150 years ago on Monday 6th December 1875, a terrible explosion ripped through the underground workings 230 yards beneath the surface at Swaithe Main Colliery, near Worsbrough, near Barnsley. A second explosion had also likely been triggered by the first.

239 men and boys were at work underground at the time, and altogether the disaster claimed 143 lives, although the specific cause was never ascertained.

The explosion killed horses and men, flame burning a number of victims and charring the wooden props, as well as blasting coal tubs (corves) and other debris and causing roof falls blocking parts of the workings. Two of the first rescuers also succombed to afterdamp.

We remember them and the real dangers of working the Barnsley Coal seam in the 19th Century, just as was worked at Hemingfield Colliery,  Lundhill and the Oaks which all saw disasters in the 1850s and 1860s.