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 |
|---|---|---|---|---|
| Ocotillo PlantImperial, CAMSHA 0403735 | Construction Sand and GravelSurface | AbandonedStatus date: 03/22/1983 | William H Raley Company IncReported operatorWilliam H Raley Company IncReported controller | Neither history importedView source coverage → |
| Octo MineNevada, CAMSHA 0404673 | Gold OreSurface | AbandonedStatus date: 04/24/1985 | Double Eagle Exploration CorpReported operatorLawler DavidReported controller | Neither history importedView source coverage → |
| Offield Placer Mining CompanySiskiyou, CANear HamburgMSHA 0405567 | Gold OreSurface | AbandonedStatus date: 02/21/2007 | Offield Placer Mining CompanyReported operatorJames E McGuireReported controller | Production / employmentSafety recordsView source coverage → |
| Ohio DixButte, CAMSHA 0404698 | Gold OreUnderground | AbandonedStatus date: 05/21/1984 | Queenstake ResourcesReported operatorQueenstake ResourcesReported controller | Neither history importedView source coverage → |
| O K West #1San Bernardino, CAMSHA 0404456 | Gold OreUnderground | AbandonedStatus date: 06/07/1984 | Vail Mining & Milling CompanyReported operatorHarkness Verne WReported controller | Neither history importedView source coverage → |
| OLANCHA MILLInyo, CANear OlanchaMSHA 0402620 | TalcFacility | AbandonedStatus date: 07/01/2011 | Big Pine DistributorsReported operatorJesse HutchingsReported controller | Production / employmentSafety recordsView source coverage → |
| Olancha White PumiceInyo, CAMSHA 0405104 | PumiceSurface | AbandonedStatus date: 04/01/1991 | Olancha White Pumice ProductsReported operatorOlancha White Pumice ProductsReported controller | Neither history importedView source coverage → |
| Old Noble MinesSan Diego, CAMSHA 0403708 | Gold OreFacility | AbandonedStatus date: 04/22/1982 | Old Noble MineReported operatorOld Noble MineReported controller | Neither history importedView source coverage → |
| Old Smith Family MineSierra, CANear DownievilleMSHA 0405820 | Gold OreUnderground | AbandonedStatus date: 05/13/2011 | Ernie PeachayReported operatorErnie Paul PeachayReported controller | Production / employmentSafety recordsView source coverage → |
| Oliver Brothers SaltAlameda, CAMSHA 0404034 | Salt, Brine EvaporatedSurface | AbandonedStatus date: 05/21/1982 | Oliver Brothers Salt CompanyReported operatorOliver Brothers Salt CompanyReported controller | Neither history importedView source coverage → |
| Olympia Plant #125Santa Cruz, CANear FELTONMSHA 0401890 | Construction Sand and GravelSurface | AbandonedStatus date: 02/11/2003 | Rmc Pacific MaterialsReported operatorCemex S AReported controller | Production / employmentSafety recordsView source coverage → |
| Omega MineTuolumne, CAMSHA 0404536 | Gold OreUnderground | AbandonedStatus date: 12/26/1991 | G P Mining CompanyReported operatorHyatt James RReported controller | Neither history importedView source coverage → |
| Omega PitSan Bernardino, CAMSHA 0401106 | TalcSurface | AbandonedStatus date: 05/21/1985 | Huntington Tile IncReported operatorDavid H MurdockReported controller | Neither history importedView source coverage → |
| One Thousand Palms Rock PlantRiverside, CAMSHA 0404455 | Construction Sand and GravelSurface | AbandonedStatus date: 01/26/1981 | E L Yeager Construction Company IncReported operatorSkanska ABReported controller | Neither history importedView source coverage → |
| Onsite Krushing Co.Los Angeles, CANear TemeculaMSHA 0405772 | Sand, Industrial NECSurface | AbandonedStatus date: 01/05/2009 | Onsite Krushing Co.Reported operatorJim JacksonReported controller | Production / employmentSafety recordsView source coverage → |
| Optimist Mining CoTuolumne, CAMSHA 0404584 | Gold OreUnderground | AbandonedStatus date: 06/08/1982 | Optimist Mining CoReported operatorOptimist Mining CoReported controller | Neither history importedView source coverage → |
| ORANGE AVENUE DISPOSAL RICE RD SFresno, CANear fresnoMSHA 0405438 | Construction Sand and GravelSurface | AbandonedStatus date: 10/01/2004 | Orange Avenue Disposal IncReported operatorFrank S CagliaReported controller | Production / employmentSafety recordsView source coverage → |
| Orange County Water District Sand POrange, CAMSHA 0404043 | Construction Sand and GravelSurface | AbandonedStatus date: 08/10/1978 | Materials Transport Services IncReported operatorPaul H Cleary Jr; Jim D GraceReported controller | Neither history importedView source coverage → |
| Orange PlantOrange, CAMSHA 0401737 | Construction Sand and GravelSurface | AbandonedStatus date: 07/29/1983 | Conrock CompanyReported operatorCalmat CompanyReported controller | Neither history importedView source coverage → |
| Orange PlantOrange, CAMSHA 0401918 | Construction Sand and GravelSurface | AbandonedStatus date: 05/16/1985 | R J Noble CompanyReported operatorMichael CarverReported controller | Neither history importedView source coverage → |
| OrientalSierra, CAMSHA 0400898 | Gold OreUnderground | AbandonedStatus date: 01/31/1993 | Dickey Exploration Company IncReported operatorDickey Donald RReported controller | Safety recordsView source coverage → |
| Orland Sand & Gravel CorporationGlenn, CANear ORLANDMSHA 0401876 | Construction Sand and GravelSurface | AbandonedStatus date: 08/16/2022 | Orland Sand & Gravel CorporationReported operatorDale R (Doc) BogartReported controller | Production / employmentSafety recordsView source coverage → |
| OROFLAME QUARTZ MINESierra, CAMSHA 0404322 | Gold OreUnderground | AbandonedStatus date: 08/05/1998 | Oroflame MineReported operatorSnyder Richard VReported controller | Neither history importedView source coverage → |
| Oro Grande AggregatesSan Bernardino, CANear Oro GrandeMSHA 0405906 | Construction Sand and GravelSurface | AbandonedStatus date: 09/15/2016 | CalPortlandReported operatorTaiheiyo Cement CorpReported controller | Production / employmentSafety recordsView source coverage → |
| Oro Grande PlantSan Bernardino, CAMSHA 0404348 | CementFacility | AbandonedStatus date: 10/20/1988 | Riverside Cement CompanyReported operatorHanson PLCReported controller | Neither history importedView source coverage → |
| ORO GRANDE ROCK PLANTSan Bernardino, CAMSHA 0404162 | Construction Sand and GravelSurface | AbandonedStatus date: 08/30/2001 | Calmat CompanyReported operatorVulcan Materials CompanyReported controller | Production / employmentView source coverage → |
| Oro MineNevada, CAMSHA 0404510 | Gold OreUnderground | AbandonedStatus date: 08/28/1989 | Thomas MiningReported operatorThomas AliceReported controller | Neither history importedView source coverage → |
| O'Sullivan Ranch PitColusa, CANear WilliamsMSHA 0405273 | Construction Sand and GravelSurface | AbandonedStatus date: 06/24/2016 | Clearlake Redi-Mix IncReported operatorRichard D ThornReported controller | Production / employmentSafety recordsView source coverage → |
| Owens Lake GoldInyo, CAMSHA 0404737 | Gold OreFacility | AbandonedStatus date: 11/21/1991 | Keystone Mining CompanyReported operatorDu Shane Kirk LReported controller | Neither history importedView source coverage → |
| Owl'S Hole MineSan Bernardino, CAMSHA 0404561 | Iron OreSurface | AbandonedStatus date: 11/23/1983 | Jebco Mining Company IncReported operatorJebco Mining Company IncReported 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.