On March 10, 1906, a violent explosion devastated several pits belonging to the Courrières Mining Company in the Pas-de-Calais coalfield. The disaster affected the towns of Méricourt, Billy-Montigny, and Sallaumines, officially resulting in the deaths of 1,099 miners, although some estimate the actual number of victims could be as high as 1,200. It remains the worst mining disaster ever to occur in Europe.
A devastating explosion in the tunnels
On the morning of March 10, nearly 1,800 miners descended into the tunnels located more than 300 meters underground. Around 6:30 a.m., an extremely violent explosion occurred at a work site in the mine. It was probably triggered by the ignition of a pool of firedamp, a highly flammable gas present in coal mines.
The explosion immediately stirs up the coal dust accumulated in the tunnels. This dust, particularly explosive, ignites in turn, causing what miners call a "dust explosion." The flame then travels approximately 110 kilometers through the tunnels in less than two minutes, destroying everything in its path and transforming the tunnels into a veritable furnace.
The force of the impact was such that debris was thrown out of the shafts and surface installations were severely damaged. Deep in the mine, hundreds of workers were killed instantly or asphyxiated by the toxic gases that filled the tunnels.
A tragedy that shakes society
The announcement of the disaster sparked immense emotion in France and abroad. Thousands of families crowded around the wells hoping to find their loved ones. Rescue efforts were quickly organized, and specialized teams from Belgium and Germany joined the operations.
The search proved extremely difficult due to cave-ins, fires, and deadly gases. Three weeks after the explosion, thirteen miners managed to reach the surface after wandering for days through the tunnels. A final survivor was discovered a few days later, sparking immense hope among their families.
The mining company's handling of the disaster, however, sparked deep anger among the miners. Believing that rescue efforts had been halted too quickly, the workers in the coalfield launched a massive strike. Tens of thousands of miners mobilized, and tensions escalated to such a point that the government sent in the army to restore order.
