Abandoned mines in Knox County, Kentucky
Knox County, Kentucky has 639 mine and prospect features on USGS topographic maps published 1952–1979, including 370 mine openings (shafts, adits and air shafts). OSMRE's abandoned mine land inventory lists 33 problems in the county, 21 of them not yet reclaimed. MSHA's register carries 757 mines in the county with status Abandoned or Abandoned and Sealed.
Every mine and prospect feature the USGS digitized from historical topographic maps covering Knox 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)
- 639
- Mine openings
- 370
- OSMRE problems unreclaimed
- 21
- MSHA mines marked abandoned
- 757
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371 55.2%Mine openingsshafts, adits, air shafts, portals and vertical openings: the ways into underground workings
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269 40.0%Mines and surface workingslabelled mines, open pits, strip mines, placer and hydraulic workings
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9 1.3%Dumps, tailings, spoil and gobwhat mining left above ground
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23 3.4%Other reclamation problemshighwalls, subsidence, polluted or clogged water, fires, slides and gases in OSMRE's inventory
| Problem area | Problem | Status |
|---|---|---|
| Billy Helton | P2 Dangerous Piles & Embankments | In Reclamation |
| Billy Helton | P2 Dangerous Slides | In Reclamation |
| Chester Hammons | P2 Dangerous Impoundments | Reclamation Pending |
| Demps Hollow Slide | P2 Clogged Stream Lands | Reclamation Completed |
| Donnie Carnes Slides | P1 Dangerous Slides | Reclamation Completed |
| Ernest Wilson Mine Openings | P2 Portals | Reclamation Pending |
| Gregory Branch Strip | P3 Bench | Reclamation Pending |
| Gregory Branch Strip | P3 Spoil Area | Reclamation Pending |
| Hogpen Hollow Slides | P2 Clogged Stream Lands | Reclamation Pending |
| Liberty Church Road Water Supply | P2 Polluted Water: Human Consumption | Reclamation Completed |
| Marie Callebs | P2 Clogged Stream Lands | Reclamation Pending |
| Marie Callebs | P3 Spoil Area | Reclamation Pending |
| Mud Lick Mine | P3 Bench | Reclamation Completed |
| Mud Lick Mine | P3 Other | Reclamation Pending |
| Mud Lick Mine | P3 Spoil Area | Reclamation Completed |
| Poplar Br./ky Blue | P3 Bench | Reclamation Pending |
| Poplar Br./ky Blue | P3 Spoil Area | Reclamation Pending |
| Possum Hollow Slide | P2 Dangerous Slides | Reclamation Pending |
| Pre 87 | P1 Dangerous Piles & Embankments | Reclamation Completed |
| Pre 87 | P2 Dangerous Piles & Embankments | Reclamation Completed |
| Prewitt & Bennett | P2 Dangerous Highwalls | Reclamation Pending |
| Prewitt & Bennett | P2 Dangerous Impoundments | Reclamation Pending |
| Prewitt & Bennett | P3 Spoil Area | Reclamation Pending |
| Puncheon/evans Br. Slide | P3 Bench | Reclamation Pending |
| Puncheon/evans Br. Slide | P3 Spoil Area | Reclamation Pending |
| Roark Slides | P1 Clogged Streams | Reclamation Completed |
| Roark Slides | P1 Dangerous Slides | Reclamation Pending |
| Silver Diamond Slide | P1 Dangerous Slides | Reclamation Completed |
| Southeast Training Center AMLER Pro | P3 Other | Reclamation Pending |
| Southwestern Knox Co W.s. | P2 Polluted Water: Human Consumption | Reclamation Pending |
| Up Lynn Camp Cr Wtr | P2 Polluted Water: Human Consumption | Reclamation Completed |
| Wheeler Mines | P2 Clogged Stream Lands | Reclamation Completed |
| Wheeler Mines | P2 Dangerous Slides | 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.
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#1Abandoned and Sealed 1982-04-12Underground coal · R A C Mining Corp · MSHA ID 1511893
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#1Abandoned 1983-03-22Surface coal · West Knox Mining Inc · MSHA ID 1513305
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#1Abandoned and Sealed 1991-11-04Underground coal · Big Man Coal Company Inc · MSHA ID 1514194
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#1Abandoned and Sealed 1989-05-22Underground coal · G & P Contractors Inc · MSHA ID 1515125
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#1Abandoned and Sealed 1985-07-10Underground coal · 4-G Coal Company · MSHA ID 1515143
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#1Abandoned and Sealed 1987-12-18Underground coal · Four L Coal Company · MSHA ID 1515197
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#1Abandoned and Sealed 1988-10-24Underground coal · Raider Mining Company · MSHA ID 1515347
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#1Abandoned and Sealed 1991-08-16Underground coal · Dan'S Coal Company · MSHA ID 1515432
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#1Abandoned and Sealed 1987-05-20Underground coal · N & S Coal Inc · MSHA ID 1515577
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#1Abandoned and Sealed 1992-09-22Underground coal · Abraham Coal Company · MSHA ID 1515680
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#1Abandoned and Sealed 1986-10-07Underground coal · New Beginning Coal Company · MSHA ID 1515743
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#1Abandoned and Sealed 1991-07-29Underground coal · Swan Pond Coal Company · MSHA ID 1515805
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#1Abandoned and Sealed 1990-08-10Underground coal · G & M Coal Company · MSHA ID 1515949
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#1Abandoned and Sealed 1991-04-02Underground coal · Tram Mining · MSHA ID 1515988
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#1Abandoned and Sealed 1994-03-31Underground coal · Shadow Coal Company · MSHA ID 1516052
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#1Abandoned and Sealed 1994-02-23Underground coal · Misty Mountain Mining Inc · MSHA ID 1516210
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#1Abandoned and Sealed 1991-05-15Underground coal · Fantasia Mining Company · MSHA ID 1516331
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#1Abandoned and Sealed 1989-11-02Underground coal · S & S Contracting · MSHA ID 1516354
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#1Abandoned and Sealed 1989-05-17Surface coal · Double M Coal Company Inc · MSHA ID 1516400
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#1Abandoned 2002-10-30Underground coal · Duke Coal Inc · MSHA ID 1516600
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#1Abandoned and Sealed 1993-03-31Underground coal · Blue Shale Mining Company · MSHA ID 1516712
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#1Abandoned and Sealed 1993-07-12Underground coal · Mountain Enterprizes · MSHA ID 1516713
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#1Abandoned and Sealed 1992-04-14Underground coal · Brownhorse Mining · MSHA ID 1516719
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#1Abandoned and Sealed 1990-09-04Underground coal · Mustang Fuels Corp · MSHA ID 1516901
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#1Abandoned and Sealed 1992-04-14Underground coal · Headache Coal Company Inc · MSHA ID 1516938
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#1Abandoned and Sealed 1992-04-03Underground coal · Mallie Coal Company Inc · MSHA ID 1517217
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#1Abandoned and Sealed 1995-11-22Underground coal · Tug Coal Company Inc · MSHA ID 1517269
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#1Abandoned 1992-08-26Surface coal · Budrow Coal Company Inc · MSHA ID 1517286
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#1Abandoned 1992-09-16Underground coal · Headache Coal Company Inc · MSHA ID 1517300
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#1Abandoned 2012-02-07Surface coal · ACR Coal, LLC · MSHA ID 1519634
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#1Abandoned 2023-10-03Surface coal · C.W. Mining - Contractor LLC · MSHA ID 1519853
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#1 Auger KnoxAbandoned 2003-01-31Surface coal · Goldens Creek Enterprises Inc · MSHA ID 1516814
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#1 MineAbandoned 1980-06-09Underground coal · Moores Creek Coal Company · MSHA ID 1504001
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#1 MineAbandoned and Sealed 1985-09-09Underground coal · G & L Coal Company · MSHA ID 1515233
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#1 MineAbandoned and Sealed 1987-12-14Surface coal · Black Beauty Coal Company · MSHA ID 1516037
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#1 MineAbandoned and Sealed 1987-09-01Underground coal · Quits Coal Company · MSHA ID 1516087
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#1 MineAbandoned and Sealed 1987-10-19Underground coal · Walycoal Coal Company · MSHA ID 1516128
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#1 MineAbandoned 1987-12-01Surface coal · David Hoskins Coal Company · MSHA ID 1516137
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#1 MineAbandoned and Sealed 1992-10-06Underground coal · Dorco Mining Inc · MSHA ID 1516943
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#1 StripAbandoned 1984-10-10Surface coal · P P Coal Company · MSHA ID 1514377
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#1 StripAbandoned 1984-10-10Surface coal · F M Coal Company · MSHA ID 1514378
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#1 StripAbandoned 1991-10-31Surface coal · Silver Creek Mining Inc · MSHA ID 1516259
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#1 Strip & AugerAbandoned 1995-09-14Surface coal · Phillips & Jordan Inc · MSHA ID 1517604
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#1 Strip MineAbandoned 2003-01-31Surface coal · Jamieson Construction Company Inc · MSHA ID 1517728
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#1 SurfaceAbandoned 1980-06-11Surface coal · Clyde Coal Company Inc · MSHA ID 1511860
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#1 SurfaceAbandoned 1989-12-21Surface coal · B R C Coal Company Inc · MSHA ID 1514332
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#1 SurfaceAbandoned 1986-01-16Surface coal · Farmer Coal · MSHA ID 1515500
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#1 SurfaceAbandoned 1987-08-17Surface coal · Willie B Mills Coal Company · MSHA ID 1516002
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#1 SurfaceAbandoned and Sealed 1988-03-31Surface coal · Jordon Coal Company · MSHA ID 1516141
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#1 SurfaceAbandoned 2006-03-10Surface coal · Buried Sunshine Transport Inc · MSHA ID 1518812
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#10Abandoned and Sealed 1999-04-15Underground coal · Calvary Coal Company Inc · MSHA ID 1513784
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#10Abandoned and Sealed 1992-01-24Underground coal · Steel Hollow Mining Inc · MSHA ID 1516100
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#14Abandoned and Sealed 1990-05-15Underground coal · K & M Coal Company Inc · MSHA ID 1514826
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#16Abandoned 2002-10-30Underground coal · K & M Coal Company Inc · MSHA ID 1517453
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#18Abandoned and Sealed 1998-07-02Underground coal · K & M Coal Company Inc · MSHA ID 1517823
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#2Abandoned and Sealed 1995-07-31Underground coal · Birdeye Coal Company Inc · MSHA ID 1514577
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#2Abandoned and Sealed 1989-11-13Underground coal · Whitley Gap Mining Inc · MSHA ID 1515484
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#2Abandoned and Sealed 1987-09-03Underground coal · J R Coal Company · MSHA ID 1515797
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#2Abandoned and Sealed 1992-04-21Underground coal · Big Man Coal Company Inc · MSHA ID 1516396
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#2Abandoned and Sealed 1992-01-21Underground coal · Serendipity Mining Inc · MSHA ID 1516838
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#2Abandoned and Sealed 1990-09-04Underground coal · Mustang Fuels Corp · MSHA ID 1516902
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#2 MineAbandoned and Sealed 1988-03-31Underground coal · Phipps Mining Company · MSHA ID 1516145
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#2 Strip MineAbandoned 2006-11-30Surface coal · Jamieson Construction Company · MSHA ID 1518704
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#3Abandoned and Sealed 1994-05-18Underground coal · Brownhorse Mining · MSHA ID 1515517
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#3Abandoned and Sealed 1995-01-01Underground coal · Mallie Coal Company Inc · MSHA ID 1517436
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#3 MineAbandoned and Sealed 1994-05-02Underground coal · Serendipity Mining Inc · MSHA ID 1517317
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#4Abandoned and Sealed 1988-04-28Underground coal · C Y Smith Inc · MSHA ID 1515720
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#4Abandoned and Sealed 1991-07-11Underground coal · 4-G Coal Company · MSHA ID 1516899
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#4 MineAbandoned and Sealed 1999-03-24Underground coal · Birdeye Coal Company Inc · MSHA ID 1517676
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#5Abandoned and Sealed 1993-07-20Underground coal · C & H Mining · MSHA ID 1514028
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#5Abandoned and Sealed 1995-12-01Underground coal · Birdeye Coal Company Inc · MSHA ID 1517255
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#5Abandoned and Sealed 2012-01-31Underground coal · Mallie Coal Company Inc · MSHA ID 1517314
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#5 AugerAbandoned 1998-08-03Surface coal · Trosper Mining Inc · MSHA ID 1518027
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010 Salem 1500 BAbandoned 2015-05-26Surface coal · Jean Coal Company LLC · MSHA ID 1518796
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459 JobAbandoned 2010-12-16Surface coal · Alden Resources LLC · MSHA ID 1519338
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459 Mine #19Abandoned 2012-04-23Surface coal · Alden Resources LLC · MSHA ID 1519388
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AHM TippleAbandoned 2023-10-03Facility coal · American Highwall Mining, LLC · MSHA ID 1511319
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Alden Resources, LLC #6Abandoned 2017-09-25Underground coal · Alden Resources, LLC · MSHA ID 1519486
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Alex Creek No 1 MineAbandoned 1986-08-21Surface coal · D & M Coal Company · MSHA ID 1514129
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Amswiss No 1 MineAbandoned 1985-03-12Surface coal · Coal Resources Ltd · MSHA ID 1513129
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Arkle CrossingAbandoned 1982-08-02Surface coal · London Coal Company · MSHA ID 1513419
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Arkle CrossingAbandoned 1985-10-21Surface coal · John Evans Excavating · MSHA ID 1513588
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Arkle No 1Abandoned 1984-07-12Surface coal · Hutton Coal Company · MSHA ID 1514111
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Artemus Strip No 1Abandoned and Sealed 1982-11-17Surface coal · Providence Mining & Management · MSHA ID 1513145
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Artemus TippleAbandoned 1991-09-19Facility coal · Nally & Hamilton Enterprises Inc · MSHA ID 1505315
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Auger Mine #1Abandoned 1981-01-21Surface coal · Bargo & Son · MSHA ID 1512150
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B & E #1Abandoned and Sealed 1985-02-08Underground coal · B & E Coal Company · MSHA ID 1513400
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B J #1Abandoned and Sealed 1981-09-17Underground coal · B J Coal Company · MSHA ID 1512756
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Bain Branch #1Abandoned 2010-11-09Surface coal · Alden Resources LLC · MSHA ID 1519442
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Barbourville Prep PlantAbandoned 1994-09-29Facility coal · Richland Coal Company · MSHA ID 1504565
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Bertha TippleAbandoned 1981-08-20Facility coal · Pinemark Inc · MSHA ID 1513038
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Bob Bray MountainAbandoned 2007-08-16Surface coal · Wash Ridge Coal Co. · MSHA ID 1519001
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Bob Bray Mountain MineAbandoned 2003-02-27Surface coal · Csb Ii Inc · MSHA ID 1518395
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Borrow PitAbandoned 1981-09-17Surface coal · London Bridge Company Inc · MSHA ID 1512312
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Brushy MountainAbandoned 2012-03-26Surface coal · Nally & Hamilton Enterprises, Inc. · MSHA ID 1519201
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Brushy Mountain #2Abandoned and Sealed 1991-03-04Surface coal · Brushy Mountain Coal Company Inc · MSHA ID 1516175
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Bryants Store MineAbandoned 2020-11-10Surface coal · Alden Resources LLC · MSHA ID 1519864
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Brydet Auger #21Abandoned 2014-01-08Surface coal · Mountainside Coal Company Inc · MSHA ID 4003238
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Bull Creek Surface #1Abandoned and Sealed 1987-02-10Surface coal · Cumberland Processing Corp · MSHA ID 1515911
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C R S Energy #7Abandoned and Sealed 1987-06-15Surface coal · Bradley Equipment Company Inc · MSHA ID 1515370
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C Y Smith #8Abandoned and Sealed 1988-01-15Underground coal · C Y Smith Inc · MSHA ID 1515880
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Canfield #1Abandoned and Sealed 1992-09-09Underground coal · Canfield Energy Inc · MSHA ID 1514763
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Canfield #2Abandoned and Sealed 1995-04-10Underground coal · Canfield Energy Inc · MSHA ID 1513873
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Canfield #4Abandoned and Sealed 1999-08-02Underground coal · Canfield Energy Inc · MSHA ID 1517716
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Catron Branch Mine #1Abandoned 2012-12-20Surface coal · Alden Resources LLC · MSHA ID 1519245
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Catron No 1 MineAbandoned 1982-07-13Surface coal · Compliance Coal Company Inc · MSHA ID 1513184
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Charcoal No 1Abandoned and Sealed 1988-12-05Underground coal · Lakeshore Equipment Company Inc · MSHA ID 1516250
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CHM -102Abandoned 2023-08-18Surface coal · Contract Highwall Mining LLC · MSHA ID 1518730
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Christian No 1Abandoned and Sealed 1988-11-09Underground coal · Christian Energies Inc · MSHA ID 1515763
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Clark StripAbandoned 1977-08-15Surface coal · Clarks Excavating & Black Topping Inc · MSHA ID 1508988
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Clay Co MiningAbandoned 1985-10-21Surface coal · Sue Ann Coal Company Inc · MSHA ID 1515198
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Concord No 1 TippleAbandoned 1984-05-18Facility coal · Concord Coal Processing Company Inc · MSHA ID 1514193
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Corbin Paving CorporationAbandoned 1981-08-26Facility coal · Corbin Paving Corp · MSHA ID 1511570
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County Road ProjectAbandoned 1985-04-12Surface coal · Sugartree Corp · MSHA ID 1514232
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Davis Bend #1Abandoned 2005-03-01Surface coal · Davis Bend Coal Co. LLC · MSHA ID 1518762
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Davis BranchAbandoned 2006-10-12Underground coal · Jellico Enterprise, LLC · MSHA ID 1518560
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Dewitt JobAbandoned 2007-08-15Surface coal · Whymore Coal Company Inc · MSHA ID 1517967
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Dusty Fork MineAbandoned 2007-10-29Surface coal · F & G Resourses LLC · MSHA ID 1518348
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Ed GauntAbandoned 2014-10-29Surface coal · Ed Gaunt · MSHA ID 1519520
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Elliott BranchAbandoned 2016-10-03Surface coal · Alden Resources LLC · MSHA ID 1519387
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Ely Fuel Prep PlantAbandoned 1995-03-09Facility coal · Ely Fuel Company · MSHA ID 1513576
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Ely Hollow Deep MineAbandoned and Sealed 1983-07-01Underground coal · Sterling Energy Inc · MSHA ID 1511652
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Energy Ventures #1Abandoned and Sealed 1982-07-06Underground coal · Energy Ventures Corp · MSHA ID 1512751
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Engle Hollow #1Abandoned and Sealed 1996-07-03Underground coal · G & P Contractors Inc · MSHA ID 1517777
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Engle Hollow #2Abandoned and Sealed 1996-07-03Underground coal · G & P Contractors Inc · MSHA ID 1517778
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Engle Hollow MineAbandoned 2009-10-12Surface coal · Alden Resources LLC · MSHA ID 1519096
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Epa No 1Abandoned 1977-12-05Surface coal · Energy Producers Of America · MSHA ID 1508794
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Fawn BranchAbandoned 2023-04-03Surface coal · JMR Resources, LLC · MSHA ID 1519926
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Fire Ring Fuels No 3Abandoned 1981-09-21Surface coal · Fire Ring Fuels Inc · MSHA ID 1512906
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Flag RidgeAbandoned 2023-11-07Surface coal · Mountainside Coal Co., Inc. · MSHA ID 1519627
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Flat Creek MineAbandoned 2016-09-30Surface coal · Mountainside Coal Co., Inc. · MSHA ID 1519696
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Foley No 1Abandoned and Sealed 1986-07-17Surface coal · Carlton Foley · MSHA ID 1514173
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G M No 3Abandoned 1985-08-06Surface coal · G M Coal Company · MSHA ID 1514919
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Gatliff No 2Abandoned 2001-06-19Surface coal · Gatliff Coal Company Inc · MSHA ID 1510392
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Gatliff Tipple #3Abandoned 1991-08-01Facility coal · Gatliff Coal Company Inc · MSHA ID 1506809
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Gh Strip No 3Abandoned and Sealed 1989-01-02Surface coal · Green Hill Mining Inc · MSHA ID 1516165
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GHM-Knox #037Abandoned 2004-03-30Surface coal · Green Hill Mining Inc · MSHA ID 1517574
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Gideon Coal Company #2Abandoned and Sealed 1992-12-17Underground coal · Gideon Coal Company · MSHA ID 1517143
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Gideon Mine #2Abandoned and Sealed 1990-09-26Underground coal · Gideon Coal Company · MSHA ID 1515033
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Gilco No 1Abandoned 1984-05-16Surface coal · Gilco Energy · MSHA ID 1514078
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Gooden BranchAbandoned 2009-08-20Surface coal · Express Co Inc · MSHA ID 1519067
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Goodin CreekAbandoned 2000-09-15Underground coal · Goodin Creek Contracting Inc · MSHA ID 1517980
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Goodin Creek # 1 & 2 Refuge AreaAbandoned 2016-03-16Surface coal · Alden Resources LLC · MSHA ID 1519152
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Gray TippleAbandoned 2020-10-27Facility coal · H Tims Coal Processing, Inc · MSHA ID 1512628
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Gray's Excavating Inc Mine #5Abandoned 2012-04-30Surface coal · Gray's Excavating Inc · MSHA ID 1519524
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H M C TippleAbandoned 1981-08-21Facility coal · H M C Tipple Corp · MSHA ID 1512001
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Hayes GapAbandoned 2019-10-01Surface coal · Loudermilk Contracting Inc · MSHA ID 1519816
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Helton BranchAbandoned 2008-06-04Surface coal · J.R. Mining, Inc. · MSHA ID 1518844
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Hilton No 1 StripAbandoned 1981-09-04Surface coal · Hilton Mining Corp · MSHA ID 1511100
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Hubbs CreekAbandoned 1985-09-26Surface coal · Renfro Construction Company Inc · MSHA ID 1511941
…and 607 more mines not listed here.
Status and date are as reported to MSHA by the operator. Each mine's own page carries its accident, citation and inspection record.
| Feature type | Features |
|---|---|
| Adit | 370 |
| Strip Mine | 247 |
| Strip Mine | 22 |
| P3 Spoil Area | 6 |
| P3 Bench | 4 |
| P2 Clogged Stream Lands | 4 |
| P1 Dangerous Slides | 3 |
| P2 Dangerous Slides | 3 |
| P2 Polluted Water: Human Consumption | 3 |
| P2 Dangerous Impoundments | 2 |
| P2 Dangerous Piles & Embankments | 2 |
| P3 Other | 2 |
| P1 Clogged Streams | 1 |
| P2 Dangerous Highwalls | 1 |
| P1 Dangerous Piles & Embankments | 1 |
| P2 Portals | 1 |
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.
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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.
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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.
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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.
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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.
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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.
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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.
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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).
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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.