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• <br /> <br />1997 Production and Geologic Conditions <br />Approximately 650,000 tons of coal was produced from the mine in 1997 under Federal coal <br />leases C-37210 and C-53356. Production was sustained during the Srst 11 months of the year <br />and was curtailed during December due to quality and economic considerations. <br />Mining during 1997 entailed both panel advancement and pillaz extraction. Panels advanced were <br />IV South Submains and III West Submains. Pillar extraction occurred um the standing pillars of Y <br />Panel and II West Submaias. <br />Development of IV South Submains began in Mazch, 1997 and ended in June , 1997 due to poor <br />coal quality. No retreat mining occurred in these panel entries. <br />Development of III West Submains began in January, 1997 and ended in December, 1997 due to <br />poor coal quality. No retreat mining occurred in these panel entries. <br />Partial pillar extraction of Y Panel and II West Submains began in January, 1997 and continued <br />to Mazch, 1997. Pem~anent seals Gave now been constructed across II West Submains effectively <br />sealing Y Panel, II West Submains and IV South Submaias. <br />See Map No. 2-5 for the location of the mining performed during 1997. <br />Operation Unit Descriptions <br />Mined Length: <br />Overbwden Thiclmess: <br />Mining Height: <br />III West Submains: <br />Mined Length: <br />Overbwden Thiclmess: <br />Mining Height: <br />Approximately 1,500' <br />500' to 830' <br />8 to 10 feet on advance. <br />Approximately 4,000' <br />1,000'to 1,200' <br />8 to 10 feet on advance <br />• -1 <br />