Thirteen miners were trapped underground and three others have been lifted out of shaft safely after a coal mine in northwest China's Gansu Province flooded Sunday, local authorities said. Sixteen miners were working down the shaft when the accident happened at the Jijitaizi Coal Mine in Jinta County, Jiuquan City, at 11: 30 a.m., Xinhua quoted the provincial work safety bureau as saying. The mine is under construction. Rescue operations are underway.