CONSOL Energy (CEIX) - 2023 Q4 - Annual Report

Bailey Mine. As of December 31, 2023, the Bailey Mine's assigned and accessible reserve base contained an aggregate of 137.4 million tons of clean recoverable coal with an average as-received gross heat content of approximately 12,937 Btu per pound and an approximate average pounds of sulfur dioxide per mmBtu of 3.86. The Bailey Mine is the first mine developed at the Pennsylvania Mining Complex. Construction of the slope and initial air shaft began in 1982. The slope development reached the coal seam at a ...