Methane explosions at a coal mine in southern Poland on Wednesday killed three miners, injured 20 and left seven others missing, authorities said.
The blasts took place in the early hours at the Pniowek mine in Pawlowice that is operated by the JSW mining company.
The immediate rescue operation had to be suspended because of a fire, JSW officials said.
Doctors say the condition of some of the injured is life-threatening.
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