4 Dead 57 Trapped In China Coal Mine Rock Blast

Occured a rock explosion that followed a small earthquake, it caused  57 miner were trapped and 4 miners were killed in a coal mine in the city of Sanmexia in Henan Province. It happened Thursday evening when 75 miners were working in the shaft. Approximately 200 workers were making a small hole about 500 meters deep to rescue the trapped miners

A magnitude -2,9 earthquake happened to the east of Sanmexia and rock explosion occured about 30 minutes later.  That is a phenomenon calls “rock burst”, occurs when settling layer of earth go down on the walls of mine and it ensues suddenly. It explosion can turn chunks of rock into something deadly and the shock waves can be lethal.The survivor from rock burst depends on the intensity of the rock explosion and skill of rescuers  to make ventilation to them. 

The Yima city Communist Party`s head of propaganda said that if it had been not very strong, it might have cause the tunnel to get narrower, but they might still be able to send some air in there to ensure ventilation.

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