Abstract: On July 7, 2010, Employee #1, of Hillside Manor Rehab and Extended Care Center LLC, was working in the engineering shop. Employee #2 was repairing a HVAC unit. Pressurized nitrogen was connected to the HVAC unit for the purpose of testing leaks. Employee #2 had just finished replacing the unit when the compressor exploded. Employee #2 was struck by flying metal debris and severely lacerated his left hand. Employee #2 was hospitalized. Employee #1 was not involved with the operation but was entering the work area. He was struck in the head and neck by flying metal debris from the explosion and was killed.