BEIJING, June 21 (Xinhua) -- An explosion struck a coal mine early Monday in Weidong District, Pingdingshan City in central China's Henan Province, trapping at least 58 miners underground, the State Administration of Work Safety said in a statement.
The explosion occurred at the powder magazine of the Xingdong No.2 Mine around 1:40 a.m., the administration said Monday.
Two rescue teams have arrived and started rescue operation, the administration said.
The cause of the explosion is still unknown.
A low gas-concentration mine, the coal mine has an annual production capacity of 90,000 tonnes.
Luo Lin, chief of the State Administration of Work Safety, has led a working team to the scene to guide the rescue work, the administration said.