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sheet 1 of 2 <br />I <br />Task # : 106 State :Colorado PermiUob # : G1981-010 <br />Date : 01/1 92 0 0 6 County :Mo11at Abbreviation :none <br />User: JHB SRe:TrapperMine Filename:C010-106 <br />Agency or organization name : Colorado Division Of Minerals 6 Geology <br />Permk or other job action : Tr-96 <br />Task description : Cast Blasf Ash Dump Highwall <br />Blast area <br />QUANTITY ~ UNIT <br />ige-shaped mass <br />Highwall or bench face angle ~ 0.71 ~h:1 v <br />rtlgnwan or panto lengrn :+,wv col <br />Highwall or bench width (from vertical line at base of desired cut on hghwall face) 105 t <br />Highwall or bench height (from pit floor to crest) 60.0 eet <br />Depth to base of cut at highwall face 35.0 eat <br />Total volume of <br />Blast volume to <br />Blast volume to <br />RI ACT AREA <br /> <br />I mass to be shot <br />le and blast pattern linE <br />and blast pattern lines <br />to be re-shot or ripped <br />QUANTITY I UNIT <br /> QUANTITY UNIT <br />Recommended blasthole diameter 4.67 inches <br />Selected blasthole diameter 10.62 inches <br />Subdrilling allowance 0.0 eat <br />Blasthole depth (avg. depth of holes on wedge-shaped mass) 21.7 eet <br />Density of'rock verage Density R rock density <br />Burden to Charge Diameter Ratio NA-user data imes diameter <br />Burden 30.0 eat <br />Spacing to Burden Ratio NA-user data 'mes burden <br />Spacing 30.0 eat <br />Cubic yards of rock per blasthole (avg, quantity per hole on wedge-shaped mass) 502.72 cubic yards <br />Powder factor description Cast blasting rock strength <br />Powder factor 2.150 pounds/w.yd. <br />Density of blasting agent 0.65 grams/cc <br />Quantity of explosives per blasthole (avg. quantity per hole on wedge-shaped mass) 1,080.84 ounds <br />Height of powder column per blasthole (avg. height per hole on wedge-shaped mass) 33.08 eet <br />Height of stemming per blasthole (avg. height per hole on wedge-shaped mass) -11.36 eat <br />Stemming to burden ratio (avg. ratio per hole on wedge-shaped mass) -0.38 imes burden <br />Quantity of stemming per blasthole (avg. quantity per hale on wedge-shaped mass) -0.2591 ubic yards <br />Number of rows 2 rows <br />Number of blastholes per row 166 holes per row <br />Total number of blastholes 332 holes <br />Total length of all blastholes 7,210 eat <br /> <br />CIRCES Cost Estimating Software <br />