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Fears grow about China 'earthquake lakes' sta -

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ELEANOR HALL: Two large aftershocks which have hit China's quake-affected areas overnight, have
raised fears about the stability of several massive "earthquake lakes" which threaten millions of
people if they break their banks.

The overnight tremors destroyed more than 420,000 homes and injured more than 60 people.

There have been no more reported casualties since the initial earthquake on May the 12th which
officials say killed more than 67,000 people.

But along with trying to head off the threat of a disease outbreak, China's military is working
around the clock to secure dozens of dams created by the earthquake, some of which are rising by
two meters a day, as Tanya Nolan reports.

TANYA NOLAN: A woman trudges up a steep path with a television strapped to her back. This is what
she could salvage after the massive earthquake destroyed her house and along with it, her village.

(Sound of a mountain crumbling)

The ominous sounds of a mountain slowly crumbling, follow her to her new home, a tent, on the other
side of the valley.

EARTHQUAKE VICTIM (translated): It's not possible to live there anymore, no way, the bottom of our
house has fallen away. We can't stay there anymore so we've moved.

TANYA NOLAN: A new lake has formed in this valley in Beichuan county. It's one of 35 created after
the earthquake struck two weeks ago, and some of them are rising to dangerously high levels.

A man watches Chinese soldiers working busily to ease pressure on one of these new lake's that's
formed on the Chaping River. It submerged his village and locals say it's been rising by more than
two meters a day.

BEICHUAN RESIDENT (translated): Before the earthquake the mountains were not like this at all, it
was only this mountain on this side and that one on that side. Now the quakes have pushed them to
meet each other, so the river is blocked.

TANYA NOLAN: But most of the work is centred around the fragile Tangjiashan "barrier lake" in
northern Sichuan province, formed after the Jianjiang River burst its banks, blocked by landslides.
A giant channel has been built and explosives are being used to help ease pressure on its banks.

More than 100,000 people have been evacuated from surrounding villages and officials say millions
more are at risk if the lake overflows. The safe areas around these mountains are running out.

SICHUAN PROVINCE RESIDENT (translated): We've been told that this is the safest place for us to
stay if one third of the water spills over the dam. But we will have to move further uphill if the
situation turns out to be worse.

TANYA NOLAN: Officials have another problem to keep at bay. Thousands of health workers have been
sent to the affected province to disinfect areas and stockpile vaccines for diseases such as
cholera and rabies.

The weather is working against them on both fronts, with forecasts for warmer temperatures and
thunderstorms. And it means reconstruction work cannot begin for sometime yet.

ELEANOR HALL: Tanya Nolan reporting.