Injured miner receive treatment at a hosptial in Huada county, North China'S Inner Mongolia autonomous region, on Nov 20, 2011. A pit cave-in at the Yuanlin Coal Mine in Xianghuang Banner trapped 12 miners underground on Friday morning. It is reported that seven have been rescued and four were found dead. One miner remain missing. [Photo/provided for China Daily] 

Construction workers work on a bridge in front of a residential site in Shanghai Nov 20, 2011. [Photo/Agencies]