Authorities blamed an enormous, man-made mountain of soil and waste for the collapse of nearly three dozen buildings that left 81 people missing in southern China's most prominent manufacturing city. Rescuers excavating the mud-drenched mess pulled out one body early Tuesday, the landslide's first confirmed death.

Authorities said the landslide buried or damaged 33 buildings in the industrial park in Shenzhen, a city near Hong Kong that makes products ranging from cellphones to cars that are sold around the world.

Residents blamed the government while officials cited human error, with one ministry saying, "The pile was too big, the pile was too steep."

The landslide Sunday covered an area of 380,000 square meters (450,000 square yards) with silt 10 meters (33 feet) deep, authorities said. At least 16 people were hospitalized, including children, Xinhua said.

The official China News Service said the number of the missing people went down to 81, from previous day's 85, but did not explain how. The Shenzhen government said seven trapped people had been rescued.

The landslide is the fourth major disaster to strike China in a year following a deadly New Year's Eve stampede in Shanghai, the capsizing of a cruise ship in the Yangtze River and a massive explosion at a chemicals warehouse in Tianjin on the coast near Beijing.

Human error has been suspected or confirmed in all three previous disasters, pointing to a lack of regulatory oversight and an often callous attitude toward safety in China despite the threat of harsh penalties.

In Sunday's landslide, the Ministry of Land and Resources said a steep man-made mountain of dirt, cement chunks and other construction waste had been piled up against a 100-meter (330-foot) -high hill over the past two years.

Heavy rains in the region saturated the soil, making it heavy and unstable, and ultimately causing it to collapse with massive force.

"The pile was too big, the pile was too steep, leading to instability and collapse," the ministry said, adding that the original, natural hill remained intact.

Some residents blamed government negligence.

"If the government had taken proper measures in the first place, we would not have had this problem," said Chen Chengli.

Chen's neighbor, Yi Jimin, said the disaster wasn't an act of nature.

"Heavy rains and a collapse of a mountain are natural disasters, but this wasn't a natural disaster, this was man-made," Yi said.

Aerial photos from the microblog of the Public Security Ministry's Firefighting Bureau showed the area awash in a sea of red mud, with buildings either knocked on their side or collapsed entirely.

Posts on the microblog said the mud had filled many of the buildings, adding the chances of survival were "extremely small."

Cellphone camera video of the disaster on state broadcaster CCTV showed a massive wall of debris slamming into the buildings and sending up huge plumes of dust.

A man who runs a store selling cigarettes and alcohol less than a kilometer (a half mile) from the site said local residents had known that the pile of soil was dangerous and feared something bad would happen.

"We heard a sound like an explosion and then all we saw was smoke," said the man, who gave only his surname, Dong. "We knew what had happened immediately."

The damaged buildings included 14 factories, two office buildings, one cafeteria, three dormitories and 13 sheds or workshops, Shenzhen Deputy Mayor Liu Qingsheng told a news conference.

The Shenzhen government said 600 people had been relocated.

Nearly 3,000 people were involved in the rescue efforts, aided by 151 cranes, backhoes and other construction equipment, along with rescue dogs and specialized life-detecting equipment. (kes)

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