Rescue workers implement urgent aid to those trapped in a scaffold-collpase accident at a construction site in Wuhu City, east China's Anhui Province, January 12, 2010. Seven workers were buried when scaffolding and a concrete roof collapsed at the construction site of Wuhu Huaqiang Culture and Technology Park on Tuesday. A rescue operation was underway and police were investigating the cause of the accident. [Xinhua]

A rescuer works at the scene of a collapse accident at the construction site of Wuhu Huaqiang Culture and Technology Park in Wuhu, east China's Anhui Province, January 12, 2010. Three workers were dead, seven injured and an unknown number of others were buried after a scaffold and a concrete roof collapsed at the construction site Tuesday, said local authorities. [Xinhua]