Six jade scavengers died when a 150-foot cliff wall collapsed midday Sunday at a jade mine in Hpakant township of northern Myanmar’s Kachin state, a mining area where hundreds of lives have been lost in recent years, RFA reported.

“Six of nine jade scavengers died when the cliff collapsed,” township administrator Kyaw Swa Aung told RFA’s Myanmar Service. “It’s in an area between two old jade mining sites."

The victims were identified as residents from Hsenni in northern Shan state, Hopin township in southern Shan state, and Thabeikkyin of Mandalay region, he said.

At least 10 people have been killed this year by collapses and landslides at mining sites, according to Hpakant townships records.