| MLMed-Co L.L.C. | Federal Way | WA | — | ◇ UNVERIFIED |
| MCMellott Co/warfordsburg Mfg Fac | Warfordsburg | PA | — | ◇ UNVERIFIED |
| MHMercy Housing La Mancha | Sacramento | CA | — | ◇ UNVERIFIED |
| MGMesa General Engineering INC | Castaic | CA | — | ◇ UNVERIFIED |
| MGMesa General Engineering INC | Corona | CA | — | ◇ UNVERIFIED |
| MCMetzger Construction Company INC | Boonville | IN | — | ◇ UNVERIFIED |
| MCMeuth Construction Supply INC | Morganfield | KY | — | ◇ UNVERIFIED |
| MPMeyer Products LLC (1318001982) | Cleveland | OH | — | ◇ UNVERIFIED |
| MLMhwirth, LLC | Mobile | AL | — | ◇ UNVERIFIED |
| MRMichael Runk, Pamela Runk, Duane Runk Excavating | Broad Top | PA | — | ◇ UNVERIFIED |
 M.i.c. Industries, INC. | Winchester | VA | — | ◇ UNVERIFIED |
| MAMid America Trenchers LLC | Dexter | IA | — | ◇ UNVERIFIED |
| MEMiller Environmental, INC. | Orange | CA | — | ◇ UNVERIFIED |
| MTMiller Trucking & Excavating | Carbon Cliff | IL | — | ◇ UNVERIFIED |
| MBMonoflo Breen Road Facility | Houston | TX | — | ◇ UNVERIFIED |
| MCMorgan City Warehouse | Morgan City | LA | — | ◇ UNVERIFIED |
| MWMountain West Crushing Plant | Natrona | WY | — | ◇ UNVERIFIED |
| MMpg | Norco | LA | — | ◇ UNVERIFIED |
| MCMrl Constructors of N.y., INC. | Niagara Falls | NY | — | ◇ UNVERIFIED |
| MDMsi Dixie Iron Works | Midland | TX | — | ◇ UNVERIFIED |
| MJMud Jack King | Kansas City | MO | — | ◇ UNVERIFIED |
| MPMulti Products Company, INC. | Millersburg | OH | — | ◇ UNVERIFIED |
| MLMurray Lane Trust | Athol | MA | — | ◇ UNVERIFIED |
| MBMyers Brothers Well Drilling INC | Hanford | CA | — | ◇ UNVERIFIED |
| NONational Oilwell Galena Park | Galena Park | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Bakersfield | CA | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Houston | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Gonzales | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Houston | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Houston | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco Distribution Services | Casper | WY | — | ◇ UNVERIFIED |
| NONational Oilwell Varco, L.p. | Dayton | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP - Mobile Rigs / National Oilwell | Lindsay | OK | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP / Nov Oklahoma City Rig Offshore | Oklahoma City | OK | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP - Rs Venture Houma | Houma | LA | — | ◇ UNVERIFIED |
| NMNc Machinery Company | Anchorage | AK | — | ◇ UNVERIFIED |
| NENeroco Engineering | Oconto | WI | — | ◇ UNVERIFIED |
| NWNevada Water Trucks | Las Vegas | NV | — | ◇ UNVERIFIED |
| NANew Age Graphics | Irvine | CA | — | ◇ UNVERIFIED |
| NLNext Level Construction Services | Temecula | CA | — | ◇ UNVERIFIED |
| NRNg Resources Corportation | Midland | TX | — | ◇ UNVERIFIED |
| NFNhr Facility | Houston | TX | — | ◇ UNVERIFIED |
| NCNichols Concrete Holdings, LLC - Pelham Plant | Pelham | AL | — | ◇ UNVERIFIED |
| NBNoble Blackhawk | Houston | TX | — | ◇ UNVERIFIED |
| NCNoble Construction Equipment INC | Lubbock | TX | — | ◇ UNVERIFIED |
| NPNorris Production Solutions | Shafter | CA | — | ◇ UNVERIFIED |
| NBNorth Bend Equipment LLC | Florence | KY | — | ◇ UNVERIFIED |
| NENortrax Equipment Company INC. | Lutz | FL | — | ◇ UNVERIFIED |
| NNov | Orange | CA | — | ◇ UNVERIFIED |
| NFNov Fgs L.p. Mineral Wells | Mineral Wells | TX | — | ◇ UNVERIFIED |
| NMNov Mission Products Oregon Street | Odessa | TX | — | ◇ UNVERIFIED |
| NRNov Rig Solutions Brittmoore Repair Center | Houston | TX | — | ◇ UNVERIFIED |
| NRNov Rig Systems Sam Houston Parkway | Houston | TX | — | ◇ UNVERIFIED |
| NWNov Wilco | Marlow | OK | — | ◇ UNVERIFIED |
| NWNov Wise Breen Drive | Houston | TX | — | ◇ UNVERIFIED |
| OIOderco INC. | Liberty | TX | — | ◇ UNVERIFIED |
| OBOdessa Brandt | Odessa | TX | — | ◇ UNVERIFIED |
| OPOdessa Pumps & Equipment INC. | Asherton | TX | — | ◇ UNVERIFIED |
| OOODIN Oilfield Solutions | Cypress | TX | — | ◇ UNVERIFIED |
| OMO&g Manufacturing LLC | Skiatook | OK | — | ◇ UNVERIFIED |
| ODOilfield Die Manufacturing Co | Lafayette | LA | — | ◇ UNVERIFIED |
| OEOilfield Equipment & Manufacturing, INC. | Shawnee | OK | — | ◇ UNVERIFIED |
| OSOil States Energy Services | Tyler | TX | — | ◇ UNVERIFIED |
| OSOil States Industries | Arlington | TX | — | ◇ UNVERIFIED |
| OOOmron Oilfield & Marine Services | Houston | TX | — | ◇ UNVERIFIED |
| ONO. Norheim Corporation | Douglassville | PA | — | ◇ UNVERIFIED |
| OPOn Point Construction Services, INC. | Dover | FL | — | ◇ UNVERIFIED |
| ODOrion Drilling Company, LLC | Corpus Christi | TX | — | ◇ UNVERIFIED |
| OGOsborn General Engineering and Construction INC | Auburn | CA | — | ◇ UNVERIFIED |
| OCOshkosh Corporation | Orrville | OH | — | ◇ UNVERIFIED |
| OCOta Compression LLC | Granbury | TX | — | ◇ UNVERIFIED |
| OPO-tex Pumping, L.l.c. | Duncan | OK | — | ◇ UNVERIFIED |
| OOtis | Orange | CA | — | ◇ UNVERIFIED |
| OLOwh LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| PLPacal LLC | Roseville | MN | — | ◇ UNVERIFIED |
| PEPace Engineering INC. | Willoughby | OH | — | ◇ UNVERIFIED |
| PAPacific Award Metals, INC. | Denver | CO | — | ◇ UNVERIFIED |
| PCPacific Clay Products INC | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| PEPacificorp Energy- Gadsby Power Plant | Salt Lake City | UT | — | ◇ UNVERIFIED |
| PPPackers Plus Energy Services (usa) INC | Charleston | WV | — | ◇ UNVERIFIED |
| PIPacseal INC | Brea | CA | — | ◇ UNVERIFIED |
| PAPaladin Attachments Ies LLC | Dexter | MI | — | ◇ UNVERIFIED |
| PMPalm Manufacturing and Sales | Grove City | MN | — | ◇ UNVERIFIED |
| PPPanther Products Corporation | Harrisonville | MO | — | ◇ UNVERIFIED |
| PMPape Material Handling INC. | Fremont | CA | — | ◇ UNVERIFIED |
| PUParex USA INC. | Riverside | CA | — | ◇ UNVERIFIED |
| PEPathfinder Energy Services | Katy | TX | — | ◇ UNVERIFIED |
| PIPax INC | Harrisburg | PA | — | ◇ UNVERIFIED |
| PRPayette Rock and Redimix LLC 00525 | Portable | ID | — | ◇ UNVERIFIED |
| PIPeak Innovations, Inc. | Fort Collins | CO | — | ◇ UNVERIFIED |
| PPPeer Properties 2, LLC | San Dimas | CA | — | ◇ UNVERIFIED |
| PAPengo Attachments | Cokato | MN | — | ◇ UNVERIFIED |
| PLPentucket Lake Condominiums | Haverhill | MA | — | ◇ UNVERIFIED |
| PEPetram Enterprises INC | Sheridan | OR | — | ◇ UNVERIFIED |
| PMPetroleum & Mining Hardmetals, INC. | Houston | TX | — | ◇ UNVERIFIED |
| PIPetrospect INC | Houston | TX | — | ◇ UNVERIFIED |
| PPPierce Pacific Manufacturing | Portland | OR | — | ◇ UNVERIFIED |
| PUPigs Unlimited International INC. | Tomball | TX | — | ◇ UNVERIFIED |
| PLPipe Line Unique Services LLC | Huffman | TX | — | ◇ UNVERIFIED |
| PMPivotal Mfg, LLC | Broussard | LA | — | ◇ UNVERIFIED |
