sentences:  An initial assessment of the damage by one of the managers revealed both compartments of No 1 shaft and one of the compartments of No 2 Pit were blocked by the cages used to lower the miners.Rescue efforts were immediate, first by volunteers who were then aided by experienced miners from nearby colleries.By 3pm all the men in the Ell and Main Coals were evacuated and it was discovered that these coal seams were not damaged from the explosion.