EE WAS SHOVLING SAND FROM UNDER JAW CRUSHER, PREPARING TO MOVE. EE WAS INSIDE FRAME OF CURSHER. A JD 555 CRAWLER WAS BEING USED TO CLEAN UP LOOSE SAND FROM AROUND CRUSHER. WHILE DIGGING, CRAWL ER FORCED A ROCK UP INTO SHOVEL AND EE HAD HIS RIGHT HAND ON TOP OF SHOVEL, FORCING SHOVEL INTO FRAME, CATCHING HISRIGHT HAND BETWEEN FRAM OF CRUSHER AND TOP OF SHOVEL HANDLE.