Workers clean the body of the Three Gorges Dam in Yichang, Central China's Hubei province, April 14, 2011. More than 50 people began cleaning, polishing and painting about 80 square meters of the dam surface, to be completed by the end of June. The cleaning will also enhance the durability of the concrete to better protect the dam

Workers clean the body of the Three Gorges Dam in Yichang, Central China's Hubei province, April 14, 2011.

Workers clean the body of the Three Gorges Dam in Yichang, Central China's Hubei province, April 14, 2011.

Workers clean the body of the Three Gorges Dam in Yichang, Central China's Hubei province, April 14, 2011.

Source:China Daily