Chinese officials say that more than 400 dams and reservoirs near the epicenter of Monday's 7.9 earthquake have been damaged.
Relief efforts are being hampered as many of the more than 130,000 military troops that have been sent in to the Sichuan province are being diverted to repair the damage.
As workers continue to sift through piles of rubble to reach the tens of thousands believed to still be buried, hope is beginning to fade that many will be found alive.
The first foreign aid group to be allowed in to the areas hardest hit arrived Thursday from
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