EMPLOYEE WAS DUMPING MATERIAL INTO A SMALL DUMP TRUCK WITH A BOBCAT. WHILE RAISING THE BUCKET AND MOVING FORWARD TO DUMP, THE BOBCAT STARTED TO BUCK (ROCK BACK & FORTH), CAUSING THE BOBCAT TO TIP FORWARD. IT APPEARS THAT THE EMPLOYEE LET GO OF THE CONTROLS AND REACHED OUT, PLACING HIS HANDS ON THE SIDE OF THE DUMP BED. THE CAB OF THE BOBCAT THEN CAME DOWN ON THE EMPLOYEE'S HANDS.