WHILE ATTEMPTING TO EXTINGUISH A FIRE AROUND THE HITCH AREA OF A 330M KOMATSU BELLY DUMP TRUCK THE EMPLOYEE SLIPPED AND FELL ON THE REAR DECK CAUSING A LACERATION TO HIS LEFT SHIN WHICH REQUIR ED 3 STITCHES. THE FIRE WAS EXTINGUISHED ON THE TRUCK WITHIN 10 MINUTES OF DISCOVERY.