| MWMatthews Welding L.L.C. | Athens | PA | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| MPMcguckin & Pyle, INC. | Downingtown | PA | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| MCMcmurray Cooling and Heating INC. | Venetia | PA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| MMMegnin Mills, INC. | Kittanning | PA | Machinery Manufacturing333243 | — | ◇ UNVERIFIED |
| MIMenold, INC | Essington | PA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| MIMetadyne, INC | Towanda | PA | Machinery Manufacturing333131 | — | ◇ UNVERIFIED |
| MSMetal Solutions INC | Vandergrift | PA | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| MTMet-pro Technologies, LLC | Telford | PA | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| MCMhs Conveyor | Northampton | PA | Machinery Manufacturing333922 | — | ◇ UNVERIFIED |
| MRMichael Runk, Pamela Runk, Duane Runk Excavating | Broad Top | PA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| MLMjtek LLC | Latrobe | PA | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| MCModel Cleaners/charleroi | Charleroi | PA | Machinery Manufacturing333414 | — | ◇ UNVERIFIED |
| MTMoon Tool & Die Company, INC | Meadville | PA | Machinery Manufacturing333220 | — | ◇ UNVERIFIED |
| MEMorgan Engineering Systems INC. | Brackenridge | PA | Machinery Manufacturing333298 | — | ◇ UNVERIFIED |
| MRM-tec Robotic Welding | Washington | PA | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| MWMtr Wholesale Inc | Greensburg | PA | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| NWNational Welding Alloys (natweld) | Sharpsburg | PA | Machinery Manufacturing333518 | — | ◇ UNVERIFIED |
| NLNcl Landscaping | Carnegie | PA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| NNNorse Naturals | Lancaster | PA | Machinery Manufacturing333991 | — | ◇ UNVERIFIED |
| NENortheast Equipment, INC. | Dallas | PA | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| NPNortheast Philadelphia Airport Federal Aviation Administration | Philadelphia | PA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| ONO. Norheim Corporation | Douglassville | PA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| PMPendu Manufacturing | Laceyville | PA | Machinery Manufacturing333210 | — | ◇ UNVERIFIED |
| PMPenn Mould Industries INC | Washington | PA | Machinery Manufacturing333511 | — | ◇ UNVERIFIED |
| PPPenn Pump & Equipment Company, INC. | Hatfield | PA | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| PRPenn Refrigeration Service | Wilkes Barre | PA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| PHPhares Hurst | Navron | PA | Machinery Manufacturing333112 | — | ◇ UNVERIFIED |
| PAPittsburgh Annealing Box CO | Mc Kees Rocks | PA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| PCPlum Creek Farm LLC | Bernville | PA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| PEPoleset Equipment LLC | Prosperity | PA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| PCPolymer Contours, INC. | Allentown | PA | Machinery Manufacturing333511 | — | ◇ UNVERIFIED |
| PEPowell Electro Systems LLC | West Grove | PA | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| PMPrecision Matthew Machinery Warehouse Expansion | North Fayette, Township of | PA | Machinery Manufacturing333310 | — | ◇ UNVERIFIED |
| PPPremium Plastic Solutions, LLC. | Latrobe | PA | Machinery Manufacturing333511 | — | ◇ UNVERIFIED |
| PTProgressive Tool & Die, INC. | Meadville | PA | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| PMPSS Manufacturing Company | Denver | PA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| PFPtaks Formal Wear Inc/uniontown | Uniontown | PA | Machinery Manufacturing333512 | — | ◇ UNVERIFIED |
| PIPtc-in-liquidation, INC. | Saegertown | PA | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| PPPTG Properties, LLC | Meadville | PA | Machinery Manufacturing333511 | — | ◇ UNVERIFIED |
| PWPump Warehouse Company | Quakertown | PA | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| QTQuality Tool & Die, INC. | Meadville | PA | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| RMRapid Mold Solutions, INC. | Erie | PA | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| RRRapid Reaction, INC. | Franklin | PA | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| RTRearick Tooling INC. | Apollo | PA | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| RDReworld Delaware Valley Lp/delaware Valley Res Rec | Chester | PA | Machinery Manufacturing333922 | — | ◇ UNVERIFIED |
| RRRoad Restoration Project | Conyngham, Township of | PA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| RIRoberts Industries, INC. | Coatesville | PA | Machinery Manufacturing333318 | — | ◇ UNVERIFIED |
 Roberts Welding Services LLC | Sayre | PA | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| RRRobinison Racing Production | Dublin | PA | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| RMRoss Mould Llc/washington City | Washington | PA | Machinery Manufacturing333511 | — | ◇ UNVERIFIED |
