CREW WAS POURING CONCRETE LINER IN PRODUCTION SHAFT WHEN THE INJURED PARTY CLIMBED FROM THE BOTTOM DECK TO THE #2 DECK, APPROX. 15' TO RE-ALIGN THE SLICK LINE, HE PULLED LINE BACK INTO ALIGNME NT, HIS HANDS SLIPPED OFF THE LINE AND HE LOST HHI BALANCE, FALLING BACK DOWN THE LADDER WAY, LANDING ON THE LOWER DECK.