HISTORICAL SITES / RESEARCH DIRECTORY
Find the public record behind a former mining site. Explore reported locations, mined materials and operating history as a starting point for acquisition, reuse or reclamation research.
History means records exist in the imported sources, including older periods. Missing history is not evidence of a clean safety record. Operator and controller names are the last relationships reported in the Mines snapshot; they are not verified current property owners.
| Mine / reported location | Material / type | Reported status | Reported relationships | Available history |
|---|---|---|---|---|
| Lob Lolly PitArchuleta, CONear Pagosa SpringsMSHA 0504930 | Construction Sand and GravelSurface | AbandonedStatus date: 11/02/2013 | Arboles Sand & Stone LLCReported operatorSteve Wright; Joyce WrightReported controller | Production / employmentSafety recordsView source coverage → |
| LOGAN COUNTY ROAD & BRIDGE DEPTLogan, CONear SterlingMSHA 0504069 | Construction Sand and GravelSurface | AbandonedStatus date: 08/07/2003 | Logan County Road & Bridge DepartmentReported operatorLogan County - CoReported controller | Production / employmentSafety recordsView source coverage → |
| Logan WashGarfield, COMSHA 0502248 | Oil ShaleUnderground | AbandonedStatus date: 02/26/1992 | Emrx CorpReported operatorKofford Kay GReported controller | Neither history importedView source coverage → |
| Logos IGilpin, COMSHA 0503729 | Gold OreUnderground | AbandonedStatus date: 06/15/1982 | Systems Exploration IiReported operatorSystems Exploration IiReported controller | Neither history importedView source coverage → |
| Loloff PitWeld, CONear GreeleyMSHA 0504923 | Construction Sand and GravelSurface | AbandonedStatus date: 08/13/2012 | Richardson Consolidated IncReported operatorRonald L RichardsonReported controller | Production / employmentSafety recordsView source coverage → |
| Loma No 1 MineGarfield, COMSHA 0502907 | Coal (Bituminous)Underground | AbandonedStatus date: 01/13/1977 | Louisiana Land & Exploration CompanyReported operatorPhillips J GReported controller | Neither history importedView source coverage → |
| Loma No 3 MineGarfield, COMSHA 0503235 | Coal (Bituminous)Underground | AbandonedStatus date: 10/01/1978 | Sheridan Enterprises IncReported operatorOccidental Petroleum CorpReported controller | Neither history importedView source coverage → |
| Loma No 4 MineGarfield, COMSHA 0503236 | Coal (Bituminous)Underground | AbandonedStatus date: 10/01/1978 | Sheridan Enterprises IncReported operatorOccidental Petroleum CorpReported controller | Neither history importedView source coverage → |
| Loma No 5 MineGarfield, COMSHA 0503237 | Coal (Bituminous)Underground | AbandonedStatus date: 10/01/1978 | Sheridan Enterprises IncReported operatorOccidental Petroleum CorpReported controller | Neither history importedView source coverage → |
| Loma No 6 MineGarfield, COMSHA 0503238 | Coal (Bituminous)Underground | AbandonedStatus date: 10/01/1978 | Sheridan Enterprises IncReported operatorOccidental Petroleum CorpReported controller | Neither history importedView source coverage → |
| London MinePark, COMSHA 0500571 | Gold OreUnderground | AbandonedStatus date: 12/09/1991 | Alma London Limited Liability CompanyReported operatorCobb Resources Corp & Boulder Gold IncReported controller | Neither history importedView source coverage → |
| Longfellow ClaimChaffee, COMSHA 0503182 | Iron OreSurface | AbandonedStatus date: 06/23/1980 | R D H CompanyReported operatorHicks CarlReported controller | Neither history importedView source coverage → |
| Longmont PitBoulder, COMSHA 0500982 | Construction Sand and GravelSurface | AbandonedStatus date: 08/01/1988 | Golden Gravel CompanyReported operatorStewart V GoldenReported controller | Neither history importedView source coverage → |
| Longmont PlantBoulder, COMSHA 0500192 | Common ShaleFacility | AbandonedStatus date: 05/21/1982 | Colorado Brick CompanyReported operatorColorado Brick CompanyReported controller | Neither history importedView source coverage → |
| Longmont West MineBoulder, CONear LongmontMSHA 0504660 | Construction Sand and GravelSurface | AbandonedStatus date: 01/17/2006 | Aggregate Industries WCR, Inc.Reported operatorAmrize LtdReported controller | Production / employmentSafety recordsView source coverage → |
| Long Park 15Montrose, COMSHA 0502379 | Uranium OreUnderground | AbandonedStatus date: 12/14/1983 | Union Carbide CorpReported operatorUnion Carbide CorpReported controller | Neither history importedView source coverage → |
| Lorencito Canyon MineLas Animas, CONear WestonMSHA 0504712 | Coal (Bituminous)Surface | AbandonedStatus date: 06/25/2005 | Lorencito Coal Company, LLCReported operatorA Bruce Addington; Erik AddingtonReported controller | Production / employmentSafety recordsView source coverage → |
| Lost Canyon PitMontezuma, COMSHA 0504125 | Construction Sand and GravelSurface | AbandonedStatus date: 09/05/1989 | Randolph Backhoe & TruckingReported operatorRandolph Backhoe & TruckingReported controller | Neither history importedView source coverage → |
| Lost DutchmanMesa, COMSHA 0500909 | Uranium OreUnderground | AbandonedStatus date: 07/20/1982 | Rajah Ventures LtdReported operatorSwerdfeger R MReported controller | Neither history importedView source coverage → |
| Lota Rock PitPark, COMSHA 0504463 | Construction Sand and GravelSurface | AbandonedStatus date: 08/16/1994 | Pridemore Construction IncReported operatorPridemore Clifford LReported controller | Neither history importedView source coverage → |
| Loukonen Stone YardBoulder, COMSHA 0504193 | Dimension SandstoneSurface | AbandonedStatus date: 08/21/1989 | Loukonen Brothers StoneReported operatorL. Dean LoukonenReported controller | Neither history importedView source coverage → |
| Lowell PitDouglas, COMSHA 0504543 | Construction Sand and GravelSurface | AbandonedStatus date: 09/28/1995 | Douglas CountyReported operatorDouglas County-CoReported controller | Neither history importedView source coverage → |
| Lowe PlacerClear Creek, COMSHA 0503965 | Gold OreSurface | AbandonedStatus date: 06/05/1986 | Moritz Mining Company IncReported operatorPatrick D MaherReported controller | Neither history importedView source coverage → |
| Lower Mountain TopOuray, CONear OurayMSHA 0504984 | Gold OreUnderground | AbandonedStatus date: 09/11/2012 | St Sophia Holding LtdReported operatorLawrence J O'ConnorReported controller | Production / employmentSafety recordsView source coverage → |
| Lp-8Montrose, COMSHA 0501726 | Uranium-Vanadium OreUnderground | AbandonedStatus date: 08/29/1988 | Gary ShumwayReported operatorShumway GaryReported controller | Neither history importedView source coverage → |
| L S WoodPitkin, CONear CarbondaleMSHA 0500300 | Coal (Bituminous)Underground | AbandonedStatus date: 12/02/1985 | Mid-Continent Resources IncReported operatorMid-Continent Minerals CorpReported controller | Neither history importedView source coverage → |
| Lucio Vasquez Quarry 1Boulder, CONear LyonsMSHA 0504502 | Dimension SandstoneSurface | AbandonedStatus date: 05/05/2006 | Noland StoneReported operatorIgnacio Vasquez SrReported controller | Production / employmentSafety recordsView source coverage → |
| Lucky StrikeMesa, COMSHA 4201533 | Uranium OreUnderground | AbandonedStatus date: 03/01/1988 | Pene MiningReported operatorRon A PeneReported controller | Neither history importedView source coverage → |
| Lupton Meadows Gravel MineWeld, CONear Fort LuptonMSHA 0505161 | Construction Sand and GravelSurface | AbandonedStatus date: 09/09/2024 | BURNCO Colorado LLCReported operatorBurnco Rock Products LtdReported controller | Production / employmentSafety recordsView source coverage → |
| Lustre Lode QuarryJefferson, COMSHA 0500076 | Crushed, Broken SandstoneSurface | AbandonedStatus date: 03/26/1979 | Colonna Of Colorado CompanyReported operatorBill MurphreeReported controller | Neither history importedView source coverage → |
Use the mine name and reported location to investigate county parcel and title records, mineral rights, access and planning constraints. MSHA mailing addresses are addresses of record and may not locate the mine. Confirm the parcel and current ownership separately.
EPA mine-site redevelopment primer ↗Check official reclamation inventories and state or tribal programmes for documented hazards, project status and programme criteria. A matching name or an MSHA abandoned status alone does not confirm a programme match.
OSMRE abandoned mine land programme ↗Source: MSHA public datasets. Production history checks quarterly and annual mine production/employment records. Safety history checks violations, inspections and accident reports; other source coverage is available on each mine profile.