| Northrop QuarryFayette, IAMSHA 1300294 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/19/1979 | Fayette CountyReported operatorFayette County-IAReported controller | Neither history importedView source coverage → |
| NORTHWEST MATERIALS, INC.Webster, IANear Fort DodgeMSHA 1301396 | Construction Sand and GravelSurface | AbandonedStatus date: 07/28/2015 | Northwest Materials IncReported operatorRobert WagnerReported controller | Production / employmentSafety recordsView source coverage → |
| Oakland PlantPottawattamie, IAMSHA 1300910 | Construction Sand and GravelSurface | AbandonedStatus date: 06/19/1981 | G A Finley IncReported operatorG A FinleyReported controller | Neither history importedView source coverage → |
| Oatman PitBuena Vista, IANear Storm LakeMSHA 1301118 | Construction Sand and GravelSurface | AbandonedStatus date: 12/31/2015 | Lundell Const Co IncReported operatorMark A LundellReported controller | Production / employmentSafety recordsView source coverage → |
| Obrien QuarryBuchanan, IAMSHA 1301739 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 08/07/1979 | O Brien Quarry CompanyReported operatorObrien Quarry CompanyReported controller | Neither history importedView source coverage → |
| Oden QuarryAppanoose, IANear CentervilleMSHA 1302280 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 05/04/2009 | Twin States Limestone LLCReported operatorPat L SwanReported controller | Production / employmentSafety recordsView source coverage → |
| Oelwein QuarryBuchanan, IAMSHA 1300054 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/22/1985 | Paul Niemann Construction CompanyReported operatorJames L NiemannReported controller | Neither history importedView source coverage → |
| Old Johnston Pit Polk, IANear JohnstonMSHA 1302366 | Sand, CommonSurface | AbandonedStatus date: 08/24/2010 | Hallett MaterialsReported operatorCRH PLCReported controller | Production / employmentSafety recordsView source coverage → |
| Old MineWebster, IAMSHA 1301717 | GypsumUnderground | AbandonedStatus date: 03/30/1978 | United States Gypsum CompanyReported operatorUSG CorporationReported controller | Neither history importedView source coverage → |
| Olin QuarryJones, IAMSHA 1300173 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/08/1985 | Wendling Quarries IncReported operatorManaco CorporationReported controller | Neither history importedView source coverage → |
| Ollie QuarryKeokuk, IAMSHA 1300064 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 05/29/1985 | Kaser CorpReported operatorMartin Marietta Materials Inc; Kaser CorporationReported controller | Neither history importedView source coverage → |
| Olson PitScott, IAMSHA 1301713 | Construction Sand and GravelSurface | AbandonedStatus date: 06/06/1979 | Argo Sand & Gravel CompanyReported operatorCarpenter Louis LReported controller | Neither history importedView source coverage → |
| Olson Sand PitFayette, IAMSHA 1301199 | Construction Sand and GravelSurface | AbandonedStatus date: 10/15/1978 | Paul Niemann Construction CompanyReported operatorJames L NiemannReported controller | Neither history importedView source coverage → |
| Oltmann QuarryButler, IAMSHA 1301743 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/22/1985 | Paul Niemann Construction CompanyReported operatorJames L NiemannReported controller | Neither history importedView source coverage → |
| OMG Midwest ShopPolk, IANear Des MoinesMSHA 1302342 | Sand, Industrial NECFacility | AbandonedStatus date: 04/10/2017 | Hallett MaterialsReported operatorCRH PLCReported controller | Production / employmentSafety recordsView source coverage → |
| Ortmann QuarryLinn, IAMSHA 1301580 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/19/1978 | Wendling Quarries IncReported operatorWendling Quarries IncReported controller | Neither history importedView source coverage → |
| Osceola County PitsOsceola, IAMSHA 1301828 | Construction Sand and GravelSurface | AbandonedStatus date: 10/19/1982 | Osceola County Highway DepartmentReported operatorOsceola CountyReported controller | Neither history importedView source coverage → |
| Osceola QuarryClarke, IAMSHA 1300198 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/11/1985 | Martin Marietta-Construction Aggregates DivisionReported operatorMartin Marietta Materials IncReported controller | Neither history importedView source coverage → |
| Osceola ShopClarke, IAMSHA 1301358 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 04/30/1985 | Martin Marietta-Construction Aggregates DivisionReported operatorMartin Marietta Materials IncReported controller | Neither history importedView source coverage → |
| Osgood PitPalo Alto, IAMSHA 1301861 | Construction Sand and GravelSurface | AbandonedStatus date: 10/01/1979 | Palo Alto County Highway DepartmentReported operatorPalo Alto CountyReported controller | Neither history importedView source coverage → |
| Oshers Sand And Gravel PitEmmet, IAMSHA 1301889 | Construction Sand and GravelSurface | AbandonedStatus date: 06/11/1979 | Oshers Flying ServiceReported operatorOshers Flying ServiceReported controller | Neither history importedView source coverage → |
| Oskaloosa QuarryMahaska, IAMSHA 1300067 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 12/14/1979 | Kaser CorpReported operatorMartin Marietta Materials Inc; Kaser CorporationReported controller | Neither history importedView source coverage → |
| Osterdock QuarryClayton, IAMSHA 1300302 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 09/25/1980 | Kuhlman Construction CompanyReported operatorRick L Kuhlman; Reid E KuhlmanReported controller | Neither history importedView source coverage → |
| Osterkamp Pit And PlantSioux, IAMSHA 1301075 | Construction Sand and GravelSurface | AbandonedStatus date: 07/10/1985 | Hymans Construction Company IncReported operatorDe Graaff NormanReported controller | Neither history importedView source coverage → |
| Otley Mine #1Marion, IAMSHA 1301097 | Coal (Bituminous)Surface | AbandonedStatus date: 05/29/1981 | Otley Coal CompanyReported operatorBlom Fred & Larry VeldhuizenReported controller | Neither history importedView source coverage → |
| Otter Creek QuarryJackson, IAMSHA 1301381 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/10/1985 | B L Anderson IncReported operatorB L Anderson IncReported controller | Neither history importedView source coverage → |
| Otto PitCalhoun, IAMSHA 1301974 | Construction Sand and GravelSurface | AbandonedStatus date: 05/20/1985 | Weaver Construction CompanyReported operatorJames W WeaverReported controller | Neither history importedView source coverage → |
| Packer PitCalhoun, IAMSHA 1301729 | Construction Sand and GravelSurface | AbandonedStatus date: 10/19/1982 | Calhoun County Highway DepartmentReported operatorCalhoun County-IaReported controller | Neither history importedView source coverage → |
| Palo Alto County PitsPalo Alto, IAMSHA 1301862 | Construction Sand and GravelSurface | AbandonedStatus date: 10/19/1982 | Palo Alto County Highway DepartmentReported operatorPalo Alto CountyReported controller | Neither history importedView source coverage → |
| Pape QuarryFayette, IAMSHA 1300293 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/10/1979 | Fayette CountyReported operatorFayette County-IAReported controller | Neither history importedView source coverage → |