LOADER BOOM HIT HAULER BED WHILE LOAIDNG HAULER. THIS CAUSED THE HAULER OPERATOR TO BE JERKED SIDEWAYS WHILE INT HE OPERATORS SEAT HE COMPLAINED OF BACK PAIN AND WAS SEEN BY A DR. DR SAID POSS IBLE PULLED MUSCLE AND RETURNED HIM TO WORK. ON JUNE 13TH HE RETURNED TO THE DR MRI BEEN OF WORK SINCE JUNE 14TH.