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<br />Mine Area Toast wadce Pit <br />Project Nlwhwall Reduction <br />Task Drill 6 Shoot Highwall <br />40RKSHEET N0. YA-3 <br />OT XER RECLAMATION ACTIVITY COSTS <br />f ,, <br />u <br />• <br />Descriptions of Reclamation Activity; Blasting to reduce hi9hwall <br />Assumptions: Sources: <br />Powder Factor = 0.63 Ib/yd Seneca Costs for 7992 <br />Kole Diameter = 70-5/8 inches Furnished by applicant <br />Drill = Reed SK 60 Contractor's Equip. Cost <br />Drilling Rate = 2.0 ft/min. Guide Rate for 1992 <br />Bit Life = 8000 ft. Furnished by applicant <br />Bi[ Cast 51500/bit Furnished by applicant <br />Explosives = 50.15/lb. Seneca Costs for 1992 <br />Drilling Cost = 5230.37/hr. Contractor's Equip. Cost Guide <br />References: Dataquest, Contractor's Eauioment Cost Guide <br />U.S. Department of Labor, Devis•Bacon Wane Rates <br />25-3-3 <br />Revised 03/01/95 <br />