County 1,418
• Beaverhead County 1,378
• Carbon County 769
• Powell County 741
• Granite County 719
• Cascade County 708
• Deer Lodge County 688
• Fergus County 550

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.