INJURED EMPLOYEE AND COWORKER WERE INSTALLING TWO MUFFLERS UNDERNEATH A CRANE. EMPLOYEES WERE LAYING ON THEIR BACKS. COWORKER WENT TO GET TOOLS. ONE MUFFLER CAME LOOSE AND FELL DOWN APPOX. 2 FT ONTO INJURED EMPLOYEE'S NOSE AND FACE. INJURED EMPLOYEE RECEIVED SMALL CUT AND SMALL CLOSED NOSE FRACTURE.