An interesting little snippet of info I came across whilst looking for other mining related material. Hopefully someone will benefit from it: -
Red Soil Mine, Derbyshire - The Derbyshire Courier announces the death of three men in the Red Soil Mine, at Sheldon, through the miners, in a rival concern, burning sulphur to drive out their opponents. The Duke of Devonshire has subscribed 100 guineas for the relief of the widows and orphans of the men who were sacrificed in the dispute between the proprietors.
Bristol Mercury - Saturday 14th September 1833.
Kind regards Tin Miner