EE WAS LOADING ROOF STRAPS ON A SCOOP AT THE TIME OF THIS INCIDENT. HE WAS PUTTING A CHAIN THROUGH A HOLE IN THE STRAPS WHEN THEY FELL OFF THE TRAILER, EE HAD A HOLD OF THE CHAIN & IT WAS CAU GHT IN THE STRAPS WHEN THEY FELL. THIS ACTION JERKED EE'S ARM CAUSING PAIN IN HIS LT. SHOULDER.