| MIMae-eitel, INC | Orwigsburg | PA | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| MMMal-ber Manufacturing CO. | Huntingdon Valley | PA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| MTMarlan Tool | Meadville | PA | Machinery Manufacturing333511 | 1-19 | ◐ LIKELY ACTIVE |
| MSMartin Sprocket & Gear 12 | Danielsville | PA | Machinery Manufacturing333613 | 20-99 | ◐ LIKELY ACTIVE |
| MTMatrix Tool, INC. | Fairview | PA | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| MCMcKee Carbide Tool Company | Olanta | PA | Machinery Manufacturing333319 | 1-19 | ◐ LIKELY ACTIVE |
| MIMedart, INC. | Ellwood City | PA | Machinery Manufacturing333519 | 20-99 | ◐ LIKELY ACTIVE |
| MMMicro Mold | Erie | PA | Machinery Manufacturing333511 | 20-99 | ◐ LIKELY ACTIVE |
| MCMorris Coupling Company | Erie | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PPPace Precision Prod | Dubois | PA | Machinery Manufacturing333511 | — | ◐ LIKELY ACTIVE |
| PMPendu Manufacturing, INC. | New Holland | PA | Machinery Manufacturing333210 | 20-99 | ◐ LIKELY ACTIVE |
| PMPenn Machine Company LLC PLG | Blairsville | PA | Machinery Manufacturing333612 | 1-19 | ◐ LIKELY ACTIVE |
Penn United Technologies, Inc (Building 10 Location) | Sarver | PA | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| PGPeoples Gas CO Llc/kinter Sta | Indiana | PA | Machinery Manufacturing333500 | — | ◐ LIKELY ACTIVE |
| PHPine Hill Ind Park | Carlisle | PA | Machinery Manufacturing333248 | — | ◐ LIKELY ACTIVE |
| PIPlastikos, INC. | Erie | PA | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| RMRad Mfg Llc/nescopeck | Nescopeck | PA | Machinery Manufacturing333924 | — | ◐ LIKELY ACTIVE |
| RNReiff & Nestor/lykens | Lykens | PA | Machinery Manufacturing333512 | — | ◐ LIKELY ACTIVE |
| REReliable Equipment Manufacturing Building 101 | Ivyland | PA | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| RRRepublic Refrigeration, INC. | Allentown | PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| SKSafety Kleen Sys INC - West Chester Facility | West Chester | PA | Machinery Manufacturing333298 | — | ◐ LIKELY ACTIVE |
| SESchindler Elevator CORP | Hanover | PA | Machinery Manufacturing333921 | — | ◐ LIKELY ACTIVE |
| SPShippensburg Pump Company Incorporated | Shippensburg | PA | Machinery Manufacturing333911 | 20-99 | ◐ LIKELY ACTIVE |
| SPSpringfield Pike Quarry | Connellsville | PA | Machinery Manufacturing333314 | — | ◐ LIKELY ACTIVE |
| STSpx Thermal Product Solutions | New Columbia | PA | Machinery Manufacturing333994 | — | ◐ LIKELY ACTIVE |
| SRSynagro [philadelphia Renewable Bio-fuels Llc] | University City (subdivision) | PA | Machinery Manufacturing333994 | — | ◐ LIKELY ACTIVE |
| TWT.b. Wood's INC. | Chambersburg | PA | Machinery Manufacturing333613 | 100-499 | ◐ LIKELY ACTIVE |
| TETexas Eastern Trans Lp/bedford Sta | Bedford | PA | Machinery Manufacturing333319 | — | ◐ LIKELY ACTIVE |
| TEThe Esab Group, INC. | Hanover | PA | Primary Metal Manufacturing331491 | — | ◐ LIKELY ACTIVE |
| TSThermal Solutions Products, LLC | Lancaster | PA | Fabricated Metal Product Manufacturing332410 | 20-99 | ◐ LIKELY ACTIVE |
| TITri-tech Injection Molding, INC. | Mckean | PA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| TTTurbo Technologies, INC. | Beaver Falls | PA | Machinery Manufacturing333112 | — | ◐ LIKELY ACTIVE |
| UPUltra Precision | Freeport | PA | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| VPVeeco Process Equipment INC. | Horsham | PA | Machinery Manufacturing333242 | — | ▲ REPORTED CLOSED |
| VTView Thru Technologies, INC. | Quakertown | PA | Plastics and Rubber Products Manufacturing326130 | 20-99 | ◐ LIKELY ACTIVE |
| VMVista Metals/kittanning Plt | Kittanning | PA | Machinery Manufacturing333511 | — | ◐ LIKELY ACTIVE |
| WUWabtec US Rail Grove City Engine/mercer | Grove City | PA | Machinery Manufacturing333618 | — | ◐ LIKELY ACTIVE |
| WIWeaver Ind Inc/denver | Denver | PA | Machinery Manufacturing333248 | — | ◐ LIKELY ACTIVE |
| WTWestfalia Technologies, Incorporated | York | PA | Machinery Manufacturing333922 | 100-499 | ◐ LIKELY ACTIVE |
| WLWhisler Laundry & Dry Clnr | Hanover | PA | Machinery Manufacturing333992 | — | ◐ LIKELY ACTIVE |
| WIWhite-brook, INC. | Brookville | PA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| ABAltoona Beasley Mfg/altoona | Altoona | PA | Machinery Manufacturing333512 | — | ◐ LIKELY ACTIVE |
| BRBucyrus Railcar Repair New Castle | New Castle | PA | Machinery Manufacturing333911 | — | ◐ LIKELY ACTIVE |
| CCCamelot Clnr/lebanon | Lebanon | PA | Machinery Manufacturing333611 | — | ◐ LIKELY ACTIVE |
| CCCaterpillar Const Equip Mfg | York | PA | Machinery Manufacturing333120 | — | ◐ LIKELY ACTIVE |
| CBCleveland Bros Equip CO Inc/camp Hill | Camp Hill | PA | Machinery Manufacturing333120 | — | ◐ LIKELY ACTIVE |
| CGColumbia Gas Trans Llc/artemas Comp Sta | Artemas | PA | Machinery Manufacturing333294 | — | ◐ LIKELY ACTIVE |
| CRConway Rail Yrd | Conway | PA | Machinery Manufacturing333914 | — | ◐ LIKELY ACTIVE |
| EOExxonmobil Oil CORP Harrisburg Terminal | Harrisburg | PA | Machinery Manufacturing333132 | — | ◐ LIKELY ACTIVE |
| FMFarm-bilt Machine LLC | Gap | PA | Machinery Manufacturing333111 | — | ◐ LIKELY ACTIVE |