China mine disaster: Dozens trapped by 'rock burst'

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Source: BBC News

Dozens of miners have been trapped in a coal mine in China after a "rock burst", officials say.

Four miners were killed and 57 are still missing after the accident, which happened late on Thursday in the city of Sanmenxia in Henan province.

State media reported that the rock burst - an explosion caused by the sudden release of built-up pressure - happened shortly after an earthquake.

Hundreds of Chinese miners die every year in pit accidents.

Read more: http://www.bbc.co.uk/news/world-asia-china-15587461