- Progress Rail Svc
- Progress Rail Svc
- Progress Rail Svc
- Progress Rail Svc
- Progress Rail Svc
- Progress Rail Svc
- Progress Rail Svc
- Progress Railway Supplies Inc
- Progress Vanguard
- Progress Vanguard
- Quality Rail Svc
- R & H Enterprises
- R B Hornberger Co
- R I Locomotive Works
- R Mac Sales & Leasing
- R W Mac Co
- Racine Railroad Products
- Rail Bearing Svc
- Rail Bearing Svc
- Rail Bearing Svc
- Rail Car America
- Rail Car Washington
- Rail Switch Svc LLC
- Rail Systems Inc
- Rail Transit Consultants
- Rail Works Track Svc
- Railnet
- Railpro Inc
- Railquip Inc
- Railroad Material Salvage
- Railroad Materials Salvage
- Railroad Signal Svc Inc
- Railroad Signal Svc Inc
- Rails Co
- Railway Equipment & Supply Co
- Railway Equipment Svc
- Railway Intermediary Svc
- Railway Progress
- Railway Research Inc
- Rampart Range Corp
- Rampart Range Corp
- Ree Railroad Equipment Exchng
- Rescar
- Rescar Inc
- Rescar Inc
- Research & Development Div
- RLB Rail Svc
- RMI
- Rocky Mountain Transportation
- Russell Railway Supply
- S & K Steel Products Inc
- S & K Steel Products Inc
- Safe-Light Industry
- Salco Products
- Salco Products
- SEK Railroad
- Shelby Railroad Svc Inc
- Sierra Transport Grp Inc
- Signal & Comm Consultan Corp
- Signal & Comm Consultan Corp
- Signal & Comm Consultan Corp
- Snyder Equipment Co
- Somerville Tie Co
- Southeast Railroad Supply Co
- Southern System BMWE
- Sperry Rail Svc
- Sperry Rail Svc
- Stanley Railroad Products
- Steel Wheel LLC
- Steel Wheel Railway Supply
- Streamline Products
- Superior Sandblasting
- Syracuse International Trading
- Syracuse International Trading
- Track Tech
- Traintek Inc
- Trans Light Corp
- Trans-Global Solutions Inc
- Transdyne
- Transportation Products
- Transportation Resources Inc
- Transquip
- Transtechnik Corp USA
- Tri-Lateral & Sales
- Trinity Equipment Co
- Trinity Indusries Inc
- Trinity Industries Inc
- Triple Crown Svc
- Triple Crown Svc
- TTX Co
- TTX Co-Calpro Div
- Union Pacific Railroad Co
- Union Pacific Railroad Co
- Union Switch & Signal
- Union Switch & Signal
- Union Switch & Signal
- Union Switch & Signal
- Union Tank Car Co
- Union Tank Car Co
- Union Tank Car Co
- United Industries
- United Industries
- United Railroad Materials
- V & T Enterprises
- Vae Nortrak Irondale
- Vae Nortrak North America
- VAE Nortrak-Irondale
- Vicar Vaughn Ind Car & Equip
- Victory Railway Equipment Inc
- Victory Railway Equipment Inc
- Virginia City Rail Charter Cor
- WABCO Transit Div
- Wabtec Corp
- Wabtec Corp
- Wabtec Corp
- Wabtec Corp
- Wabtec Global Svc
- Wellington Industries Inc
- Western Railroad Mfg Inc
- Western Railway Devices Corp
- Western Railway Equipment Svc
- Wholesale Track Supply Co
- Wilro Corp
- Windy City Railway Svc
- Yangtzes Railroad
- Zef Tek