https://www.industryweek.com/the-economy/article/21962431/shale-gas-extraction-tax-free-in-poland-through-2020
Shale Gas Extraction Tax-Free in Poland Through 2020 | IndustryWeek
The Polish government decides to make it tax-free to extract shale gas at home through 2020, as the EU member strives to ensure energy independence from Russia.
shale gasextraction taxin polandfree2020