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New borehole data (from boreholes drilled after 2014) and reinterpretation of historical well logs enabled to update the acreage and reserve potential of Upper Permian (Zechstein) stratiform potash-bearing deposits in SW Poland (Fore-Sudetic area). These deposits, referred to as the Older Potash (K2) and the Younger Potash (K3), are included in the Stassfurt (Z2) and Leine (Z3) cyclothems. Within...