| Richlue MineEl Dorado, CAMSHA 0404697 | Gold OreUnderground | AbandonedStatus date: 10/23/1984 | Teddy Bear Mining CompanyReported operatorGillespie Thomas AReported controller | Neither history importedView source coverage → |
| RICHMARK CANYON TALC INC.Inyo, CAMSHA 0405327 | TalcSurface | AbandonedStatus date: 03/15/1999 | Richmark Canyon Talc IncReported operatorRichmark Resources LtdReported controller | Neither history importedView source coverage → |
| Richmond Mill/StocktonContra Costa, CAMSHA 0402315 | LimeFacility | AbandonedStatus date: 07/17/1990 | Chemstar Lime CompanyReported operatorLhoist GroupReported controller | Neither history importedView source coverage → |
| Richmond PlantContra Costa, CAMSHA 0400919 | GypsumFacility | AbandonedStatus date: 05/21/1982 | National Gypsum CompanyReported operatorLafarge S AReported controller | Neither history importedView source coverage → |
| RICHMOND QUARRYContra Costa, CAMSHA 0400228 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 03/12/1998 | Dutra MaterialsReported operatorBill T DutraReported controller | Neither history importedView source coverage → |
| Rich Ranch ReclamationShasta, CANear PlymouthMSHA 0405599 | Construction Sand and GravelSurface | AbandonedStatus date: 10/22/2007 | North Fork AggregateReported operatorRobin RichReported controller | Production / employmentSafety recordsView source coverage → |
| Rich & Whillock IncorporatedSan Diego, CAMSHA 0404631 | Crushed, Broken GraniteSurface | AbandonedStatus date: 08/07/1984 | Rich & Whillock IncReported operatorRich & Whillock IncReported controller | Neither history importedView source coverage → |
| Right Star Calcite MineSan Bernardino, CANear Lucerne ValleyMSHA 0405133 | Chem. and Fertil. Mnls. NECSurface | AbandonedStatus date: 08/27/2007 | Right Star CalciteReported operatorDonald L FifeReported controller | Production / employmentSafety recordsView source coverage → |
| Rio Tinto MineKern, CANear BoronMSHA 0405925 | Construction Sand and GravelSurface | AbandonedStatus date: 06/21/2019 | KiewitReported operatorKiewit Infrastructure Group IncReported controller | Production / employmentSafety recordsView source coverage → |
| Ripley QuarryRiverside, CAMSHA 0404797 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 08/01/1988 | Fairfax & Rogers ConstructionReported operatorFairfax John & L W RogersReported controller | Neither history importedView source coverage → |
| RIVER PLANTKern, CANear BakersfieldMSHA 0405085 | Construction Sand and GravelSurface | AbandonedStatus date: 01/15/2019 | Kern Brothers Trucking IncReported operatorJerry T KernReported controller | Production / employmentSafety recordsView source coverage → |
| River Road Sand JobRiverside, CANear CoronaMSHA 0405505 | Construction Sand and GravelSurface | AbandonedStatus date: 11/28/2008 | KEC EngineeringReported operatorJim ElfringReported controller | Production / employmentSafety recordsView source coverage → |
| River Rock PlantFresno, CANear FresnoMSHA 0401711 | Construction Sand and GravelSurface | AbandonedStatus date: 07/01/2021 | CalMat CoReported operatorVulcan Materials CompanyReported controller | Production / employmentSafety recordsView source coverage → |
| River Rock Sand And GravelYuba, CAMSHA 0404305 | Construction Sand and GravelSurface | AbandonedStatus date: 08/09/1982 | River Rock Construction IncReported operatorRiver Rock Construction IncReported controller | Neither history importedView source coverage → |
| River Sand & GravelSan Luis Obispo, CAMSHA 0404924 | Construction Sand and GravelSurface | AbandonedStatus date: 09/23/1991 | River Sand & Gravel IncReported operatorRiver Sand & Gravel IncReported controller | Neither history importedView source coverage → |
| RiversideRiverside, CANear RiversideMSHA 0405735 | Sand, Industrial NECSurface | AbandonedStatus date: 04/07/2016 | A-1 GritReported operatorHarold NewmanReported controller | Production / employmentSafety recordsView source coverage → |
| R J MILES CO-SECRET TOWN PLANTNevada, CAMSHA 0404262 | Construction Sand and GravelSurface | AbandonedStatus date: 08/28/2000 | R J Miles CompanyReported operatorScott MilesReported controller | Production / employmentSafety recordsView source coverage → |
| R.J.Noble Co.Riverside, CANear CoronaMSHA 0405658 | Construction Sand and GravelSurface | AbandonedStatus date: 09/10/2019 | R.J.Noble Co.Reported operatorMichael CarverReported controller | Production / employmentSafety recordsView source coverage → |
| RMQ Plant 1San Bernardino, CANear FallbrookMSHA 0405902 | Construction Sand and GravelSurface | AbandonedStatus date: 01/01/2017 | Edison Construction Inc.Reported operatorCathy RameyReported controller | Production / employmentSafety recordsView source coverage → |
| Road Builders PitSanta Clara, CAMSHA 0404111 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 03/01/1978 | Thomas R BessReported operatorThomas R BessReported controller | Neither history importedView source coverage → |
| Roadrunner 32San Bernardino, CANear HighlandMSHA 0405632 | Construction Sand and GravelSurface | AbandonedStatus date: 10/30/2018 | North County Sand & Gravel IncReported operatorMike J LaPagliaReported controller | Production / employmentSafety recordsView source coverage → |
| Roads End MineSierra, CAMSHA 0404713 | Gold OreSurface | AbandonedStatus date: 04/16/1985 | Geo Placers IncReported operatorSchmittel RichardReported controller | Neither history importedView source coverage → |
| ROBBERS ROOSTKern, CANear kernMSHA 0404676 | Gold OreSurface | AbandonedStatus date: 01/27/1997 | Oro LimitedReported operatorHammond Glen RReported controller | Safety recordsView source coverage → |
| Robertson Sand & GravelSacramento, CAMSHA 0401928 | Construction Sand and GravelSurface | AbandonedStatus date: 08/27/1980 | Robertson Sand & GravelReported operatorRobertson Sand & GravelReported controller | Neither history importedView source coverage → |
| Robertsons Lucern ValleySan Bernardino, CANear LUCERN VALLEYMSHA 0405640 | Construction Sand and GravelSurface | AbandonedStatus date: 10/01/2006 | SLSN INCReported operatorSteve BubaloReported controller | Production / employmentSafety recordsView source coverage → |
| Robertson's Portable Powerscreen PlantSan Bernardino, CANear Redlands Cemex 8203 Orange StMSHA 0405662 | Construction Sand and GravelSurface | AbandonedStatus date: 12/06/2007 | Robertson's Ready-MixReported operatorRRM Development Corporation; Mitsubishi CorpReported controller | Production / employmentSafety recordsView source coverage → |
| Robison Acosta & Blanton Port. Rock CrusCalaveras, CANear VernalisMSHA 0405231 | Construction Sand and GravelSurface | AbandonedStatus date: 07/21/2003 | Robison Acosta Blanton Portable Rock CrushingReported operatorRobert RobisonReported controller | Production / employmentSafety recordsView source coverage → |
| Robuck/Schmidt QuarryVentura, CAMSHA 0404332 | Construction Sand and GravelSurface | AbandonedStatus date: 09/15/1994 | Robuck Construction IncReported operatorHartnett Robin & Charles W Poss IiiReported controller | Neither history importedView source coverage → |
| Rocklite Pit & MillVentura, CAMSHA 0400553 | Common Clays NECSurface | AbandonedStatus date: 10/23/1985 | Lightweight Processing CompanyReported operatorJoseph BairdReported controller | Neither history importedView source coverage → |
| Rock-O Travertine QuarryPlumas, CAMSHA 0404125 | Crushed, Broken MarbleSurface | AbandonedStatus date: 04/07/1981 | Rock-OReported operatorRock-OReported controller | Neither history importedView source coverage → |