At least 15 gold miners in a remote part of Siberia were killed Saturday when a dam collapsed on their encampment, per Russia's Ministry of Emergency Situations. Bloomberg and Reuters report that 13 people are still said to be missing after the early-morning calamity in the Krasnoyarsk region, which took place after a bout of heavy rains weakened the dam. Local officials tell the Interfax news agency that about 80 miners were sleeping in temporary shelters on-site, while an environmental watchdog notes that the dam wasn't registered and was illegal. The BBC notes that residents in a nearby village have been evacuated due to high water levels and flooding. A criminal investigation has been launched into possible safety violations at the site, which was tended to by miners employed by the private company Sibzoloto. (More Russia stories.)