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Surface Blasting Work Cont'd Task#004 Page 3 of 3 <br /> Total Materials Cost: $2,391.68 <br /> DRILLING AND EXPLOSIVES PREPARATION TIME <br /> Total Drilling Length: 264 linear feet <br /> Unadjusted Drilling Rate: 187.00 feet/hour <br /> Drilling Time: 2.22 hours <br /> Job Condition Corrections: <br /> Site Altitude: 5,700 feet <br /> Altitude Adjustment: 0.95 (DBMS est.) <br /> Job Efficiency Factor: 0.67 (CH.Exc.HB) <br /> Adjusted Drilling Rate: 119.03 feet/hour <br /> Explosives Prep. Time: 10.24 hours <br /> JOB TIME AND COST <br /> Total Job Time: 12.46 Hours <br /> Unit cost: $3.931 per cu.yd. Total Job Cost: $6,813 <br /> CIRCES Cost Estimating Software <br />