Mining Incidents
Abandoned mine inventory

Abandoned mines in Utah County, Utah

Utah County, Utah has 2,096 mine and prospect features on USGS topographic maps published 1915–2001, including 614 mine openings (shafts, adits and air shafts) and 1,151 prospect pits; 156 of the features carry a name on the map. OSMRE's abandoned mine land inventory lists 19 problems in the county, 2 of them not yet reclaimed. MSHA's register carries 106 mines in the county with status Abandoned or Abandoned and Sealed.

Every mine and prospect feature the USGS digitized from historical topographic maps covering Utah 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)
2,096
Mine openings
614
OSMRE problems unreclaimed
2
MSHA mines marked abandoned
106
156 features carry a name1,151 prospect pits48 quadrangle maps, published 1915–2001 19 OSMRE problems, 17 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
    631 29.8%
  2. Prospect pits and trenches
    shallow exploration diggings that never became a mine
    1,151 54.4%
  3. Mines and surface workings
    labelled mines, open pits, strip mines, placer and hydraulic workings
    53 2.5%
  4. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    214 10.1%
  5. Dumps, tailings, spoil and gob
    what mining left above ground
    64 3.0%
  6. Other reclamation problems
    highwalls, subsidence, polluted or clogged water, fires, slides and gases in OSMRE's inventory
    2 0.1%
Named features on the maps156 named · from the USGS compilation
Name on map Feature
Apex Standard No 1 Mine Shaft
Apex Standard No 2 Mine Dump area
Apex Standard No 2 Mine Shaft
Apex Standard No 2 Mine Shaft
Bay State Tunnel Adit
Beck No 2 Shaft Mine Shaft
Beck Tunnel No 1 Adit
Beck Tunnel No 2 Adit
Beck Tunnel No 2 Mine Dump area
Big Hill Shaft Mine Dump area
Big Hill Shaft Mine Shaft
Birdseye Quarry Quarry
Birdseye Quarry Quarry
Bluff Mine Dump area
Bluff Mine Shaft
Bog Mine Adit
Calcite Quarry Quarry
Calcite Quarry Quarry
Centennial Tunnel Adit
Central Standard Mine Dump area
Central Standard Mine Shaft
Chief Oxide/Burgin No 1 Mine Shaft
Colorado No 1 Mine Shaft
Colorado No 2 Mine Shaft
Copper Leaf Mine Shaft
Crotons Mine Adit
Crown Point Mine Shaft
Crown Point No 2 Mine Dump area
Crown Point No 2 Mine Shaft
Crown Point No 3 Mine Shaft
Dream Mine Adit
Dream Mine Adit
Dutchman Mine Adit
Earl-Eagle Mine Adit
East Crown Point Mine Shaft
East Dividend Mine Dump area
East Dividend Mine Shaft
East Standard Mine Shaft
East Standard Mine Shaft
East Tintic Coalition Mine Dump area
East Tintic Coalition Mine Shaft
Eureka Bullion Mine Shaft
Eureka Lily Mine Shaft
Eureka Standard Mine Dump area
Eureka Standard Mine Dump area
Eureka Standard Mine Dump area
Eureka Standard Mine Shaft
Eureka Standard Mine Shaft
Farragut Shaft Mine Shaft
Fields Prospect Prospect Pit
Globe Mines Adit
Golden Relief Mine Adit
Hansen Cave Adit
Homansville Shaft Mine Dump area
Homansville Shaft Mine Shaft
Hot Stuff Mine Adit
Hot Stuff Mine Adit
Hot Stuff Mine Mine Shaft
Humbug Tunnels Adit
Humbug Tunnels Adit
Independence Shaft Mine Shaft
Iron Blossom No 3 Mine Shaft
Iron Blossom No 3 Mine Shaft
Iron Blossom No 3 Prospect Pit
Iron King No 1 Mine Shaft
Iron King No 2 Mine Dump area
Iron King No 2 Mine Shaft
Iron King Tunnel Adit
Keigley Quarry Quarry area
Leader Mine Open Pit Mine
Lehi Tintic Adit
Lehi Tintic Mine Shaft
Lehi Tintic Mine Mine Shaft
Lime Quarry (Mine) Mine Dump area
Lime Quarry Mine Adit
Lime Quarry Mine Adit
Lime Quarry Mine Mine Shaft
Maple Shaft Mine Shaft
Midwest Tunnel Adit
Miller Hill Tunnel Adit
Mineral Flat Tunnels Adit
Montana Shaft Mine Shaft
Mountain Dell Mine Adit
Nelson Mine Adit
North Lily Shaft Mine Dump area
North Lily Shaft Mine Shaft
North Standard Mine Dump area
North Standard Mine Shaft
North Standard Open Pit Mine
Northern Spy Adit
Northern Spy Mine Dump area
Northern Spy Mine Shaft
Northern Spy Mine Shaft
Nutty Putty Cave Mine Shaft
Old Beck Tunnel Adit
Old Beck Tunnel Adit
Old Beck Tunnel Mine Dump area
Old Mayflower Mine Open Pit Mine
Old Mayflower Mine Prospect Pit
Old Spanish Mine Adit
Original Iron King Mine Dump area
Original Iron King Mine Shaft
Oxen Mine Shaft
Oxen Prospect Pit
Pacific Mine Adit
Pinyon Queen Mine Dump area
Pinyon Queen Mine Shaft
Provo Mine Shaft
RGW Tunnel Adit
Salvador Adit
Selma Mine Mine Shaft
Silver Bell Mine Adit
Silver Dollar Mine Adit
Silver Shield Adit
Silver Shield Mine Dump area
Sioux Consolidated Adit
Sioux Shaft Mine Shaft
Sioux Tunnel Adit
Slag Dump Slag Pile area
Slag Dump Slag Pile area
Smuggler Tunnel Adit
South Standard Mine Shaft
Sunday Tunnel Adit
Syndicate Mine Adit
Texan Tunnel Adit
Timpanogos Cave Adit
Tintic Davis Mine Shaft
Tintic Drain Tunnel Adit
Tintic Drain Tunnel Adit
Tintic Empire Mine Shaft
Tintic Empire Mine Mine Shaft
Tintic Paymaster Mine Shaft
Tintic Paymaster No 2 Mine Shaft
Tintic Standard No 1 Mine Dump area
Tintic Standard No 1 Mine Shaft
Tintic Standard No 2 Mine Shaft
Tintic Standard No 2 Open Pit Mine area
Tintic Standard No 3 Mine Shaft
Tintic Standard Nos 2 & 3 Mine Shaft
Tiptop Adit
Tiptop Prospect Pit
Trixie Prospect Pit
Trump Shaft/Trixie Mine Shaft
Uncle Sam Prospect Pit
Utah Adit
Utah Adit
Water Lilly Mine Shaft
Water Lily Mine Dump area
White Star Adit
Wyoming Tunnel Adit
Yankee Mine Dump area
Yankee Mine Dump area
Yankee Mine Dump area
Yankee Mine Shaft
Yankee Mines Adit
Zuma 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 problems19 on inventory
Problem area Problem Status
Dividend P1 Portals In Reclamation
Dividend P1 Vertical Openings In Reclamation
Fivemile Pass P1 Portals Reclamation Completed
Fivemile Pass P1 Subsidence Reclamation Completed
Fivemile Pass P1 Subsidence Reclamation Completed
Fivemile Pass P1 Vertical Openings Reclamation Completed
Fivemile Pass P1 Vertical Openings Reclamation Completed
Government Canyon P1 Portals Reclamation Completed
North Tintic East P1 Portals Reclamation Completed
North Tintic East P1 Vertical Openings Reclamation Completed
Ophir P1 Portals Reclamation Completed
Ophir P1 Portals Reclamation Completed
Ophir P1 Vertical Openings Reclamation Completed
Santaquin Pit P1 Portals Reclamation Completed
Santaquin Pit P1 Vertical Openings Reclamation Completed
Summit-American Fork P1 Portals Reclamation Completed
Summit-American Fork P1 Vertical Openings Reclamation Completed
Timpanogos North P1 Portals Reclamation Completed
Timpanogos South P1 Portals 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 Abandoned106 on register
  1. 24-1004
    Surface metal/non-metal · W. W. Clyde & Co. · MSHA ID 4201753
    Abandoned
  2. 24-1025
    Surface metal/non-metal · W. W. Clyde & Co. · MSHA ID 4201798
    Abandoned
  3. 24-1040
    Surface metal/non-metal · W.W. Clyde & Co. · MSHA ID 4202404
    Abandoned
  4. 44011
    Surface metal/non-metal · Staker Paving & Construction Company Inc · MSHA ID 4202103
    Abandoned
  5. 5-Mile Pit
    Surface metal/non-metal · Interstate Brick Company · MSHA ID 4200067
    Abandoned
  6. 76-1022
    Surface metal/non-metal · W. W. Clyde & Co. · MSHA ID 4201754
    Abandoned
  7. 9 mile Quarry
    Surface metal/non-metal · Carmel Stone Supply · MSHA ID 4202349
    Abandoned
  8. American Consolidated Mining Plant
    Facility metal/non-metal · American Consolidated Mining Company · MSHA ID 4201758
    Abandoned
  9. American Fork Pit
    Surface metal/non-metal · Warburton Sand & Gravel · MSHA ID 4201076
    Abandoned
  10. Apex #2
    Underground metal/non-metal · Sunshine Mining Company · MSHA ID 4201719
    Abandoned
  11. Barex Lindon Plant Or Barex Corp Mill
    Facility metal/non-metal · Barex Corp · MSHA ID 4201658
    Abandoned
  12. Big Buck Mine
    Surface metal/non-metal · Reay Mining · MSHA ID 4201657
    Abandoned
  13. Black Shale
    Surface metal/non-metal · Interstate Brick Company · MSHA ID 4201993
    Abandoned
  14. Burgin/Apex
    Facility metal/non-metal · Tintic Utah Metals Llc · MSHA ID 4200148
    Abandoned
  15. Cedar Valley Pit
    Surface metal/non-metal · Valley View Rock Products LLC · MSHA ID 4202638
    Abandoned
  16. Cedarstrom Sand And Gravel Pit
    Surface metal/non-metal · Cedarstrom Calcite Company · MSHA ID 4201013
    Abandoned
  17. Chief Consolidated Mines
    Underground metal/non-metal · Centennial Development Company · MSHA ID 4202114
    Abandoned
  18. Clawson Excavating, Inc
    Surface metal/non-metal · Clawson Excavating, Inc · MSHA ID 4202712
    Abandoned
  19. Clinton Mine
    Surface metal/non-metal · Interpace Corp · MSHA ID 4200064
    Abandoned
  20. Colton Pit
    Surface metal/non-metal · Le Grand Johnson Construction Company · MSHA ID 4201834
    Abandoned
  21. Colton Screening Plant & Sales
    Facility coal · Blazon Company · MSHA ID 4201728
    Abandoned
  22. Condie Mobile #1
    Surface metal/non-metal · Condie Construction Co., Inc. · MSHA ID 4202169
    Abandoned
  23. Coyote Knoll Mine
    Surface metal/non-metal · Amnor Energy Corp · MSHA ID 4202582
    Abandoned
  24. CR Portable Crushing
    Surface metal/non-metal · Cox Rock Products, Inc · MSHA ID 4202763
    Abandoned
  25. Crown Point Mine
    Underground metal/non-metal · U S Energy Corp · MSHA ID 4200761
    Abandoned
  26. Dairy Fork Pit
    Surface metal/non-metal · Dansie Enterprises · MSHA ID 4201893
    Abandoned
  27. DC Portable
    Surface metal/non-metal · Dirt Cheap LLC · MSHA ID 4202743
    Abandoned
  28. Dutchman 2
    Surface metal/non-metal · Cedarstrom Fire Clay Company · MSHA ID 4200060
    Abandoned
  29. Elberta
    Surface metal/non-metal · Wasatch Gravel and Rock, LLP · MSHA ID 4202435
    Abandoned
  30. Extec Portable 1
    Surface metal/non-metal · RN & Sons Equipment LLC · MSHA ID 4202592
    Abandoned
  31. Extec Screen
    Surface metal/non-metal · Peck Rock and Products LLC · MSHA ID 4202390
    Abandoned
  32. Fak P. U. #1
    Surface metal/non-metal · Fluor, Ames, Kraemer, LLC · MSHA ID 4202330
    Abandoned
  33. Faun
    Surface metal/non-metal · Cedarstrom Fire Clay Company · MSHA ID 4200833
    Abandoned
  34. Ferto Mine
    Facility metal/non-metal · U S Ferto Corp · MSHA ID 4201131
    Abandoned
  35. Flake Pit
    Surface metal/non-metal · W W Clyde & Company Inc · MSHA ID 4201570
    Abandoned
  36. Fruitland Rock Products LLC
    Surface metal/non-metal · Fruitland Rock Products LLC · MSHA ID 4202641
    Abandoned
  37. Geneva Pit
    Surface metal/non-metal · Intermountain Sand Company · MSHA ID 4201939
    Abandoned
  38. Glode-Yankee Mine
    Underground metal/non-metal · Knight-Roundy Mining Inc · MSHA ID 4201692
    Abandoned
  39. Gold Dome Mining And Milling Mill
    Facility metal/non-metal · Gold Dome Mining & Milling Company · MSHA ID 4201463
    Abandoned
  40. Gomex
    Surface metal/non-metal · Staker & Parson Companies · MSHA ID 4201857
    Abandoned
  41. GSC Portable #1
    Surface metal/non-metal · Green Soils Company LLC. · MSHA ID 4202771
    Abandoned
  42. H-K Portable Plant 033 Crusher
    Surface metal/non-metal · H-K Contractors Inc · MSHA ID 4201964
    Abandoned
  43. Hays Pit
    Surface metal/non-metal · Geneva Rock Products Inc · MSHA ID 4201381
    Abandoned
  44. Homanville Quarry
    Surface metal/non-metal · Kennecott Minerals Company · MSHA ID 4201523
    Abandoned
  45. Hurst Pit
    Surface metal/non-metal · Fogle Sand & Gravel Company · MSHA ID 4200977
    Abandoned
  46. Insul Chem Mill
    Facility metal/non-metal · Insul Chem Inc · MSHA ID 4201810
    Abandoned
  47. INTERMOUNTAIN SAND PIT
    Surface metal/non-metal · Intermountain Sand Company · MSHA ID 4201071
    Abandoned
  48. Iron Blossom
    Underground metal/non-metal · Sunshine Mining Company · MSHA ID 4201742
    Abandoned
  49. IRONTON
    Surface metal/non-metal · Erock Inc · MSHA ID 4202120
    Abandoned
  50. J M Sumsion Sand And Gravel Pit
    Surface metal/non-metal · J M Sumsion Sand & Gravel Company · MSHA ID 4201074
    Abandoned
  51. Jim Gay
    Surface metal/non-metal · Interstate Brick Company · MSHA ID 4200035
    Abandoned
  52. Jim Gay Pit
    Surface metal/non-metal · Entrada Industries Inc Interstate B · MSHA ID 4200335
    Abandoned
  53. Johnson Ready Mix Co Pit No 1
    Surface metal/non-metal · Johnson Ready Mix Company · MSHA ID 4201037
    Abandoned
  54. Johnson Ready Mix Co Pit No 2
    Surface metal/non-metal · Johnson Ready Mix Company · MSHA ID 4201038
    Abandoned
  55. L-7 Portable Crusher
    Surface metal/non-metal · Geneva Rock Products Inc · MSHA ID 4202304
    Abandoned
  56. Lake Point Quarry
    Surface metal/non-metal · Ames Construction, Inc. · MSHA ID 4200003
    Abandoned
  57. Lakeside Lime Quarry And Mill
    Surface metal/non-metal · Limestone Products Corp · MSHA ID 4200015
    Abandoned
  58. Lehi Mortar Sand Pit
    Surface metal/non-metal · Lehi Mortar Sand Company · MSHA ID 4201053
    Abandoned
  59. LEHI PIT
    Surface metal/non-metal · Granite Construction Company · MSHA ID 4201807
    Abandoned
  60. Lime Peak Quarry
    Surface metal/non-metal · Shaw Environmental · MSHA ID 4202382
    Abandoned
  61. Lincoln
    Surface metal/non-metal · Ophir Minerals LLC · MSHA ID 4202626
    Abandoned
  62. Lott Canyon Mine
    Surface metal/non-metal · Triple D Excavation, LLC · MSHA ID 4202724
    Abandoned
  63. Lott Canyon Mine
    Surface metal/non-metal · Mills Rock & Gravel · MSHA ID 4202733
    Abandoned
  64. M & N Development LLC
    Surface metal/non-metal · M & N Development LLC · MSHA ID 4202427
    Abandoned
  65. MVC Portable #1
    Surface metal/non-metal · MVC Const. Co. Inc. · MSHA ID 4202445
    Abandoned
  66. NEBO ROCK
    Surface metal/non-metal · Custom Crushing & Recycling Lc · MSHA ID 4202198
    Abandoned
  67. Olsen Pit
    Surface metal/non-metal · Elbert Lowdermilk Inc · MSHA ID 4201826
    Abandoned
  68. Peayo Dream Mine #2
    Surface metal/non-metal · Stone Age Rock · MSHA ID 4202378
    Abandoned
  69. Peck Clay Pits
    Surface metal/non-metal · Thomas J Peck & Sons Inc · MSHA ID 4201161
    Abandoned
  70. Pettro Pit
    Surface metal/non-metal · Vanrok, LLC · MSHA ID 4202417
    Abandoned
  71. PIT 25 JCI SCREEN PLANT
    Surface metal/non-metal · Harper Sand & Gravel Inc · MSHA ID 4202295
    Abandoned
  72. Pleasant Grove Plant
    Surface metal/non-metal · Westroc Inc · MSHA ID 4201988
    Abandoned
  73. Point Of The Mountain Pit
    Surface metal/non-metal · Thorn Construction Inc-Thorn Rock Products · MSHA ID 4201418
    Abandoned
  74. Point West Lehi
    Surface metal/non-metal · Staker & Parson Companies · MSHA ID 4202043
    Abandoned
  75. Portable #1
    Surface metal/non-metal · CMC Rock, LLC · MSHA ID 4202790
    Abandoned
  76. Portable Crusher #1
    Surface metal/non-metal · Granite Construction Company · MSHA ID 4202050
    Abandoned
  77. Portable Crusher #2
    Surface metal/non-metal · Harris Bethers Construction Company · MSHA ID 4201982
    Abandoned
  78. PORTABLE CRUSHER #2
    Surface metal/non-metal · Rocky Mountain Trucking & Equipment Company Inc · MSHA ID 4201867
    Abandoned
  79. Portable Number One
    Surface metal/non-metal · Whitaker Construction, Co. Inc. · MSHA ID 4202537
    Abandoned
  80. PORTABLE VA-1
    Surface metal/non-metal · Valley Asphalt Inc · MSHA ID 4200412
    Abandoned
  81. PORTABLE VA-4
    Surface metal/non-metal · Valley Asphalt Inc · MSHA ID 4202033
    Abandoned
  82. PORTABLE VA-6
    Surface metal/non-metal · Valley Asphalt Inc · MSHA ID 4202119
    Abandoned
  83. Poverty Point Pit
    Surface metal/non-metal · Holcim (US) Inc. · MSHA ID 4202380
    Abandoned
  84. Powell
    Surface metal/non-metal · Interstate Brick Company · MSHA ID 4200182
    Abandoned
  85. Provo Canyon Pit
    Surface metal/non-metal · Geneva Rock Products Inc · MSHA ID 4200380
    Abandoned
  86. Provo Canyon Pit
    Surface metal/non-metal · PROVO CANYON AGGREGATES AND RECYCLING, LLC · MSHA ID 4202418
    Abandoned
  87. Relief Mine
    Underground metal/non-metal · Relief Mine Company · MSHA ID 4201159
    Abandoned
  88. RELIEF MINE PIT
    Surface metal/non-metal · Sunroc Corporation · MSHA ID 4202265
    Abandoned
  89. Riverside Pit
    Surface metal/non-metal · Ron Foster Construction · MSHA ID 4202332
    Abandoned
  90. Rockwell Pit
    Surface metal/non-metal · Forward Development Group · MSHA ID 4202731
    Abandoned
  91. Rowley Pit
    Surface metal/non-metal · Utah County Road Department · MSHA ID 4201154
    Abandoned
  92. RPN Rock Products
    Surface metal/non-metal · RPN Rock Products · MSHA ID 4202450
    Abandoned
  93. Savage Bros Sand And Gravel Pit
    Surface metal/non-metal · Savage Brothers Inc · MSHA ID 4201149
    Abandoned
  94. Silver Bell Mine
    Underground metal/non-metal · Lee Mining Corp · MSHA ID 4201698
    Abandoned
  95. Smokey Joe
    Surface metal/non-metal · Interstate Brick Company · MSHA ID 4201992
    Abandoned
  96. Spring Lake Tunnel
    Underground metal/non-metal · Syndicate Oil & Mineral Company · MSHA ID 4201264
    Abandoned
  97. StoneCover Quarries
    Surface metal/non-metal · StoneCover LLC · MSHA ID 4202690
    Abandoned
  98. Thorn Incorporated Thorn Pit No 1
    Surface metal/non-metal · Thorn Construction Inc-Thorn Rock Products · MSHA ID 4200408
    Abandoned
  99. Thorn Spanish Fork Pit
    Surface metal/non-metal · Thorn Inc · MSHA ID 4201171
    Abandoned
  100. Tingeys Pit
    Surface metal/non-metal · Tingeys Enterprises Inc · MSHA ID 4201265
    Abandoned
  101. Traverse Mountain
    Surface metal/non-metal · Inland Constructors, Inc. · MSHA ID 4202370
    Abandoned
  102. Utah County Portable Crusher
    Surface metal/non-metal · Utah County Public Works · MSHA ID 4201372
    Abandoned
  103. Wasatch Minerals
    Surface metal/non-metal · Wasatch Minerals, LLC · MSHA ID 4202660
    Abandoned
  104. Water Lilly Mine
    Underground metal/non-metal · Kennecott Minerals Company · MSHA ID 4201377
    Abandoned
  105. Wood's Pit
    Surface metal/non-metal · Intermountain Excavating · MSHA ID 4202109
    Abandoned
  106. Woods Pit Or Valley Asphalt Utah County
    Surface metal/non-metal · Valley Asphalt Inc · MSHA ID 4201112
    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 1,151
Adit 412
Mine Shaft 202
Gravel Pit 96
Gravel Pit 50
Mine Dump 47
Open Pit Mine 24
Gravel/Borrow Pit - Undifferentiated 21
Quarry 19
Open Pit Mine or Quarry 15
Tailings - Pond 12
P1 Portals 10
Clay Pit 8
P1 Vertical Openings 7
Clay Pit 7
Open Pit Mine 5
Gravel/Borrow Pit - Undifferentiated 5
Quarry 4
Disturbed Surface - Pit 4
Disturbed Surface 4
Tailings - Undifferentiated 3
Borrow Pit 3
P1 Subsidence 2
Slag Pile 2
Strip Mine 1
Quarry - Pumice 1
Other counties in UtahAll 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.