Polish mining authorities said on Saturday contact was lost with 10 miners following an underground tremor and a methane gas spill at the Borynia-Zofiowka mine in the south of the country.
Saturday’s crash at 3:40 a.m. happened some 900 meters underground. It was the second mine accident in just four days in the coal region around the town of Jastrzebie-Zdroj, near the Czech border.
Repeated methane explosions since Wednesday at the nearby Pniowek mine have left five people dead and seven missing and dozens injured. Both mines are operated by JSW.
The company said 52 workers were in the area of the tremor at the Borynia-Zofiowka mine and 42 of them were able to leave the shaft on their own. A rescue operation has been launched for the 10 missing miners.