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A. Stucki Company
Pittsburgh, PA
Ansaldo STS USA
Pittsburgh, PA
Brookville Equipment Corporation
Brookville, PA
CAM Innovation, Inc.
Hanover, PA
Cattron Group International
Sharpsville, PA
Clark Filter
Lancaster, PA
Control Chief Corporation
Bradford, PA
Dalko Resources Inc.
Sharpsville, PA
Ellwood National Crankshaft Group
Irvine, PA
Gasket Resources Inc.
Exton, PA
LTK Engineering Services
Ambler, PA
McConway & Torley LLC
Pittsburgh, PA
Norfolk Southern Thoroughbred Mechanical Services
Altoona, PA
Penn Locomotive Gear
Blairsville, PA
PHW Inc.
East Pittsburgh, PA
Portec Rail Products, Inc.
Pittsburgh, PA
PPG Protective and Marine Coatings
Pittsburgh, PA
Specialty Metal Products Co.
West Middlesex, PA
Standard Steel, LLC
Burnham, PA
Therm-Omega-Tech, Inc.
Warminster, PA
Voith Turbo Inc.
York, PA
Wabtec Corporation
Wilmerding, PA
Workhorse Rail, LLC
Pittsburgh, PA