| Moonlight QuarryStevens, WANear ChewelahMSHA 4500811 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 08/11/2003 | White Stone CompanyReported operatorJames F BennettReported controller | Production / employmentSafety recordsView source coverage → |
| Moon Rock CompanySpokane, WANear SpokaneMSHA 4503690 | Construction Sand and GravelSurface | AbandonedStatus date: 10/10/2019 | Moon Rock CompanyReported operatorSteven L WoodardReported controller | Production / employmentSafety recordsView source coverage → |
| Morgan Brothers ConstructionLewis, WANear SalkumMSHA 4503539 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 05/04/2009 | Morgan Brothers ConstructionReported operatorHugh MorganReported controller | Production / employmentSafety recordsView source coverage → |
| MORGAN KAME TERRACEKing, WANear Black DiamondMSHA 4503338 | Construction Sand and GravelSurface | AbandonedStatus date: 07/09/2026 | Palmer Coking Coal Company LLPReported operatorWilliam KombolReported controller | Production / employmentSafety recordsView source coverage → |
| Morning Glory MineFerry, WAMSHA 4503022 | Gold OreSurface | AbandonedStatus date: 05/07/1985 | Morning Glory Mining CompanyReported operatorMorning Glory Mining CompanyReported controller | Neither history importedView source coverage → |
| Morning StarFerry, WAMSHA 4503169 | Gold OreUnderground | AbandonedStatus date: 09/22/1988 | Morning Star Mines IncReported operatorMorning Star Mines IncReported controller | Neither history importedView source coverage → |
| Morning Star MineFerry, WANear DanvilleMSHA 4503532 | Gold OreUnderground | AbandonedStatus date: 08/02/2004 | Brooklyn Mining & Exploration Co LLCReported operatorAnne M NovakovichReported controller | Production / employmentSafety recordsView source coverage → |
| Morse Creek PitClallam, WAMSHA 4501282 | Construction Sand and GravelSurface | AbandonedStatus date: 12/14/1982 | Delhur IncReported operatorSamuel G HurworthReported controller | Neither history importedView source coverage → |
| Morse Creek Pit & PlantClallam, WAMSHA 4500624 | Construction Sand and GravelSurface | AbandonedStatus date: 10/30/1979 | Forrest HansenReported operatorForrest HansenReported controller | Neither history importedView source coverage → |
| Morton PitLewis, WAMSHA 4501914 | Construction Sand and GravelSurface | AbandonedStatus date: 03/23/1979 | Pacific Sand & Gravel Company IncReported operatorLakeside Industries Inc.Reported controller | Neither history importedView source coverage → |
| MOSES LAKE PIT & PLANTGrant, WAMSHA 4500603 | Construction Sand and GravelSurface | AbandonedStatus date: 08/13/2001 | Basin Asphalt CompanyReported operatorAlbert E DeAtleyReported controller | Production / employmentSafety recordsView source coverage → |
| Mossyrock QuarryLewis, WAMSHA 4502604 | Crushed, Broken TraprockSurface | AbandonedStatus date: 11/14/1979 | Paul Zimmerly Rock ProductsReported operatorDavid ZimmerlyReported controller | Neither history importedView source coverage → |
| Mother Lode PitChelan, WAMSHA 4502558 | Crushed, Broken TraprockSurface | AbandonedStatus date: 08/08/1979 | Pack River CompanyReported operatorPack River CompanyReported controller | Neither history importedView source coverage → |
| Moulden PitKing, WAMSHA 4502588 | Construction Sand and GravelSurface | AbandonedStatus date: 05/02/1985 | Moulden & AssociatesReported operatorMoulden Ronald FReported controller | Neither history importedView source coverage → |
| Mountain Crest QuarrySan Juan, WANear EastsoundMSHA 4503568 | Construction Sand and GravelSurface | AbandonedStatus date: 06/26/2007 | Mountain Crest QuarryReported operatorJohn D ThompsonReported controller | Production / employmentSafety recordsView source coverage → |
| Mountain View PitKing, WAMSHA 4501356 | Construction Sand and GravelSurface | AbandonedStatus date: 07/18/1979 | Watson Asphalt & Paving Company IncReported operatorCliff SchroederReported controller | Neither history importedView source coverage → |
| Mount Solo QuarryCowlitz, WAMSHA 4501330 | Crushed, Broken TraprockSurface | AbandonedStatus date: 01/29/1979 | Columbia West Materials & Constructors IncReported operatorColumbia West Resources CorpReported controller | Neither history importedView source coverage → |
| Mount Tolman ProjectFerry, WAMSHA 4502169 | Copper Ore NECUnderground | AbandonedStatus date: 04/06/1982 | Amax IncReported operatorCyprus Amax Minerals CompanyReported controller | Neither history importedView source coverage → |
| Mowich Rock StockpilePierce, WANear CarbonadoMSHA 4503825 | Crushed, Broken TraprockSurface | AbandonedStatus date: 10/10/2024 | Washington Rock Quarries Inc.Reported operatorHarry W HartReported controller | Production / employmentView source coverage → |
| Mr. Rock IncDouglas, WANear WenatcheeMSHA 4503640 | Construction Sand and GravelSurface | AbandonedStatus date: 08/01/2011 | Alpine Rock Walls Inc.Reported operatorFred W HackneyReported controller | Production / employmentSafety recordsView source coverage → |
| M & S PitSnohomish, WAMSHA 4501340 | Construction Sand and GravelSurface | AbandonedStatus date: 11/02/1979 | C Martin Trucking IncReported operatorMartin C Trucking IncReported controller | Neither history importedView source coverage → |
| Mt Pleasant PitClallam, WAMSHA 4500972 | Construction Sand and GravelSurface | AbandonedStatus date: 10/31/1979 | Lakeside IndustriesReported operatorLakeside Industries Inc.Reported controller | Neither history importedView source coverage → |
| MT PLEASANT PITClallam, WAMSHA 4503249 | Construction Sand and GravelSurface | AbandonedStatus date: 09/17/2001 | Mt Pleasant Sand & GravelReported operatorThomas TinkhamReported controller | Production / employmentSafety recordsView source coverage → |
| Mt Si QuarryKing, WANear BellevueMSHA 4502189 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 02/13/2025 | Mt Si Quarry SMMReported operatorLance DespainReported controller | Production / employmentSafety recordsView source coverage → |
| Mt St Helens MillCowlitz, WAMSHA 4503142 | Construction Sand and GravelSurface | AbandonedStatus date: 01/22/1990 | Granite Construction CompanyReported operatorGranite Construction IncReported controller | Neither history importedView source coverage → |
| Mt.Top QuarryCowlitz, WANear KelsoMSHA 4503757 | Crushed, Broken BasaltSurface | AbandonedStatus date: 12/01/2021 | J.L. Storedahl & Sons Inc.Reported operatorKimball Storedahl; Kevin StoredahlReported controller | Production / employmentSafety recordsView source coverage → |
| Murphy Bros Portable CrusherSpokane, WANear SpokaneMSHA 4503029 | Construction Sand and GravelSurface | AbandonedStatus date: 08/22/2011 | Murphy Brothers IncReported operatorW O MurphyReported controller | Production / employmentSafety recordsView source coverage → |
| Murphy Pit #5-21Okanogan, WAMSHA 4502706 | Construction Sand and GravelSurface | AbandonedStatus date: 10/09/1979 | Verbeck Brothers IncReported operatorVerbeck RonaldReported controller | Neither history importedView source coverage → |
| Muth QuarryKing, WAMSHA 4501185 | Crushed, Broken TraprockSurface | AbandonedStatus date: 10/02/1979 | Muth Construction CompanyReported operatorMuth Construction CompanyReported controller | Neither history importedView source coverage → |
| N-145-Ext PitCowlitz, WAMSHA 4502478 | Construction Sand and GravelSurface | AbandonedStatus date: 01/11/1979 | Fiorito Brothers IncReported operatorDan FioritoReported controller | Neither history importedView source coverage → |