WHILE OPERATING A 988 CAT LOADER, EE OPENED RIGHT SIDE CAB WINDOW SO HE COULD ""SPIT"". WINDOW WAS NOT SECURED IN OPEN POSITION WHEN EE REACHED FOR WINDOW HANDLE, HIS HAND SLIPPED OFF & WINDOW S LAMMED SHUT, PINCHING HIS RIGHT INDEX FINGER. HE PULLED HIS FINGER FROM WINDOW CUTTING THE SKIN. ALL THIS TOOK PLACE WHILE MACHINE WAS IN FORWARD MOTION. 11 STITCHES REQUIRED.