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DRILLING AND EXPLOSIVES PREPARATION TIME <br />Total Drilling Length: <br />20,764 <br />Unadjusted Drilling Rate: <br />82.00 <br />Drilling Time: <br />397.83 <br />Job Condition Corrections: <br />Site Altitude: <br />7,100 <br />Altitude Adjustment: <br />0.95 <br />Job Efficiency Factor: <br />0.67 <br />Adjusted Drilling Rate: <br />52.19 <br />Explosives Prep. Time: <br />250.27 <br />JOB TIME AND COST <br />linear feet <br />feet /hour <br />hours <br />feet <br />(DRMS est.) <br />(CH. Exc. HB) <br />feet /hour <br />hours <br />Total Job Time: 648.10 Hours <br />Unit cost: $2.256 per cu. yd. Total Job Cost: $441,081 <br />