Tarenni Colliery 1858, when the Primrose Colliery was owned by Morgan and Lewis, fumes of an engine boiler suffocated 14 men and boys, and 7 horses. According to HM Inspectorate of Mines and Quarries data, outside the Gwendraeth valley, Tarenni Colliery had the highest set of recorded incidents for coal damp and methane gas explosions. In total during its production lifetime, there were six outbursts in which three men lost their lives: one on 12 December 1914; two on 17 February 1941. On 1 November 1909, water from the abandoned Ynysgeinon pit caused the death of five miners at Tarenni No.2. On
William Galloway (mining engineer) Galloway had to attend as mining inspector. By 1923 he followed his family tradition by becoming an owner/director of collieries. He became the chairman and a director of the East Kent Colliery Company and director of the Snowdown Colliery. In 1870, Galloway began investigations into the cause of explosions in dry mines, and became convinced that the cause was coal dust as well as fire damp. He was called on, as a mining inspector, to investigate the causes of between 60 and 80 explosions in Scottish mines and it became his life's work to find ways to reduce the risk