Quake toll reaches 51,000

China said the death toll from last week's earthquake has topped 51,000 people with more than 29,000 still missing.

It comes as the stricken nation has vowed to deal severely with anyone found responsible for shoddy state building work.

Parents are demanding to know why the earthquake destroyed so many schools, killing thousands of children and leaving 247,000 people injured.

Ten days after the magnitude 7.9 quake rocked the mountainous Sichuan province in the southwest of the country, relief efforts focus on the 5 million homeless and the millions of others facing disease and possible "secondary disasters".

But aftershocks, heavy snow on mountain passes, rain and the threat of disease are complicating efforts.

Amazingly, rescuers are still finding survivors. A woman was pulled alive from a tunnel at a hydropower plant in the town of Hongbai.

Meanwhile, hundreds of distraught relatives placed wreaths along the road leading to Fuxing primary school in Wufu, where at least 127 children were crushed to death. They hoisted a banner reading, "The children did not die of a natural disaster but of an unsafe building."

"An answer must be given to our children," said Li Xiaoping, whose 11-year-old son was among the dead. "There is a problem with the buildings. All the buildings here did not collapse except for this one building."

Li Rongrong, who heads the state-owned Assets Supervision and Administration Commission and is in charge of overseeing China's huge state sector, said that generally construction companies under him were very good.

But he added: "If these buildings, which collapsed were built by major state-owned firms, we will take severe measures."

In Yinhua town, where more than 200 pupils died, a woman who lost her 13-year-old daughter said the school building had had two levels in 1993, but illegally added two more later.

"When it collapsed it was just fragments, not blocks. That shows how badly built it was," Luo Zaihong said.

A petition circulated in Juyuan town, where 500 or more pupils died in the ruined middle school, demanding punishment of those responsible for shoddy schools, and compensation.

Protests by parents could be troublesome as the ruling Communist Party seeks to maintain a staunch front of unity and stability in the wake of the quake.

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