Emergency crews in northern China on Monday pulled three more bodies from the site of a weekend coal mine explosion, bringing the death toll to 63 with six people still missing, the government said. The blast occurred Saturday at the Xishui Colliery in Shuozhou, a city in Shanxi province, in a mine that had been ordered shut in November because of safety problems, the official Xinhua News Agency reported. "A preliminary investigation has found that the coal mine owners, disregarding the government's supervision, continued with coal production, causing the disaster," the agency said. Police have detained owners of the coal mine, Xinhua said.