Two miners died Saturday of injuries sustained in last weekend's mine blast in eastern Ukraine, raising the death toll to 52, the emergencies ministry said.
Thirty six miners are still in hospital, including 11 in critical condition, an official said.
Many of the survivors are suffering from serious burns and head injuries.
Thirty-five corpses were brought to the surface after a methane explosion destroyed the Zasyadko pit last Sunday.
Ten miners who remained trapped in the pit were officially declared dead Wednesday and seven have died in hospital.
Rescue operations in the mine were brought to a halt Wednesday.
Zasyadko is one of Ukraine's largest mines and employs around 10,000 people. In 1999, 50 miners died there in a similar gas explosion.
Ukrainian authorities have ordered an enquiry into the causes of the disaster -- KIEV (AFP)
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