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I <br />CIRCES Cost Estimating Software <br />PROJECT IDENTIFICATION <br />sheet 1 of 2 <br />Task # : 250 State :Colorado Pennitfjob # : C1981-010 <br />Date : 11/16/2005 County :Moffat Abbreviation : none <br />User: JHB Site :Trapper Mine Filename: C010.250 <br />Agency or organization name :Colorado Division 0l Minerals And Geology <br />Permit or other job action : Tr-96 <br />Task description :Cast Blast G•test pit <br />,,.,. > <br />_., <br />, <br />BLAST AREA DIMENSIONS <br /> QUANTITY UNIT <br />Blast area configuration description Wedge-shaped mass <br />Blasting method description Cast blast <br />Hichwell or bench face angle 0.71 h:1v <br />all or bench width (from vertical line at base of <br />all or bench height (from pft floor to crest) <br />to base of cut at highwall face <br />Total volume of dimensional mass to be shot <br />Blast volume to subddll grade and blast pattem lines <br />Blast volume to finish grade and blast pattem lines <br />Remaininc volume required to be re-shot or doped <br />Recommended blasthole diameter <br />Selected blasthole diameter <br />Blasthole depth (avg. depth of holes on wedge shaped mass) <br />Density of rock <br />Burden to Charge Diameter Ratio <br />Burden <br />Spacing to Burden Ratio <br />Spacng <br />Cubic yards of rock per blasthole (avg. quantity per hole on we <br />Powder factor description <br />Powder factor <br />Density of blasting agent <br />Quantity of explosives per blasthole (avg. quantity per hole on ~ <br />Height of powtler column per blasthole {avg. height per hole on <br />Height of stemming per blasthole (avg. height per hole on wedc <br />Stemming to burden ratio (avg, ratio per hole on wedge-shaped <br />Quantity of stemming per blasthole (avg. quantity per hole on w <br />Number of rows <br />Number of blastholes per row <br />Total number of blastholes <br />Total lenbth of all blastholes <br />60.0 feet <br />30.0 Feet <br />~UANTI7Y UNIT <br />30,533 bicyards <br />27,758 bicyards <br />27,758 bicyards <br />2,777 bicyards <br />;: <br />~UANTtTY UNIT <br />4.00 'ndles <br />10.62 inches <br />0.0 eet <br />13.9 eet <br />Est blasting (AN rods density <br />20 imes diameter <br />18.0 eet <br />1.1 imes burden <br />20.0 eet <br />173.48 bic yards <br />Cast blasting rock strength <br />2.150 oounds/cu.vd. <br />11.42 <br />2.48 <br />0.14 <br />0.0567 <br />4 <br />40 <br />160 <br />burden <br />row <br />