Rescue 141 was requested to assist Station 25 on an MVA with Rescue on Hamilton Blvd in Upper Macungie Twsp.  Rescue 141 responded within minutes with a crew of 7.  Unit arrived on scene and found a 2 vehicle MVA with a box truck on its side with one male still trapped.  The crew immediately went to work attempting to gain access to the cargo compartment of a box truck to remove items that had shifted and were trapping the patient when the vehicle rolled over.  The crew utilized a combi tool, champion cutter and a sawzall.  While station 1 crew work at this task the 25 crew work to gain access to the patient through the roof.  Pt extrication took aprox. 30 minutes due to heavy damage and a difficult extrication.  After extrication was complete the crew assisted with clean up.  Station 1 Fire Police were also on scene assisting with traffic control.