A PIECE OF DRAW SLATE(APPROX.1'X 1'X 2""THICK) FELL FROM THE ROOF AND STRUCK THE VICTIM ON THE LEFT FOREARM AND ELBOW. THE VICTIM WAS ENGAGED IN INSTALLING PERMANENT ROOF SUPPORTS IN THE FACE AREA WHEN THE ACCIDENT OCCURRED. VICTIM RE-PORTED EXPERIENCING PAIN IN HIS LEFT ARM AND LEFT ELBOW.