Mining Incidents
Search Operators Mines Alerts Research Controllers Fatalgrams About
Countries
Peru Chile
English Español
Abandoned mines › Wyoming
Abandoned mine inventory

Abandoned mines in Park County, Wyoming

Park County, Wyoming has 179 mine and prospect features on USGS topographic maps published 1911–1989, including 37 mine openings (shafts, adits and air shafts) and 46 prospect pits; 30 of the features carry a name on the map. OSMRE's abandoned mine land inventory lists 81 problems in the county, 12 of them not yet reclaimed. MSHA's register carries 37 mines in the county with status Abandoned or Abandoned and Sealed.

Every mine and prospect feature the USGS digitized from historical topographic maps covering Park County, every OSMRE abandoned mine land problem in the county, and every MSHA-registered mine here with status Abandoned. Named features are listed below; unnamed ones are counted by type. Locations are deliberately not shown: this page says what abandoned workings are in the county, not where to find them. They are dangerous and should not be entered.

Mapped mine features (USGS)
179
Mine openings
37
OSMRE problems unreclaimed
12
MSHA mines marked abandoned
37
30 features carry a name46 prospect pits46 quadrangle maps, published 1911–1989 81 OSMRE problems, 69 reclaimed 0 MSHA mines abandoned and sealed
What the features are
  1. Mine openings
    shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
    70 26.9%
  2. Prospect pits and trenches
    shallow exploration diggings that never became a mine
    46 17.7%
  3. Mines and surface workings
    labelled mines, open pits, strip mines, placer and hydraulic workings
    15 5.8%
  4. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    77 29.6%
  5. Dumps, tailings, spoil and gob
    what mining left above ground
    24 9.2%
  6. Mills, tipples and facilities
    processing plants and hazardous structures
    4 1.5%
  7. Other reclamation problems
    highwalls, subsidence, polluted or clogged water, fires, slides and gases in OSMRE's inventory
    24 9.2%
Named features on the maps30 named · from the USGS compilation
Name on map Feature
Anaconda Mine Adit
Black Diamond Mine Open Pit Mine
Bryan Mine Adit
Crouch Mine Adit
Eagle Mine Open Pit Mine
Evening Star Mine Adit
Evening Star Mine Adit
Frost Cave Adit
Gold Reef Tunnel Adit
Golden Ridge Tunnel Adit
Iowa Mine Adit
Irma Mines Mine Shaft
Little Johnnie Mine Adit
Longhorn Mine Adit
Manilla Mine Adit
Mattice Tunnel Adit
Mendota Mine Adit
Molly Logan Mine Adit
Newton Prospect Adit
Newton Prospect Prospect Pit
Novelty Mine Adit
Novelty Mine Prospect Pit
Oregon Mine Adit
Painter Mine Adit
Painter Mine Adit
Pickwick Mine Adit
Smuggler Mine Adit
Tumlum Mine Mine Shaft
Wiley Mine Open Pit Mine
Wolf Shaft Mine Shaft

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.

OSMRE abandoned mine land problems81 on inventory
Problem area Problem Status
Bghr1016 P3 Pits Reclamation Completed
Bghr1016 P3 Spoil Area Reclamation Completed
Big Horn Gypsum P2 Dangerous Piles & Embankments Reclamation Completed
Bloom PARK1048 P2 Portals Reclamation Completed
Bloom PARK1048 P2 Vertical Openings Reclamation Completed
Bloom PARK1048 P3 Spoil Area Reclamation Completed
Cody Quarry P1 Dangerous Highwalls Reclamation Completed
Cody Quarry P2 Dangerous Highwalls Reclamation Completed
Cody Deposits P1 Portals Reclamation Completed
Cody Deposits P2 Dangerous Highwalls Reclamation Completed
Cody Deposits P3 Spoil Area Reclamation Completed
Cody Deposits East P2 Dangerous Highwalls Reclamation Completed
Cody Deposits East P2 Portals Reclamation Completed
Cody Deposits East P2 Vertical Openings Reclamation Completed
Cody Deposits East P3 High Wall Reclamation Completed
Cody Deposits East P3 Pits Reclamation Completed
Cody Deposits East P3 Spoil Area Reclamation Completed
Cody Deposits East P3 Spoil Area Reclamation Completed
Copper King - Winona Mining Co P2 Portals In Reclamation
Cottonwood Creek Bentonite PARK0010 P2 Portals Reclamation Completed
Cottonwood Creek Bentonite PARK0010 P3 Pits Reclamation Completed
Cottonwood Creek Bentonite PARK0010 P3 Spoil Area Reclamation Completed
Double D P2 Hazardous Equip & Facilities Reclamation Completed
Duncan (coal) P2 Vertical Openings Reclamation Completed
Duncan (coal) P3 Gobs Reclamation Completed
Elk Basin Coal Mine Park0020 P2 Portals Reclamation Completed
Elk Basin Coal Mine Park0020 P3 Gobs Reclamation Completed
Gold Reef Tunnel P2 Portals Reclamation Completed
Golden (galena) Tunnel-park1002 P2 Portals Reclamation Completed
Grove Creek P2 Vertical Openings Reclamation Completed
Honeysett P3 Gobs Reclamation Completed
HooDoo-Tip Top-Copper King P2 Portals Reclamation Completed
Ice Lake Pit PARK1047 P3 Pits Reclamation Completed
Indian Pass P2 Dangerous Highwalls Reclamation Completed
Indian Pass P3 Pits Reclamation Completed
Indian Pass P3 Spoil Area Reclamation Completed
Indian Pass 2 P2 Dangerous Highwalls Reclamation Completed
Indian Pass 2 P3 Spoil Area Reclamation Completed
Kirwin Ghost Town Area P2 Hazardous Equip & Facilities Reclamation Completed
Kirwin Ghost Town Area P2 Portals Reclamation Completed
Little Polecat Baby Mine Park0033 P2 Portals Reclamation Completed
Little Polecat Baby Mine Park0033 P3 Gobs Reclamation Completed
Little Polecat Prospect Park0030 P2 Portals Reclamation Completed
Little Polecat Prospect Park0030 P2 Vertical Openings Reclamation Completed
Little Polecat Prospect Park0030 P3 Gobs Reclamation Completed
Mcminn Mine - Ynp P2 Portals Reclamation Completed
Mcminn Mine - Ynp P3 Gobs Reclamation Completed
Newton Prospect P2 Portals Reclamation Completed
Painter Mine on Topo P3 Equipment Facility Reclamation Pending
Park0024 P3 Pits Reclamation Pending
Park0032 P3 Pits Reclamation Pending
Park0034 P3 Pits Reclamation Pending
Park0035 P3 Pits Reclamation Pending
Park0036 P3 Pits Reclamation Pending
Park1023 P2 Portals Reclamation Completed
Park1024 P2 Portals Reclamation Completed
Park1024 P3 Spoil Area Reclamation Completed
Park1025 P2 Portals Reclamation Completed
Park1025 P3 Gobs Reclamation Completed
Park1029 P2 Hazardous Equip & Facilities Reclamation Completed
Park1029 P2 Portals Reclamation Completed
Park1029 P2 Vertical Openings Reclamation Completed
Pickwick Mine Area (PARK1006) P1 Vertical Openings Reclamation Completed
Pickwick Mine Area (PARK1006) P2 Portals Reclamation Completed
Polecat Bench Ug Park0016 P2 Portals Reclamation Completed
Polecat Bench Ug Park0016 P3 Gobs Reclamation Completed
Rader Prospect P2 Portals In Reclamation
Rader Prospect P3 Gobs In Reclamation
Rader Prospect P3 Mine Opening In Reclamation
Sedge Creek Pit PARK1031 P2 Dangerous Highwalls Reclamation Completed
Sedge Creek Pit PARK1031 P3 Pits Reclamation Completed
Stinkingwater Mining Region P2 Portals Reclamation Pending
Stinkingwater Mining Region P2 Vertical Openings Reclamation Pending
Sulfur Creek Deposits P1 Portals Reclamation Completed
Sulfur Creek Deposits P2 Dangerous Highwalls Reclamation Completed
Sulfur Creek Deposits P3 Pits Reclamation Completed
Sulfur Creek Deposits P3 Spoil Area Reclamation Completed
Tumlum / Park1005 P2 Vertical Openings Reclamation Completed
Wolf Shaft / Park1003 P2 Hazardous Equip & Facilities Reclamation Completed
Wolf Shaft / Park1003 P2 Vertical Openings Reclamation Completed
Wolf Shaft / Park1003 P3 Equipment Facility Reclamation Completed

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.

MSHA-registered mines with status Abandoned37 on register
  1. Althoff Sand & Gravel Pit
    Surface metal/non-metal · Althoff Inc · MSHA ID 4801075
    Abandoned
  2. Big Dog #1
    Surface metal/non-metal · Harris Trucking & Construction Company · MSHA ID 4801448
    Abandoned
  3. Black Rock Pit
    Surface metal/non-metal · Cody Concrete Inc · MSHA ID 4801466
    Abandoned
  4. Buffalo Bill Dam Modifica-Riprap
    Surface metal/non-metal · K2b Constructors Inc · MSHA ID 4801456
    Abandoned
  5. Cody Mill
    Surface metal/non-metal · Celotex Corp · MSHA ID 4800156
    Abandoned
  6. Cody Mine
    Surface metal/non-metal · Future Enterprises LLC · MSHA ID 4801639
    Abandoned
  7. Colton-Chase #1
    Surface metal/non-metal · Spencer Smith Construction · MSHA ID 4801527
    Abandoned
  8. Cooley Pit 735-ET
    Surface metal/non-metal · Reiter Construction LLC · MSHA ID 4801500
    Abandoned
  9. Cozzens Pit
    Surface metal/non-metal · Fry Gravel & Excavation Inc · MSHA ID 4801701
    Abandoned
  10. CR2
    Surface metal/non-metal · Lewis Costruction L.C. · MSHA ID 4801689
    Abandoned
  11. Denney Pit
    Surface metal/non-metal · Jerry Denney · MSHA ID 4801731
    Abandoned
  12. Dutton Pit
    Surface metal/non-metal · Althoff Inc · MSHA ID 4801197
    Abandoned
  13. Dutton Pit
    Surface metal/non-metal · Brasel & Sims Construction Company · MSHA ID 4801268
    Abandoned
  14. FEELY PIT WASH PLANT
    Surface metal/non-metal · Big Horn Redi-Mix Inc · MSHA ID 4800266
    Abandoned
  15. Hart Garland Mine
    Surface metal/non-metal · Spomer Construction Co Inc · MSHA ID 4801690
    Abandoned
  16. Kirwin Project
    Surface metal/non-metal · C-M Inc · MSHA ID 4800189
    Abandoned
  17. Morning Star
    Underground metal/non-metal · Weaver Mining · MSHA ID 4801288
    Abandoned
  18. North Fork Pit
    Surface metal/non-metal · Wapiti Marble Company · MSHA ID 4801467
    Abandoned
  19. P C M Crusher
    Surface metal/non-metal · P C M Inc · MSHA ID 4801359
    Abandoned
  20. P C M Wash Plant
    Surface metal/non-metal · P C M Inc · MSHA ID 4801455
    Abandoned
  21. Park County Sand And Gravel Pit
    Surface metal/non-metal · Harris Trucking & Construction Company · MSHA ID 4801017
    Abandoned
  22. Pat O'Hara Sand And Gravel Pit
    Surface metal/non-metal · Pat O'Hara Company · MSHA ID 4801074
    Abandoned
  23. Portable Crusher 2
    Surface metal/non-metal · AM Dirtworks · MSHA ID 4801795
    Abandoned
  24. PORTABLE SCREEN #1
    Surface metal/non-metal · LM Excavation · MSHA ID 4801588
    Abandoned
  25. Rental screen plant
    Surface metal/non-metal · Century Construction · MSHA ID 4801661
    Abandoned
  26. Russell Creek Pit
    Surface metal/non-metal · Nicholls & Lewis Concrete · MSHA ID 4801255
    Abandoned
  27. Screen #1
    Surface metal/non-metal · Kobbe Construction Partnership · MSHA ID 4801663
    Abandoned
  28. Screening Plant
    Surface metal/non-metal · Harris Trucking & Construction Company · MSHA ID 4801447
    Abandoned
  29. Screening Plant No One
    Surface metal/non-metal · Asi-Moltz · MSHA ID 4801493
    Abandoned
  30. Spomer #1
    Surface metal/non-metal · SPOMER CONSTRUCTION CO., INC. · MSHA ID 4801512
    Abandoned
  31. SYNDERGUARD PIT
    Surface metal/non-metal · Kylander Construction Company · MSHA ID 4800282
    Abandoned
  32. THOMAS PIT
    Surface metal/non-metal · INTERMOUNTAIN EXCAVATION LLC · MSHA ID 4801615
    Abandoned
  33. Unit 71
    Surface metal/non-metal · Kinkade Construction Inc · MSHA ID 4801462
    Abandoned
  34. WHITLOCK CONSTRUCTION PORTABLE
    Surface metal/non-metal · Whitlock Construction & Supply Inc · MSHA ID 4801559
    Abandoned
  35. Willis Young Cement & Gravel
    Surface metal/non-metal · Willis Young Cement & Gravel Company · MSHA ID 4801182
    Abandoned
  36. Willy Pit
    Surface metal/non-metal · Big Horn Redi Mix Inc · MSHA ID 4801722
    Abandoned
  37. Younglove Pit
    Surface metal/non-metal · Harris Trucking & Construction Company · MSHA ID 4801183
    Abandoned

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

By source vocabularythe publishers' own terms
Feature type Features
Prospect Pit 46
Gravel Pit 41
Gravel Pit 31
Adit 30
P2 Portals 21
P3 Pits 12
P3 Spoil Area 10
P3 Gobs 9
Open Pit Mine 9
P2 Vertical Openings 9
P2 Dangerous Highwalls 7
Mine Shaft 7
Open Pit Mine 4
P2 Hazardous Equip & Facilities 4
Tailings - Undifferentiated 3
P3 Equipment Facility 2
Clay Pit 2
Open Pit Mine or Quarry 2
Clay Pit 2
P1 Portals 2
P3 Mine Opening 1
P3 High Wall 1
Quarry 1
P1 Dangerous Highwalls 1
P1 Vertical Openings 1
P2 Dangerous Piles & Embankments 1
Mine Dump 1
Other counties in WyomingAll counties →
How to read these numbers

A USGS feature is a symbol on a historical topographic map, there when the map was surveyed; it may since have been sealed, reclaimed, built over or reopened as a working mine, and the map does not say which. An OSMRE row is a problem the abandoned mine land program tracks, not a mine. An MSHA mine is a registered operation whose operator reported abandonment, a record that starts in the 1970s. The three overlap and are never added together. The county is assigned from each feature's coordinates against the Census 2023 county boundaries. The full method is on the national page.

Sources
  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.