Polish miners blocked trains carrying coal to a power plant in the southern town of Laziska Gorne on Friday in protest against coal imports from Russia.
Poland generates most of its electricity from coal, but domestic coal production has been falling in recent years due to cost savings and geological problems, which prompted higher imports, mostly from Russia.
Some of Poland’s biggest coal users, mostly state-run energy groups, signed long-term deals for coal imports from Russia in 2017-2018 fearing the main domestic coal producer, state-run PGG would be unable to meet demand, unions say.