PM Mateusz Morawiecki on Monday in Katowice, southern Poland, commemorated the 38th anniversary of the December 1981 Wujek massacre, in which communist riot police killed nine protesting miners in the city's Wujek coal mine.
One miner has died and 16 were injured following a tremor in the Bielszowice coal mine, south Poland, on Thursday, PAP was told by the mine owner, the Polish Mining Group (PGG).
Three miners died as a result of a strong tremor in the Murcki-Staszic coal mine in Katowice, south Poland, on Monday. Six other miners are already in hospital, the Polish Mining Group (PGG), the mine owner, said in a statement.
The tunnel, 40 metres underground and started in 1799, is the latest attraction in a process that has seen Zabrze repurpose its former coal mining infrastructure for tourism. The whole tour takes 2.5 hours, most of which is on foot and the journey finishes with a 30-minute boat ride.
Rescuers are searching for three miners after the Zofiowka mine in Jastrzebie-Zdroj, southern Poland, caved in on Saturday following a series of underground tremors.