| Kolberg Portable Belt & GrizzlyUintah, UTNear VernalMSHA 4202384 | Construction Sand and GravelSurface | AbandonedStatus date: 10/27/2015 | LeGrand Johnson Construction CoReported operatorJanice Sackett; Larry JardineReported controller | Production / employmentSafety recordsView source coverage → |
| KolmanSan Juan, UTNear MoabMSHA 4202651 | Construction Sand and GravelSurface | AbandonedStatus date: 10/21/2019 | K & K Construction IncReported operatorDanny Key; Mary KeyReported controller | Production / employmentView source coverage → |
| KoosharemPiute, UTMSHA 4201991 | Common Clays NECSurface | AbandonedStatus date: 11/17/1986 | Interstate Brick CompanyReported operatorHarvey CahoonReported controller | Neither history importedView source coverage → |
| KoosharemSevier, UTNear GreenwichMSHA 4202508 | Common Clays NECSurface | AbandonedStatus date: 10/13/2015 | Holcim (US) IncReported operatorAmrize LtdReported controller | Production / employmentSafety recordsView source coverage → |
| Kristine No 1 MineCarbon, UTMSHA 4201636 | Coal (Bituminous)Underground | AbandonedStatus date: 12/01/1979 | Sandex Mining CorpReported operatorSanders Exploration LtdReported controller | Neither history importedView source coverage → |
| L-3Weber, UTNear EdenMSHA 4201371 | Construction Sand and GravelSurface | AbandonedStatus date: 11/05/2014 | Geneva Rock Products IncReported operatorCCI (Clyde Companies Inc)Reported controller | Safety recordsView source coverage → |
| L-7 Portable CrusherUtah, UTNear MurrayMSHA 4202304 | Construction Sand and GravelSurface | AbandonedStatus date: 08/01/2007 | Geneva Rock Products IncReported operatorCCI (Clyde Companies Inc)Reported controller | Production / employmentSafety recordsView source coverage → |
| Lake ClaimsSan Juan, UTMSHA 4201343 | Uranium OreUnderground | AbandonedStatus date: 07/23/1980 | M E Mining CompanyReported operatorShumway LymanReported controller | Neither history importedView source coverage → |
| Lake Crystal Saline PlantBox Elder, UTMSHA 4200296 | Salt, Brine EvaporatedSurface | AbandonedStatus date: 05/21/1982 | Lake Crystal Salt CompanyReported operatorFording IncReported controller | Neither history importedView source coverage → |
| Lakefork PitDuchesne, UTMSHA 4201110 | Construction Sand and GravelSurface | AbandonedStatus date: 10/13/1981 | Harris Bethers Construction CompanyReported operatorBethers HarrisReported controller | Neither history importedView source coverage → |
| Lake MineSan Juan, UTMSHA 4201478 | Uranium OreUnderground | AbandonedStatus date: 09/12/1979 | M F Mining CompanyReported operatorM F Mining CompanyReported controller | Neither history importedView source coverage → |
| Lake MineSan Juan, UTMSHA 4201849 | Uranium OreUnderground | AbandonedStatus date: 11/10/1983 | R & S MiningReported operatorSwink BertReported controller | Neither history importedView source coverage → |
| Lake Point PlantTooele, UTMSHA 4200295 | Salt, Brine EvaporatedSurface | AbandonedStatus date: 05/21/1982 | Lake Point Salt CompanyReported operatorRichards StevenReported controller | Neither history importedView source coverage → |
| Lake Point QuarryUtah, UTNear Saratoga SpringsMSHA 4200003 | Construction Sand and GravelSurface | AbandonedStatus date: 08/09/2022 | Ames Construction, Inc. Reported operatorRaymond AmesReported controller | Production / employmentSafety recordsView source coverage → |
| Lakeside Lime Quarry And MillUtah, UTMSHA 4200015 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 11/24/1980 | Limestone Products CorpReported operatorPenn Virginia CorpReported controller | Neither history importedView source coverage → |
| Lakeside QuarryBox Elder, UTMSHA 4201913 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 01/03/1989 | Robert L Helms Construction & Development CoReported operatorHelms Robert L Construction & Development CoReported controller | Neither history importedView source coverage → |
| Lapoint PitUintah, UTNear LaPointMSHA 4202584 | Construction Sand and GravelSurface | AbandonedStatus date: 05/15/2013 | RM Sand & GravelReported operatorRick L MillerReported controller | Production / employmentSafety recordsView source coverage → |
| Lapoint Pit & MillUintah, UTMSHA 4201804 | Construction Sand and GravelSurface | AbandonedStatus date: 01/22/1986 | Jay Tuft & Company IncReported operatorJay Tuft & Company IncReported controller | Neither history importedView source coverage → |
| Larry MineGrand, UTMSHA 4201605 | Uranium OreUnderground | AbandonedStatus date: 05/20/1980 | Atomic Energy CorpReported operatorTurner JackReported controller | Neither history importedView source coverage → |
| Lasal Loop PitGrand, UTMSHA 4201621 | Construction Sand and GravelSurface | AbandonedStatus date: 12/05/1979 | Strong CompanyReported operatorStrong CompanyReported controller | Neither history importedView source coverage → |
| La Sal Number 2San Juan, UTNear La SalMSHA 4201689 | Uranium OreUnderground | AbandonedStatus date: 02/14/2013 | Laramide La Sal, Inc.Reported operatorLaramide Resources LtdReported controller | Safety recordsView source coverage → |
| Last Hope PitSan Juan, UTMSHA 4201195 | Uranium OreSurface | AbandonedStatus date: 07/10/1978 | Silver Eagle Mining CompanyReported operatorSilver Eagle Mining CompanyReported controller | Neither history importedView source coverage → |
| Laura MineSan Juan, UTMSHA 4201346 | Vanadium OreUnderground | AbandonedStatus date: 06/16/1978 | Laura Mining CoReported operatorLaura Mining CoReported controller | Neither history importedView source coverage → |
| Lawson CoveMillard, UTNear BeaverMSHA 4202646 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 07/26/2016 | Zebra Stone QuarryReported operatorGokay Gebologlu; Gokce GebologluReported controller | Production / employmentSafety recordsView source coverage → |
| Le-19Uintah, UTMSHA 4201084 | GilsoniteUnderground | AbandonedStatus date: 11/29/1988 | American Gilsonite CompanyReported operatorChevron CorporationReported controller | Neither history importedView source coverage → |
| Le-5/Le-6Uintah, UTMSHA 4201776 | GilsoniteUnderground | AbandonedStatus date: 12/03/1986 | American Gilsonite CompanyReported operatorChevron CorporationReported controller | Neither history importedView source coverage → |
| Leamington Millard, UTNear DeltaMSHA 4202507 | Construction Sand and GravelSurface | AbandonedStatus date: 10/14/2008 | Dutson Supply Company Inc Reported operatorLarry L DutsonReported controller | Production / employmentView source coverage → |
| Leamington Pass PitMillard, UTMSHA 4201858 | Construction Sand and GravelSurface | AbandonedStatus date: 04/04/1984 | Westcon IncReported operatorMike Ellis; Harold RufReported controller | Neither history importedView source coverage → |
| LEAUTAUD PITCarbon, UTNear PriceMSHA 4201541 | Construction Sand and GravelSurface | AbandonedStatus date: 03/25/2007 | Henrie ConstructionReported operatorEph HenrieReported controller | Production / employmentSafety recordsView source coverage → |
| Lee MineSan Juan, UTMSHA 4201476 | Uranium OreSurface | AbandonedStatus date: 05/13/1980 | Great Plains Mining CorpReported operatorGreat Plains Mining CorpReported controller | Neither history importedView source coverage → |