EMPLOYEE WAS BENT OVER FORWARD TRYING TO PUSH A 3"" THICK X 3' X 3' SLAB OF STONE ONTO A PALLET WHEN HE SUSTAINED A SHARP PAIN TO HIS LOWER BACK. CONDITIONS CONTRIBUTING TO THIS INJURY APPEAR TO BE OVEREXERTION BY THE EMPLOYEE. STONE OF THIS SIZE AND WEIGHT SHOULD BE MOVED BY MECHANICAL MEANS (10 LOST WORKDAYS).