Medical workers prepare to treat survivors in north China's Shanxi Province, Feb. 22, 2009. More than 70 miners have died after a coal mine blast occurred at about 2: 00 a.m. Sunday at the Tunlan Coal Mine of Shanxi Coking Coal Group in Gujiao City near Taiyuan, capital of north China's Shanxi Province, while rescuers are pulling out the trapped from the shaft, according to a rescuer at the site.