Abandoned mines in Warrick County, Indiana
Warrick County, Indiana has 88 mine and prospect features on USGS topographic maps published 1951–1988, including 6 mine openings (shafts, adits and air shafts); 4 of the features carry a name on the map. OSMRE's abandoned mine land inventory lists 414 problems in the county, 65 of them not yet reclaimed. MSHA's register carries 64 mines in the county with status Abandoned or Abandoned and Sealed.
Every mine and prospect feature the USGS digitized from historical topographic maps covering Warrick 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)
- 88
- Mine openings
- 6
- OSMRE problems unreclaimed
- 65
- MSHA mines marked abandoned
- 64
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209 41.6%Mine openingsshafts, adits, air shafts, portals and vertical openings: the ways into underground workings
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76 15.1%Mines and surface workingslabelled mines, open pits, strip mines, placer and hydraulic workings
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6 1.2%Quarries, gravel and borrow pitsconstruction-material and industrial-mineral extraction
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66 13.1%Dumps, tailings, spoil and gobwhat mining left above ground
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2 0.4%Mills, tipples and facilitiesprocessing plants and hazardous structures
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143 28.5%Other reclamation problemshighwalls, subsidence, polluted or clogged water, fires, slides and gases in OSMRE's inventory
| Name on map | Feature |
|---|---|
| Elberfeld Mine | Adit |
| Houston Mine | Mine Shaft |
| Lynnville Mine | Strip Mine area |
| Shaw Mine | 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.
| Problem area | Problem | Status |
|---|---|---|
| Alcoa Y Pit | P2 Dangerous Highwalls | Reclamation Completed |
| Alexander Subsidence | P1 Vertical Openings | Reclamation Completed |
| Alexander Subsidence | P2 Vertical Openings | Reclamation Completed |
| Alley Subsidence | P1 Vertical Openings | Reclamation Completed |
| Ambrose Subsidence | P1 Vertical Openings | Reclamation Completed |
| American Legion Subsidence | P1 Vertical Openings | Reclamation Completed |
| Arnold | P2 Vertical Openings | Reclamation Pending |
| Ashby Project - 4 Rivers Rc&d | P3 Water Problems | Reclamation Completed |
| Bailey Subsidences | P2 Vertical Openings | Reclamation Completed |
| Baker Road | P2 Dangerous Highwalls | In Reclamation |
| Baker Road | P2 Dangerous Slides | Reclamation Completed |
| Baker Road | P2 Subsidence | Reclamation Completed |
| Baker Road East | P2 Dangerous Highwalls | Reclamation Pending |
| Barnhill Cemetery Subsidence | P1 Vertical Openings | Reclamation Completed |
| Bawel Road Subsidence | P1 Vertical Openings | Reclamation Completed |
| Bawel Road Subsidence #2 | P1 Vertical Openings | Reclamation Completed |
| Bell Subsidence | P1 Vertical Openings | Reclamation Completed |
| Bell Subsidence | P2 Vertical Openings | Reclamation Completed |
| Big Creek | P2 Clogged Stream Lands | Reclamation Completed |
| Big Creek | P3 Equipment Facility | Reclamation Completed |
| Big Creek | P3 Gobs | Reclamation Completed |
| Big Creek | P3 Haul Road | Reclamation Completed |
| Big Creek | P3 High Wall | Reclamation Completed |
| Big Creek | P3 Industrial/Residential Waste | Reclamation Completed |
| Big Creek | P3 Slurry | Reclamation Completed |
| Big Creek | P3 Spoil Area | Reclamation Completed |
| Big Creek | P3 Water Problems | Reclamation Completed |
| Big Ditney Hill | P2 Dangerous Piles & Embankments | Reclamation Completed |
| Big Vein Vo | P1 Vertical Openings | Reclamation Completed |
| Biggerstaff Subsidence | P1 Vertical Openings | Reclamation Completed |
| Bill | P3 High Wall | In Reclamation |
| Bill | P3 Pits | In Reclamation |
| Blackford Subsidence | P1 Vertical Openings | Reclamation Completed |
| Bonesteel | P2 Vertical Openings | Reclamation Completed |
| Boone Subsidence | P1 Vertical Openings | Reclamation Completed |
| Boonville | P2 Dangerous Highwalls | In Reclamation |
| Boonville - West | P3 Gobs | Reclamation Completed |
| Boonville - West | P3 Pits | Reclamation Completed |
| Boonville - West | P3 Spoil Area | Reclamation Completed |
| Boonville #2 | P2 Vertical Openings | Reclamation Completed |
| Boonville #2 South | P2 Vertical Openings | Reclamation Completed |
| Boonville Airport | P2 Vertical Openings | Reclamation Completed |
| Boyer Subsidence | P1 Vertical Openings | Reclamation Completed |
| Bozeman #2 Subsidence | P1 Vertical Openings | Reclamation Completed |
| Bozeman Subsidence | P1 Vertical Openings | Reclamation Completed |
| Bozeman Subsidence #3 | P1 Vertical Openings | Reclamation Completed |
| Bradley Funeral Home Shaft | P1 Vertical Openings | Reclamation Completed |
| Bradley Funeral Home Subsidence | P1 Vertical Openings | Reclamation Completed |
| Branson Subsidence | P2 Vertical Openings | Reclamation Completed |
| Branson Subsidence | P2 Vertical Openings | Reclamation Completed |
| Brown Subsidence | P2 Vertical Openings | Reclamation Completed |
| Browning Road Subsidence | P1 Vertical Openings | Reclamation Completed |
| Browning Road Subsidence | P2 Vertical Openings | Reclamation Completed |
| Burdett Vertical Opening | P2 Vertical Openings | Reclamation Completed |
| Byers Subsidence | P1 Vertical Openings | Reclamation Completed |
| Byers Subsidence | P2 Vertical Openings | Reclamation Completed |
| Carter - Taylor | P3 Gobs | Reclamation Completed |
| Carter - Taylor | P3 Industrial/Residential Waste | Reclamation Completed |
| Carter - Taylor | P3 Spoil Area | Reclamation Completed |
| Cash #1 | P2 Dangerous Highwalls | In Reclamation |
| Castleman Subsidence | P2 Vertical Openings | Reclamation Completed |
| Center | P2 Dangerous Highwalls | Reclamation Completed |
| Chandler #1 | P1 Vertical Openings | Reclamation Completed |
| Chandler #2 | P2 Vertical Openings | Reclamation Completed |
| Chandler #2 | P2 Vertical Openings | Reclamation Completed |
| Chandler #3 | P2 Vertical Openings | Reclamation Completed |
| Chandler #3 | P3 Equipment Facility | Reclamation Completed |
| Chandler Mine Complex | P1 Subsidence | In Reclamation |
| Chandler Mine Gas | P1 Gases: Hazardous/Explosive | Reclamation Completed |
| Chapel | P2 Dangerous Highwalls | In Reclamation |
| Charleton Ave - Grouting | P1 Subsidence | Reclamation Pending |
| Charleton Subsidence | P1 Vertical Openings | Reclamation Completed |
| Christmas & Davis | P2 Vertical Openings | Reclamation Completed |
| Chuck Hole | P2 Vertical Openings | Reclamation Completed |
| Clinton Drive Subsidence | P1 Vertical Openings | Reclamation Completed |
| Coles Creek North | P3 Gobs | Reclamation Completed |
| Coles Creek South | P3 Gobs | Reclamation Completed |
| Coles Creek South | P3 Pits | Reclamation Completed |
| Coles Creek South | P3 Spoil Area | Reclamation Completed |
| Coles Creek South | P3 Water Problems | Reclamation Completed |
| Coles Creek South | P3 Water Problems | In Reclamation |
| Comet | P2 Vertical Openings | Reclamation Completed |
| Comet | P3 Equipment Facility | Reclamation Completed |
| Comet | P3 Gobs | Reclamation Completed |
| Crosstown Grouting | P1 Subsidence | Reclamation Completed |
| Crowville Ditch | P2 Dangerous Highwalls | In Reclamation |
| Curtis | P2 Vertical Openings | Reclamation Completed |
| Curtis | P2 Vertical Openings | Reclamation Completed |
| Cypress Creek | P2 Dangerous Highwalls | In Reclamation |
| David Kelley Opening | P2 Vertical Openings | Reclamation Completed |
| Dello Subsidence | P2 Vertical Openings | Reclamation Completed |
| Ditney Hill | P2 Vertical Openings | Reclamation Completed |
| Ditney Hill | P3 Gobs | Reclamation Completed |
| Doug's Auto Seep | P3 Water Problems | Reclamation Completed |
| Dunnington/portteus | P3 Slump | Reclamation Completed |
| Dwight Baker Subsidences | P2 Vertical Openings | Reclamation Completed |
| Dyer Subsidence | P2 Vertical Openings | Reclamation Completed |
| Eadon Subsidence | P2 Vertical Openings | Reclamation Completed |
| Earl Mosbey Subsidence | P3 Slump | Reclamation Completed |
| East Main St - Grouting | P1 Subsidence | Reclamation Completed |
| Ebenezer Church #2 | P3 Gobs | Reclamation Pending |
| Ebenezer Church #2 | P3 Industrial/Residential Waste | Reclamation Pending |
| Eble Subsidence | P2 Vertical Openings | Reclamation Completed |
| Eby Road | P2 Dangerous Highwalls | Reclamation Completed |
| Edgewood Subsidence | P1 Vertical Openings | Reclamation Completed |
| Edgewood Subsidence | P1 Vertical Openings | Reclamation Completed |
| Ellison | P2 Vertical Openings | Reclamation Completed |
| Ellison Subsidence | P1 Vertical Openings | Reclamation Completed |
| Elzer | P2 Vertical Openings | Reclamation Completed |
| Elzer Subsidence | P2 Vertical Openings | Reclamation Completed |
| Evans Subsidence | P1 Vertical Openings | Reclamation Completed |
| Farney Sag Subsidence | P1 Vertical Openings | Reclamation Completed |
| Favreau Subsidence | P2 Vertical Openings | Reclamation Completed |
| Fleming Subsidence | P1 Vertical Openings | Reclamation Completed |
| Fletcher Slide | P1 Dangerous Slides | Reclamation Completed |
| Floyd Cemetery | P2 Dangerous Highwalls | Reclamation Completed |
| Floyd Cemetery | P2 Dangerous Highwalls | Reclamation Completed |
| Floyd Cemetery | P3 Gobs | Reclamation Completed |
| Floyd Cemetery | P3 Pits | Reclamation Completed |
| Floyd Cemetery | P3 Spoil Area | Reclamation Completed |
| Folsomville #1 | P2 Dangerous Highwalls | Reclamation Pending |
| Folsomville #1 | P3 Gobs | Reclamation Pending |
| Folsomville #1 | P3 Industrial/Residential Waste | Reclamation Completed |
| Folsomville #1 | P3 Pits | Reclamation Completed |
| Folsomville #1 | P3 Spoil Area | In Reclamation |
| Folsomville #1 | P3 Water Problems | Reclamation Pending |
| Folsomville #2/#3 | P2 Dangerous Highwalls | In Reclamation |
| Folsomville #2/#3 | P3 Gobs | Reclamation Completed |
| Folsomville #2/#3 | P3 Water Problems | Reclamation Completed |
| Folz Subsidence | P1 Vertical Openings | Reclamation Completed |
| Folz Subsidence #2 | P1 Vertical Openings | Reclamation Completed |
| Fritchley Guardrail | P2 Dangerous Highwalls | In Reclamation |
| Garrett Subsidences | P2 Vertical Openings | Reclamation Completed |
| Gentry Subsidence | P1 Vertical Openings | Reclamation Completed |
| Gentry Subsidence #2 | P1 Vertical Openings | Reclamation Completed |
| Glass Subsidence | P1 Vertical Openings | Reclamation Completed |
| Gough Avenue Subsidence | P2 Vertical Openings | Reclamation Completed |
| Gough Subsidence | P2 Vertical Openings | Reclamation Completed |
| Gould Subsidence | P1 Subsidence | Reclamation Completed |
| Green Subsidence | P1 Vertical Openings | Reclamation Completed |
| Greenwood | P2 Vertical Openings | Reclamation Completed |
| Guardrail - Hewins Road | P2 Dangerous Highwalls | In Reclamation |
| Guardrail - West Anderson Road | P2 Dangerous Highwalls | In Reclamation |
| Haas Von Borehole | P2 Vertical Openings | Reclamation Completed |
| Harpenau | P2 Vertical Openings | Reclamation Completed |
| Hay Subsidence | P1 Vertical Openings | Reclamation Completed |
| Haynes Subsidence | P1 Vertical Openings | Reclamation Completed |
| Heck #2 | P1 Vertical Openings | Reclamation Completed |
| Heck Subsidence | P1 Vertical Openings | Reclamation Completed |
| Hendrickson Subsidence | P2 Subsidence | Reclamation Completed |
…and 264 more problems not listed here.
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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ADDCAR System 11 HWM Serial No 23011Abandoned 2013-05-08Surface coal · ICG ADDCAR Systems LLC · MSHA ID 4608799
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ADDCAR Systems 13 HWM Serial No 23013Abandoned 2012-09-05Surface coal · ICG ADDCAR Systems LLC · MSHA ID 1202351
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Auger #1Abandoned 1980-10-24Surface coal · Auger Associates Inc · MSHA ID 1201778
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Ayrshire MineAbandoned 1998-02-23Surface coal · Warrick Holding Company · MSHA ID 1201031
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Big FootAbandoned 1984-06-01Surface coal · Amax Coal Company · MSHA ID 1201937
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Blue Creek No 3 StripAbandoned 1979-10-01Surface coal · Blue Creek Mining Company Inc · MSHA ID 1201591
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Boonville #1Abandoned 1992-12-01Surface coal · Warrick County Coal Corp · MSHA ID 1202014
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Bowen Augering Company IncAbandoned 1982-09-29Surface coal · Bowen Augering Company Inc · MSHA ID 1201877
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Boyd PitAbandoned 1988-04-08Surface coal · J & J Coal Company Inc · MSHA ID 1201866
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Brown StripAbandoned 1980-10-24Surface coal · Winslow Coal Company Inc · MSHA ID 1201634
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Carbon #2Abandoned 2006-08-14Facility coal · Carbon Operations of Indiana, LLC · MSHA ID 1202233
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Chandler StripAbandoned 1981-09-28Surface coal · Ohio Valley Company Construction Division Inc · MSHA ID 1201638
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Chili Pepper MineAbandoned 2012-04-10Surface coal · Vigo Coal Operating Co., Inc. · MSHA ID 1202413
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Cobra No 1 (Strip)Abandoned 1980-07-31Surface coal · K & K Excavating Inc · MSHA ID 1201731
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Cornell StripsAbandoned 1974-06-10Surface coal · Cornell Excavating Inc · MSHA ID 1200318
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Cypress Creek AugerAbandoned 2003-09-02Surface coal · Black Hawk Mining Inc · MSHA ID 1202278
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Cypress Creek MineAbandoned 2010-12-28Surface coal · Vigo - Cypress Mine LLC · MSHA ID 1202178
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Cypress Creek Synfuel FacilityAbandoned 2008-03-27Facility coal · TTI Tech LLC · MSHA ID 1202401
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Deer RidgeAbandoned 2002-09-16Surface coal · United Minerals Company Llc · MSHA ID 1202060
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Deer RidgeAbandoned 1997-01-21Surface coal · Danny Jasper Inc · MSHA ID 1202173
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ElberfeldAbandoned 1993-07-19Surface coal · Warrick Minerals Inc · MSHA ID 1202111
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Elberfeld Contracting Company StripAbandoned 1979-10-01Surface coal · Elberfeld Contracting Company Inc · MSHA ID 1201533
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Feuerbach No 1 StripAbandoned 1980-02-19Surface coal · Feuerbach Mining Company · MSHA ID 1201621
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Five Star #1Abandoned and Sealed 2011-10-06Surface coal · B B Mining Inc · MSHA ID 1202182
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Flat RockAbandoned 1995-03-22Surface coal · Danny Jasper Inc · MSHA ID 1202135
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Happel MineAbandoned 1981-09-28Surface coal · Super Block Coal Corp · MSHA ID 1201834
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Harter PitAbandoned 1982-11-19Surface coal · Vigo Coal Company Inc · MSHA ID 1201776
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High Point MineAbandoned 2018-10-01Surface coal · United Minerals Company LLC · MSHA ID 1202469
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Hwm #3Abandoned 1992-06-11Surface coal · Mining Technologies Inc · MSHA ID 1202118
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HWM JOB #27Abandoned 2002-09-16Surface coal · Mining Technologies Inc · MSHA ID 1202309
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HWM Job #27-BAbandoned 2002-08-28Surface coal · Mining Technologies, Inc. · MSHA ID 1202323
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Krantz MineAbandoned 2003-08-21Surface coal · Regional Equipment Rental Inc · MSHA ID 1202204
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Lady Anne No 1 StripAbandoned 1979-10-01Surface coal · Crag Corp · MSHA ID 1201594
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Little Pigeon #1Abandoned 1983-07-01Surface coal · Bar Construction Inc · MSHA ID 1201913
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LynnvilleAbandoned 2001-03-08Surface coal · Peabody Coal Company · MSHA ID 1200337
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Lynville WestAbandoned 1987-02-25Surface coal · Warrick County Coal Corp · MSHA ID 1201957
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Miller Pit StripAbandoned 1979-10-01Surface coal · Coal Power Limited · MSHA ID 1201586
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Newburgh YardAbandoned 2011-12-05Facility metal/non-metal · Mulzer Crushed Stone · MSHA ID 1202380
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Range Line MineAbandoned 2006-03-28Facility coal · Vigo Coal OperatingCompany, Inc · MSHA ID 1202305
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Red Brush AugerAbandoned 2004-08-19Surface coal · Black Hawk Mining, Inc. · MSHA ID 1202334
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Red Brush MineAbandoned 2015-02-19Surface coal · Vigo Coal Operating Co., Inc · MSHA ID 1202259
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Roberts LeaseAbandoned 1979-10-01Surface coal · Christian Mining Corp · MSHA ID 1201622
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S & S No 2 Mine (Strip)Abandoned 1980-10-24Surface coal · S & S Coal Company Inc · MSHA ID 1201676
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Schultz No 1 StripAbandoned 1977-11-03Surface coal · Schultz Brothers Excavating Inc · MSHA ID 1201266
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Selvin MineAbandoned 1983-07-22Surface coal · Will Mining Corp · MSHA ID 1201706
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Series Iv Inc Black Pit No 1Abandoned 1983-01-21Surface coal · Series Iv Inc · MSHA ID 1201878
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Skelton MineAbandoned 1996-09-24Surface coal · Foertsch Construction Company Inc · MSHA ID 1202145
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Solar #1 WarrickAbandoned 1999-12-28Surface coal · Solar Sources Inc · MSHA ID 1201395
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South Pit StripAbandoned 1979-10-01Surface coal · Mifflin Mining Company Inc · MSHA ID 1200432
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Southern Indiana Terminal CorpAbandoned 1982-09-29Surface coal · Southern Indiana Terminal Corp · MSHA ID 1201889
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Spur UndergroundAbandoned and Sealed 1981-09-30Underground coal · Peabody Coal Company · MSHA ID 1201396
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Squaw CreekAbandoned 2003-08-21Surface coal · Peabody Coal Company · MSHA ID 1200336
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Vigo No 6Abandoned 1985-10-28Surface coal · Vigo Coal Company Inc · MSHA ID 1201886
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Warrick No 1Abandoned 1981-09-01Surface coal · Superior Coal Inc · MSHA ID 1201860
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Warrick No 1 StripAbandoned 1980-04-29Surface coal · Lincoln Hills Coal Company Inc · MSHA ID 1201758
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West 61Abandoned 2018-10-01Surface coal · United Minerals Company LLC · MSHA ID 1202407
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Weyerbacher Pit #1Abandoned 1981-10-08Surface coal · Daviess County Resources · MSHA ID 1201824
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Wilkinson & AssociatesAbandoned 1977-01-21Surface coal · Olinger Construction Inc · MSHA ID 1201459
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Will Coal Mine No 1 (Millersburg Pit)Abandoned 1980-01-18Surface coal · Will Construction Company Inc · MSHA ID 1200942
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WrightAbandoned 1984-11-07Surface coal · Amax Coal Company · MSHA ID 1200335
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Yankeetown #1Abandoned 1992-04-27Surface coal · Warrick County Coal Corp · MSHA ID 1201990
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Yankeetown #2Abandoned 1992-12-01Surface coal · Warrick Minerals Inc · MSHA ID 1202110
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Yankeetown DockAbandoned 1995-12-20Facility coal · Yankeetown Dock Corp · MSHA ID 1200894
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Zimmer MineAbandoned 1997-06-05Surface coal · Danny Jasper Inc · MSHA ID 1202152
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 |
|---|---|
| P1 Vertical Openings | 115 |
| P2 Vertical Openings | 87 |
| Strip Mine | 74 |
| P2 Dangerous Highwalls | 41 |
| P3 Gobs | 30 |
| P3 Spoil Area | 27 |
| P3 Water Problems | 18 |
| P3 Pits | 13 |
| P1 Subsidence | 12 |
| P3 Industrial/Residential Waste | 9 |
| P2 Dangerous Piles & Embankments | 9 |
| P3 Equipment Facility | 8 |
| P3 Slurry | 7 |
| Mine Shaft | 5 |
| P2 Subsidence | 5 |
| Gravel Pit | 5 |
| P3 Other | 4 |
| P3 Haul Road | 4 |
| P3 Mine Opening | 4 |
| P3 High Wall | 3 |
| P1 Dangerous Slides | 3 |
| P3 Slump | 2 |
| P2 Dangerous Slides | 2 |
| P1 Dangerous Highwalls | 2 |
| Disturbed Surface | 2 |
| Adit | 1 |
| P2 Hazardous Equip & Facilities | 1 |
| P1 Gases: Hazardous/Explosive | 1 |
| P1 Hazardous Equip & Facilities | 1 |
| P2 Dangerous Impoundments | 1 |
| P2 Industrial/Residential Waste | 1 |
| P2 Polluted Water: Agricultural & Industrial | 1 |
| P2 Clogged Stream Lands | 1 |
| P2 Clogged Streams | 1 |
| P2 Portals | 1 |
| Quarry | 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.