EE HAD EXITED THE ELEVATOR ON THE GROUND FLOOR & WAS CLOSING THE ELEVATOR DOORS BY PULLING DOWN ON A 2' LONG NYLON STRAP ATTACHED TO THE TOP HALF OF THE 2-PART DOOR. HE GRABBED THE END OF THE STRAP W/HIS RT HAND & PULLED DOWN HARD. DOOR HAD BEEN LUBRICATED EARLIER THAT DAY & WAS SLIDING MORE EASILY THAN NORMAL. THE DOORS CLOSED QUICKLY & HIS RT HAND MUST'VE SWUNG BTWN THE DOOR EDGE