Oaks Colliery, which was one of the largest coal mines working the Barnsley area in South Yorkshire Coalfield, mined a seam that was notorious for firedamp. Almost 20 years before, on 5 March 1847, The Oaks colliery suffered its first disaster when a blast killed 73 men and boys. As mine management was aware of firedamp, there were strict rules about the use of safety lamps. A ventilation system was also used to carry any gas that emerged from the seam out of the mine. However the coal in this seam was known to contain methane making it a very dangerous working environment.

read more UrbEx Oak’s Colliery, Barnsley august 2014.