History of coal miners inventiveness in clothing their families. Mining has always been dangerous, because of methane gas explosions, roof cave-ins, and the difficulty of mines rescue. The worst single disaster in British coal mining history was at Senghenydd in the South Wales coalfield. On the morning of 14 October 1913 an explosion and subsequent fire killed 436 men and boys. It followed a series of many extensive Mining accidents such as The Oaks explosion of 1866 and the Hartley Colliery Disaster of 1862. Most of the explosions were caused by firedamp ignitions followed by coal dust explosions. Deaths were mainly caused by carbon
Lakshmi Mittal government said it wanted to renegotiate the 2004 sale to ArcelorMittal. Employees of Mittal have accused him of "slave labour" conditions after multiple fatalities in his mines. During December 2004, twenty-three miners died in explosions in his mines in Kazakhstan caused by faulty gas detectors. In 2002 Plaid Cymru MP Adam Price obtained a letter written by Tony Blair to the Romanian Government in support of Mittal's LNM steel company, which was in the process of bidding to buy Romania's state-owned steel industry. This revelation caused controversy, because Mittal had given £125,000 to the British Labour Party the previous year.