P.R. Engineering Limited, Heavy Machining, Welding and Babbitting P.R. Engineering Limited (PRE) performs heavy machining, welding and babbitting for a variety of heavy industrial needs. We also design and manufacture the Birdsboro Buchanan line of heavy duty double toggle primary jaw crushers. Our 45,000 sq. ft. manufacturing facility is equipped with machine tools and welding equipment capable of carrying out large custom fabricating and machining. We are also equipped with the latest CNC machine tools, welding and CAD/CAM technology to handle contract work. Our alliances with some of the la