Most were being treated for injuries such as carbon monoxide poisoning and burns , CCTV reported . Chinese officials blamed poor management and inadequate precautions for an explosion . Explosion killed Four and hospitalized 104 others . December 2007 , 3,200 people were killed in mine accidents , state media said . 104 miners still trapped underground , state media reported .
Chinese officials blamed poor management and inadequate precautions for an explosion . Explosion killed Four and hospitalized 104 others . December 2007 , 3,200 people were killed in mine accidents , state media said . 104 miners still trapped underground , state media reported .