premise: Wang is the acting head of Wangbolin District and Ning is Wang's deputy. Gong is the head of Lingshi County government and Feng is the deputy.
  
  These four people were removed from their posts in the Party according to regulations that stipulate officials in charge should be punished for fatal accidents, the spokesman said.
  Local governments are responsible for managing and supervising coal mining businesses and other production activities in areas under their jurisdiction, the spokesman said.
  The four people will face further punishments once investigations into the three accident are concluded, according to the spokesman.
  Explosive blast that occurred in the Pagou Coal Mine in Taiyuan's Wanbolin District on Oct. 24 left 11 miners dead. Preliminary investigations show that the mine was operating illegally because its production safety and coal mining certificates expired at the end of December last year.
   What caused the death of 11 miners?
hypothesis: Explosive blast that occurred in the Pagou Coal Mine