Rescue teams have confirmed the death of one Polish coal miner and can see another miner trapped after an earthquake, but three others are still missing, the chief executive of mine owner JSW has said.
Daniel Ozon told reporters it will take a few hours for rescuers to reach the trapped miner that they can see.
It was not clear if the miner was dead or alive.
The 3.4 magnitude quake hit the Borynia-Zofiowka-Jastrzebie coal mine on Saturday morning, initially trapping seven miners at a depth of about 900m.
Two minors had been rescued by mid-afternoon on Saturday, and one was found late but showed no signs of life, the deputy chief executive of the mine owner JSW, Tomasz Sledz, told reporters.
He said the third miner was buried and that it was not yet possible for rescuers to confirm he was dead.
He said there had been no contact with the remaining miners.
The two rescued miners were taken to a hospital in Jastrzebie-Zdroj city in "relatively good condition" and could walk unaided, JSW Chief Executive Daniel Ozon told reporters.
"We are doing all we can to save the miners," he said.
There were about 250 people working in the mine at the time of the quake, JSW said.
The missing miners were from a team of 11 that was drilling a new tunnel.
Four escaped by themselves.
The 200-person rescue operation was earlier hampered by high levels of methane, which reached a concentration of up to 58%.
A spokeswoman for JSW, the European Union's largest coking coal producer, said earlier that the quake had damaged communications lines in the area.
Prime Minister Mateusz Morawiecki, who reached the mine on Saturday evening, said the rescue operation was very difficult and that he hoped the remaining miners would be saved.
He also visited the two rescued miners at the Jastrzebie-Zdroj hospital.
WUG said the quake was of a type that can occur in coalmines after the removal of deposits builds up tensions in the rocks.
Polish news agency PAP said family members of the missing miners had gathered at the mine and were being counselled by psychologists.
