Mining Incidents
Abandoned mine inventory

Abandoned mines in Elko County, Nevada

Elko County, Nevada has 7,657 mine and prospect features on USGS topographic maps published 1935–1991, including 944 mine openings (shafts, adits and air shafts) and 5,958 prospect pits; 142 of the features carry a name on the map. MSHA's register carries 123 mines in the county with status Abandoned or Abandoned and Sealed.

Every mine and prospect feature the USGS digitized from historical topographic maps covering Elko 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)
7,657
Mine openings
944
OSMRE problems unreclaimed
0
MSHA mines marked abandoned
123
142 features carry a name5,958 prospect pits239 quadrangle maps, published 1935–1991 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
    944 12.3%
  2. Prospect pits and trenches
    shallow exploration diggings that never became a mine
    5,958 77.8%
  3. Mines and surface workings
    labelled mines, open pits, strip mines, placer and hydraulic workings
    91 1.2%
  4. Quarries, gravel and borrow pits
    construction-material and industrial-mineral extraction
    623 8.1%
  5. Dumps, tailings, spoil and gob
    what mining left above ground
    41 0.5%
Named features on the maps142 named · from the USGS compilation
Name on map Feature
Ada H Mine Mine Shaft
Altitude Mine Adit
Altitude Mine Prospect Pit
Amazon Mine Prospect Pit
American Beauty Mine Adit
American Beauty Mine Mine Shaft
Arizona Mine Mine Shaft
Aura King Mine Adit
Babel Mine Mine Shaft
Battle Creek Mine Mine Shaft
Battle Creek Mines Prospect Pit
Bell Mine Adit
Black Forest Mine Open Pit Mine
Blanchard Mine Adit
Blue Bell Mine Mine Shaft
Blue Bird Mine Mine Shaft
Blue Jacket Mine Adit
Blue Jacket Mine Open Pit Mine
Bluster Mine Prospect Pit
Bootstrap Mine Open Pit Mine
Bricker Mine Adit
Bruneau Mine Adit
Bruneau Mine Open Pit Mine
Bruneau Mine Open Pit Mine
Bull Run Mine Adit
Bull Run Mine Adit
Burns Mine Adit
Burns Mine Adit
Butte 1 Mine Open Pit Mine
Butte 2 Mine Mine Shaft
California Mine Adit
California Mine Adit
Clementine Mine Adit
Cleveland Mine Mine Shaft
Cleveland Mine Open Pit Mine
Coal Canyon Mine Mine Shaft
Colvins Mine Open Pit Mine
Copper Bell Mine Mine Shaft
Cornucopia Mine Mine Shaft
Davis Tunnel Adit
Davis Tunnel Adit
Dead Cedar Mine Mine Shaft
Delano Mines Prospect Pit
Delno Mines Mine Shaft
Diamond Jim Mine Mine Shaft
Divide Mines Adit
Divide Mines Open Pit Mine
Dolmas Mine Prospect Pit
Echo Mine Mine Shaft
Edgemont Mine Adit
Edgemont Mine Adit
Elcora Mine Mine Shaft
Elko Prince Mine Adit
Esmeralda Mine Mine Shaft
Falcon Mines Adit
Ferber Mining District Prospect Pit
Fox Mine Mine Shaft
Garamendi Mine Mine Shaft
Gold Note Mine Adit
Gold Note Mine Mine
Golden Eagle Mine Mine Shaft
Golden Eagle Mine Open Pit Mine
Golden Ensign Mine Mine Shaft
Golden Ensign Mine Open Pit Mine
Golden Pipe Mine Mine Shaft
Governor Mine Prospect Pit
Grand Prize Mine Mine Shaft
Gray Eagle Mine Adit
Grey Eagle Mine Adit
Helen B Smith Mine Mine Shaft
Hice Mine Adit
Idaho-Nev Shaft Mine Shaft
Ivy Wilson Mine Mine Shaft
Jackson Mine Adit
Jackson Mines Mine Shaft
Johnson Mine Adit
Kille Mine Open Pit Mine
Lime Mountain Mine Adit
Lime Mtn Mine Adit
Link Mine Mine Shaft
Little Jewel Mine Adit
Lone Wolf Mine Adit
Mammoth Mine Adit
Marshall Mine Mine Shaft
Mc Donald Mine Open Pit Mine
Mc Knights Placer Mine Placer Mine
Mc Knights Placer Mine Placer Mine
Meddota Mine Mine Shaft
Midas Mine Mine Shaft
Miners Gold Mine Adit
Mint Mine Mine Shaft
Mitchell Mine Adit
Mitchell Mine Adit
Monarch Mine Adit
Navajo Mine Mine Shaft
Nevada Mine Adit
Nevada Mine Adit
Norman Mines Prospect Pit
Old Timers Mine Mine Shaft
Pavlok Mine Adit
Phalan Keegan Mine Mine Shaft
Polar Star Mine Mine Shaft
Prunty Mine Adit
Pruntys Mine Open Pit Mine
Queen Mine Mine Shaft
Queen Mine Mine Shaft
Red Bird Mine Adit
Rex Mine Adit
Rex Mine Adit
Rex Mine Prospect Pit
Riddle Mine Adit
Rimrock Mine Adit
Rio Tinto Mine Mine
Rio Tinto Mine Open Pit Mine
Rio Tinto Mine Open Pit Mine
Rio Tinto Mine Tailings - Undifferentiated area
Rio Tinto Mine Tailings - Undifferentiated area
Rio Tinto Mine Tailings - Undifferentiated area
Rip Van Winkle Mine Mine Shaft
Rose O'Connel Mine Adit
Rossi Mine Open Pit Mine
Sheep Corral Mine Open Pit Mine
Silkworm Mine Adit
Silver Banner Mine Open Pit Mine
Silver Butte Mine Mine Shaft
Silver Cloud Mine Open Pit Mine
Silver King Mine Adit
Silver Star Mine Adit
Slattery Mine Adit
Slatterys Mine Open Pit Mine
St Elmo Mine Adit
Standing Elk Mine Prospect Pit
Star Mine Adit
Success Mine Prospect Pit
Sylvania Mine Adit
Tripoli Mine Mine Shaft
Turo Mine Mine Shaft
Velvet Mine Open Pit Mine
Victoria Mine Adit
Vivian Decline Adit
Vulcan Mine Adit
Wildhorse Mine Adit

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.

MSHA-registered mines with status Abandoned123 on register
  1. 033 Crusher H K Portable Plant
    Surface metal/non-metal · H-K Contractors Inc · MSHA ID 2601975
    Abandoned
  2. 4 M
    Underground metal/non-metal · 4 M · MSHA ID 2601936
    Abandoned
  3. 8X20 3-DECK SCREEN PLANT
    Surface metal/non-metal · CANYON CONSTRUCTION CO. · MSHA ID 2602763
    Abandoned
  4. AMES PORTABLE UNIT #4
    Surface metal/non-metal · Ames Construction Inc · MSHA ID 2602390
    Abandoned
  5. Amy Mine
    Underground metal/non-metal · Stocks Trucking Company LLC · MSHA ID 2602666
    Abandoned
  6. Azletts Mill
    Facility metal/non-metal · Dale Aslett Sand & Gravel Inc · MSHA ID 2601424
    Abandoned
  7. BARMAC IMPORT CRUSHER
    Surface metal/non-metal · Canyon Construction Company · MSHA ID 2602312
    Abandoned
  8. Battle Creek Tungsten Mine
    Underground metal/non-metal · R & A Minerals · MSHA ID 2601688
    Abandoned
  9. Big Jim
    Surface metal/non-metal · Barite Mining Inc · MSHA ID 2601695
    Abandoned
  10. Big Ledge Mine
    Surface metal/non-metal · Circle A Construction Mining & Milling · MSHA ID 2601895
    Abandoned
  11. Big Ledge Mine
    Surface metal/non-metal · National Oilwell Varco, LP · MSHA ID 2602603
    Abandoned
  12. BIG SPRINGS
    Surface metal/non-metal · Anglogold (Jerritt Canyon) Corp · MSHA ID 2602003
    Abandoned
  13. Bmex Pavlak Mill
    Facility metal/non-metal · Bmex Corp · MSHA ID 2601939
    Abandoned
  14. Bourne Creek Mine
    Surface metal/non-metal · Bourne Creek Mining Company · MSHA ID 2601753
    Abandoned
  15. Brian Millsite
    Facility metal/non-metal · Barite Mining Inc · MSHA ID 2601704
    Abandoned
  16. Bullion Monarch Mine
    Surface metal/non-metal · Universal Gas (Montana) Inc · MSHA ID 2601343
    Abandoned
  17. Bullion Monarch Mine Contract
    Surface metal/non-metal · Lloyd C Evans Construction Company · MSHA ID 2601569
    Abandoned
  18. CANICA VSI CRUSHER #1371
    Surface metal/non-metal · BJ Rees's Enterprise · MSHA ID 2602504
    Abandoned
  19. CARLIN UNDERGROUND
    Underground metal/non-metal · Small Mine Development · MSHA ID 2602238
    Abandoned
  20. Chieftain Powerscreen
    Surface metal/non-metal · Canyon Construction Co · MSHA ID 2602641
    Abandoned
  21. City Of Elko Pit
    Surface metal/non-metal · Robert L Helms Construction & Development Co · MSHA ID 2601652
    Abandoned
  22. Cleaveland Gold Note & 86
    Surface metal/non-metal · Richfield Resources Inc · MSHA ID 2601590
    Abandoned
  23. Concrete Prods Co Portable Crush
    Surface metal/non-metal · Concrete Products Co-Div/Gibbons & Reed Company · MSHA ID 2601844
    Abandoned
  24. Convention Jarbidge
    Underground metal/non-metal · Little Devil Mining Corp · MSHA ID 2601937
    Abandoned
  25. Cortez Joint Venture
    Facility metal/non-metal · Global Bird Management, Inc. · MSHA ID 2602545
    Abandoned
  26. Country River Pit
    Surface metal/non-metal · San Roc Inc · MSHA ID 2601827
    Abandoned
  27. Crusher 1
    Surface metal/non-metal · Acha Construction LLC · MSHA ID 2602780
    Abandoned
  28. D G & S Incorporated
    Surface metal/non-metal · D G & S Inc · MSHA ID 2601958
    Abandoned
  29. DAVIS PIT
    Surface metal/non-metal · Davis Equipment Company-Div/Ruby Mtn Freight · MSHA ID 2602384
    Abandoned
  30. DEE NORTH U/G PROJECT
    Underground metal/non-metal · Small Mine Development · MSHA ID 2602382
    Abandoned
  31. Delno Mine
    Underground metal/non-metal · Panther Mining · MSHA ID 2601444
    Abandoned
  32. Diamond Jim
    Underground metal/non-metal · Gold Creek Silver Mines Inc · MSHA ID 2601565
    Abandoned
  33. Dry Creek Mill Site
    Surface metal/non-metal · National Oilwell Varco, LP · MSHA ID 2602646
    Abandoned
  34. Easy Miner
    Surface metal/non-metal · A W Arnold & Associates Inc · MSHA ID 2601667
    Abandoned
  35. Elburz Pit
    Surface metal/non-metal · J/P Associated · MSHA ID 2601626
    Abandoned
  36. Elko City Pit
    Surface metal/non-metal · Ron Lewis Construction Company · MSHA ID 2600832
    Abandoned
  37. Elko Pit
    Surface metal/non-metal · Elko Sand & Gravel · MSHA ID 2602163
    Abandoned
  38. Emigrant Mill
    Facility metal/non-metal · Box Cedar Mining Inc · MSHA ID 2601534
    Abandoned
  39. Esmeralda Mine Or Esmeralda
    Underground metal/non-metal · K M Mining & Development Company · MSHA ID 2601633
    Abandoned
  40. FABTEC 54-INCH CONE AND 6X20 SCREEN
    Surface metal/non-metal · CANYON CONSTRUCTION CO. · MSHA ID 2602764
    Abandoned
  41. FABTEC 54-INCH CONE WITH 6X20 SCREEN
    Surface metal/non-metal · Canyon Construction Co. · MSHA ID 2602760
    Abandoned
  42. FabTec Agg Plant
    Surface metal/non-metal · Canyon Construction Co · MSHA ID 2602644
    Abandoned
  43. Falcon
    Underground metal/non-metal · Agau Ventures Ltd · MSHA ID 2601628
    Abandoned
  44. Fish Creek
    Surface metal/non-metal · Barite Mining Inc · MSHA ID 2601696
    Abandoned
  45. Fraser Pit
    Surface metal/non-metal · WMC Company Inc · MSHA ID 2602308
    Abandoned
  46. G & R Big Springs
    Surface metal/non-metal · Gibbons Companies · MSHA ID 2602198
    Abandoned
  47. Haystack Pit
    Surface metal/non-metal · S.M.D. Development LLC · MSHA ID 2602768
    Abandoned
  48. Heavy Spar
    Surface metal/non-metal · Barite Mining Inc · MSHA ID 2601673
    Abandoned
  49. HOLLISTER MINE
    Surface metal/non-metal · Newmont Exploration Limited · MSHA ID 2602086
    Abandoned
  50. Hunch Mine
    Surface metal/non-metal · Chromalloy Mining & Milling · MSHA ID 2601761
    Abandoned
  51. Jackpot Pit
    Surface metal/non-metal · Peter Kiewit Sons' Company · MSHA ID 2601465
    Abandoned
  52. Jones Flat Pit
    Surface metal/non-metal · Shoshone Paiute Tribes · MSHA ID 2602808
    Abandoned
  53. Jones Pit
    Surface metal/non-metal · Ruby Dome Inc · MSHA ID 2602055
    Abandoned
  54. Jones Property
    Surface metal/non-metal · Peabody Calada Inc · MSHA ID 2601637
    Abandoned
  55. Jungle Area
    Surface metal/non-metal · Chromalloy Mining & Milling · MSHA ID 2601098
    Abandoned
  56. KENSLEY MOUNTAIN PROJECT
    Surface metal/non-metal · Alta Gold Company · MSHA ID 2602261
    Abandoned
  57. KOLBERG PIONEER 3144 PORTABLE JAW CRUSHE
    Surface metal/non-metal · CANYON CONSTRUCTION CO. · MSHA ID 2602811
    Abandoned
  58. Kolberg Pioneer CS3055 Port Jaw Crusher
    Surface metal/non-metal · Canyon Construction Co. · MSHA ID 2602826
    Abandoned
  59. KUE-KEN JAW CRUSHER
    Surface metal/non-metal · Canyon Construction Company · MSHA ID 2602311
    Abandoned
  60. Lakes Millsite
    Facility metal/non-metal · Eisenman Chemical Company · MSHA ID 2601430
    Abandoned
  61. Lakes Mine
    Surface metal/non-metal · Barite Mining Inc · MSHA ID 2600959
    Abandoned
  62. Ledcor Jaw Crusher Premiertrax 400x
    Surface metal/non-metal · Ledcor CMI Inc · MSHA ID 2602900
    Abandoned
  63. Longshot
    Surface metal/non-metal · Petro-Chem Inc · MSHA ID 2601686
    Abandoned
  64. Loomis Creek Mine
    Surface metal/non-metal · Chromalloy Mining & Milling · MSHA ID 2601760
    Abandoned
  65. Mc Kinley Pit
    Surface metal/non-metal · Robert L Helms Construction & Development Co · MSHA ID 2601109
    Abandoned
  66. Midas Mine
    Underground metal/non-metal · Klondex Midas Operations, Inc. · MSHA ID 2602314
    Abandoned
  67. Mountain City Mill
    Facility metal/non-metal · Oxbow Tungsten Mines Inc · MSHA ID 2601353
    Abandoned
  68. Mountain City Mill
    Facility metal/non-metal · Banner Resources Corp · MSHA ID 2601795
    Abandoned
  69. MUNGERS BACKHOE GRAVEL PIT
    Surface metal/non-metal · Mungers Backhoe Service · MSHA ID 2602436
    Abandoned
  70. Murray Mine
    Underground metal/non-metal · Veris Gold U.S.A., Inc. · MSHA ID 2602211
    Abandoned
  71. NAD Crusher
    Surface metal/non-metal · N.A. Degerstrom · MSHA ID 2602749
    Abandoned
  72. NAD Impactor Crusher
    Surface metal/non-metal · N. A. Degerstrom, Inc. · MSHA ID 2602725
    Abandoned
  73. Nevada Barite Plant
    Surface metal/non-metal · Chromalloy Mining & Minerals Inc · MSHA ID 2601473
    Abandoned
  74. Nevada Milling Company Mill
    Facility metal/non-metal · Nevada Milling Company · MSHA ID 2601724
    Abandoned
  75. Nevada Portable #2
    Surface metal/non-metal · Granite Construction Company · MSHA ID 2602871
    Abandoned
  76. Normal Mine
    Surface metal/non-metal · Normal Mining Company · MSHA ID 2601863
    Abandoned
  77. Pardo Pit
    Surface metal/non-metal · Harney Rock & Paving Company · MSHA ID 2601818
    Abandoned
  78. Patsy Ann Claims
    Surface metal/non-metal · Unichem Minerals Inc · MSHA ID 2601672
    Abandoned
  79. Patsy Ann Mine
    Surface metal/non-metal · Mc Neely Mining Contractors Inc · MSHA ID 2601509
    Abandoned
  80. Pit No El 28-1
    Surface metal/non-metal · Peter Kiewit Sons' Company · MSHA ID 2601455
    Abandoned
  81. Portable 391
    Surface metal/non-metal · Elko Sand & Gravel · MSHA ID 2602721
    Abandoned
  82. Portable Crusher 2300484
    Surface metal/non-metal · G P Construction Company Inc · MSHA ID 2601999
    Abandoned
  83. Portable Crusher Lj-264
    Surface metal/non-metal · G P Construction Company Inc · MSHA ID 2601462
    Abandoned
  84. Rain Mine
    Surface metal/non-metal · Lost Dutchman Construction Inc · MSHA ID 2602217
    Abandoned
  85. RAIN UNDERGROUND
    Underground metal/non-metal · Small Mine Development · MSHA ID 2602237
    Abandoned
  86. Randolph Mine And Mill
    Surface metal/non-metal · Goldcap Enterprises Inc · MSHA ID 2601468
    Abandoned
  87. Rem Crusher #1
    Surface metal/non-metal · Remington Construction · MSHA ID 2602814
    Abandoned
  88. Ren Mine
    Surface metal/non-metal · W E S Construction Company Inc · MSHA ID 2602209
    Abandoned
  89. Riddle
    Underground metal/non-metal · San Rafael Exploration Company · MSHA ID 2601702
    Abandoned
  90. Rossi Mine
    Surface metal/non-metal · N A Degerstrom Inc · MSHA ID 2600397
    Abandoned
  91. RYNDON COMMUNITY PIT
    Surface metal/non-metal · Canyon Construction Company · MSHA ID 2602468
    Abandoned
  92. Saval 4
    Underground metal/non-metal · Jerritt Canyon Gold LLC · MSHA ID 2602742
    Abandoned
  93. Saval II
    Underground metal/non-metal · Jerritt Canyon Gold LLC · MSHA ID 2602875
    Abandoned
  94. Sharp Pit And Mill
    Surface metal/non-metal · Sharp Concrete Company · MSHA ID 2600453
    Abandoned
  95. Simplicity Double Deck Screen
    Surface metal/non-metal · Canyon Construction Co · MSHA ID 2602637
    Abandoned
  96. Snoose Creek Mine
    Surface metal/non-metal · Chromalloy Mining & Milling · MSHA ID 2601759
    Abandoned
  97. South Fork Gravel
    Surface metal/non-metal · Acha Construction · MSHA ID 2602736
    Abandoned
  98. South Wells
    Surface metal/non-metal · Ludwig Mining Company · MSHA ID 2601600
    Abandoned
  99. SPRING CREEK SAND & GRAVEL
    Surface metal/non-metal · P Squared Enterprise, Inc. · MSHA ID 2602427
    Abandoned
  100. St Elmo
    Underground metal/non-metal · Tex-Tah · MSHA ID 2601571
    Abandoned
  101. St Elmo Mine
    Underground metal/non-metal · St Elmo Mining Inc · MSHA ID 2602212
    Abandoned
  102. Star Valley
    Surface metal/non-metal · Elko Sand & Gravel · MSHA ID 2602842
    Abandoned
  103. Starvation Canyon
    Underground metal/non-metal · Jerritt Canyon Gold, LLC · MSHA ID 2602634
    Abandoned
  104. State Highway District No3
    Surface metal/non-metal · Nevada State Highway Department · MSHA ID 2600768
    Abandoned
  105. Steer Offices
    Underground metal/non-metal · Jerritt Canyon Gold LLC · MSHA ID 2602370
    Abandoned
  106. Stormy Creek Mill
    Facility metal/non-metal · Old Soldier Minerals · MSHA ID 2601829
    Abandoned
  107. Stormy Creek Mine
    Surface metal/non-metal · Old Soldier Minerals · MSHA ID 2601592
    Abandoned
  108. SYMONS CONE CRUSHER
    Surface metal/non-metal · Canyon Construction Company · MSHA ID 2602313
    Abandoned
  109. Tennessee Mine
    Surface metal/non-metal · Tennessee Tungsten Inc · MSHA ID 2600328
    Abandoned
  110. Tuscarora
    Surface metal/non-metal · Remtech L L C · MSHA ID 2601561
    Abandoned
  111. Unichem Minerals Jig Plant
    Facility metal/non-metal · Unichem Minerals Inc · MSHA ID 2601792
    Abandoned
  112. Vega Portable Crusher #3
    Surface metal/non-metal · Vega Construction & Trucking Co. · MSHA ID 2602500
    Abandoned
  113. Vivian Tunnel
    Underground metal/non-metal · Pischel Mining Company Inc · MSHA ID 2601498
    Abandoned
  114. VT Crusher
    Surface metal/non-metal · VT Construction, Inc · MSHA ID 2602723
    Abandoned
  115. Wells City Pit
    Surface metal/non-metal · Tibbals Construction Inc · MSHA ID 2601475
    Abandoned
  116. Wells Pit
    Surface metal/non-metal · Jack B Parson Construction Company · MSHA ID 2601668
    Abandoned
  117. Wells Tungsten Mill
    Facility metal/non-metal · Wells Tungsten · MSHA ID 2600985
    Abandoned
  118. Wells Tungsten Mine
    Underground metal/non-metal · Brough Livestock LLC · MSHA ID 2600984
    Abandoned
  119. WENDOVER EQ S/N PID 0006LE74030024
    Surface metal/non-metal · MODERN CONCRETE · MSHA ID 2602645
    Abandoned
  120. West Generator
    Underground metal/non-metal · Jerritt Canyon Gold LLC · MSHA ID 2602885
    Abandoned
  121. Willie
    Surface metal/non-metal · Ludwig Mining Company · MSHA ID 2601599
    Abandoned
  122. Wood Gulch
    Surface metal/non-metal · Homestake Mining Company · MSHA ID 2602068
    Abandoned
  123. YANKEEE PIT
    Surface metal/non-metal · D H Blattner & Sons Inc · MSHA ID 2602214
    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 5,958
Adit 544
Mine Shaft 400
Gravel Pit 207
Borrow Pit 183
Gravel Pit 73
Open Pit Mine 58
Borrow Pit 46
Quarry 44
Sand Pit 32
Mine Dump 30
Gravel/Borrow Pit - Undifferentiated 27
Open Pit Mine 21
Sand Pit 8
Tailings - Undifferentiated 7
Strip Mine 4
Tailings - Pond 3
Open Pit Mine or Quarry 2
Mine 2
Quarry 2
Placer Mine 2
Open Pit Mine or Quarry 1
Tailings - Dredge 1
Quarry - Limestone 1
Disturbed Surface - Pit 1
Other counties in NevadaAll 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.