Seven construction workers were buried and killed after a cement tank collapsed Monday noon in southwest China's Guizhou Province, local authorities said. The accident occurred at 12 p.m. Monday at a construction site in Xingyi City in Qianxinan Prefecture, said Chen Gang, director of the prefecture's emergency response office. Rescue operations end at midnight Tuesday. The cause of the accident is still being investigated, Xinhua quoted the office as saying.
