Several dead, dozens missing in China mine collapse

STORY: The collapse on Wednesday at an open-pit mine in the Alxa League operated by Xinjing Coal Mining Co left a pile of debris roughly 500 m (550 yards) across and an estimated 80 m high, state media reported.

Three hundred fire rescue personnel, 60 fire engines and 6 search and rescue dogs were at the scene on Thursday to aid the search for trapped miners, state media said.

Coal is a major source of energy in China but its mines are among the world's deadliest, largely due to lax enforcement of safety standards, despite repeated government orders for improvements in safety over the years.