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TR 99-33 - Face Extension, Gateroad and Associated Area Development, <br />Low Quality Coal Stockpile. Bond Reduction and Incidental Permit Boundary <br />Chanee <br />• <br />LOW QUALITY COAL STOCKPILE REGRADE <br />l.) ASSUMPTIONS <br />a. push material into adjacent pit <br />b. push is flat <br />c. average push distance is 700 feet <br />d. 400,000 tons or LCY to push <br />e. use a D I OR (5177.4G) <br />2.) PRODUCTION <br />a. unadjusted production - 375LCY/Iv <br />b. adjusted production - 322 LCYflv <br />c. adjustment factors <br />1. operator-0.75 <br />2. material consistency - l.2 <br />3. dozing medrod - l.2 <br />4. visibilit••- 1 <br />5. job efficiency - .83 <br />6. weight - 1. I5 (low quality coal 74 Ibs/cf) <br />3.) COST <br />a. 400000 LCY/322 LCYAv = 1242 Ivs. <br />b. 1242 hrs a 5177.46/Iv = <br />c. 17% Adm Fee = <br />d. Total = <br />4J BOND REDUCTION <br />a existing bond = <br />b. bond reduction = <br />TOTAL BOND REDUCTION FOR TR 99-33 = <br />• <br />5220,447 <br />37,476 <br />5257,923 <br />Ss 17,zoa <br />5259,284 <br />5259,284 <br />~1~~'I~~'Vr~ AUG 3 1 1999 <br />TR 99-33 <br />R1 <br />07/0l/99 <br />