A total of 83 miners were working in the Jiama Copper Polymetallic Mine when the avalanche struck in Maizhokunggar County, about 68 km from Tibet's capital Lhasa on Friday.
Over 4,500 rescuers and 200 machines were working at the site to find the buried miners, state-run Xinhua news agency quoted a spokesman with the rescue headquarters as saying.
Efforts are on to trace 47 other miners, they said.
Two bodies were found on Saturday and 15 more yesterday, and the search will continue "as long as there was a 1 per cent chance" of recovering bodies, China National Radio today quoted a rescue worker as saying.