From previous ..

..nicolson had three full hours to dig the tunnel, but he emerged within  two hours without  being noticed, because  the prisoners were busy in the football field and not seeing around, he relocked  the store  room,  his clothes were not soiled, roger and josef were aware he had arranged  plastic coverings  to avoid dirtying his  clothes but his hair was  exposing  him ,he quickly sat down with his associates and snatching  the water bottle  from them poured it over his head and washed his face clean