State media are reporting that 36 bodies have been recovered from a landslide in Tibet.

Thousands of workers have arrived on the scene to keep digging for the remaining bodies. According to the mining company who owns the site, 83 miners were buried in the slide. The landslide happened about 45 miles east of the Tibetan capital of Lhasa.

Because the disaster happened at 15,000 feet above sea level, several rescuers have had to be treated for altitude sickness. Also, the site is considered very unstable according to local police and there is a real fear of a second landslide.

It’s the third mining disaster in the last week in China. Six died and 11 are missing after an explosion at a coal mine where 28 miners were killed three days ago.