A CUSTOMER DRIVER JUST HAD A LOAD OF SACK PUT ON HIS TRUCK. HE WAS INT HE PROCESS OF TYING DOWN THE SACKS. HE CLIMBED ONTO HIS TRALER. UNLOUD USE THE REQUIRED ALLEGESS LADDERS, TRIPPED AND FEL L BACKWARDS ONTO THE CONRETE. BROKE BOTH ARMS WRENCHED NECK AND BACK.