EE WAS PUSHING ROCK WITH DOZER BLADE AND BACKED UP OVER A ROCK JERKING HIS BACK. HE WORKS NIGHT SHIFT SO I THINK IT WAS DARK AND HE JUST DIDN'T SEE THE ROCK. BY THE END IF THE SHIFT HE WAS HAV ING BACK PAIN. WENT TO DR. AND HE PUT HIM ON MEDICATION. SEE ATTACHED PAPER.