Mexborough & Swinton Times – Friday 12 February 1892
The 11 seams intervening from the Shafton to the Barnsley seam above 1 ft in sickness, furnish an aggregate of 28’3” of coal as yet intact.
Adding the Barnsley seam to the square it is in work, the thickness of coal will be 37’11” for future working
The following is a list of the seams of coal sunk through at Denaby Main Colliery:
