EMPLOYEE BACKED A 150 TON CATERPILLAR 785 ROCK TRUCK INTO THE FRONT OF A 85 TON KOMATSU 785-3 ROCK TRUCK KNOCKING INJURED TO THE GROUND. per call on 11-16-04, there were multiple serious injuries. Broken bones in head, neck, back, blood on brain, bruised lung, head lacerations- coder 12.