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sheet 1 of 2 <br />Task # : 002 State :Colorado rermmlw s : ~-ryawar <br />Date : 03N12006 County :Roust Abbreviation :none <br />User : JRS Site :Seneca li-W Filename :C057-002 <br />Agency or organization name :Colorado Division Ol'Minerals And Geology <br />Permit or otherjob action :Permit Renews! 04 <br />Task description :Drill and Shoot South Wedge Pit Hlghwall <br /> <br />° - ~ - - - - QUANTITY UNIT <br />Blast area configurefion description Wedge-shaped mass <br />Blasgng method description Cest blast <br /> 0.50 h:tv <br />Hlghwall or bends face angle <br /> t.00 h:tv <br />Regraded slope angle <br /> 5'250 eel <br />Highwall or bench length <br />Highwall or bench width (from vertical line at base of desired cut on higtrvrall face) 40 eel <br />l <br />Highwall or bench height (from pit floor fo crest) 110.0 ee <br />Depth to base of crd al higtwrall face 40 0 et <br />' <br />' <br />h "° x:' h z <br /> <br />s z., ,._ ..._. <br />fi <br /> <br />s s <br />- s <br />BLAST AREA VOLUMES <br />Total volume of dimensional mass co oe <br />Blast volume to subdrill grade and blast F <br />Blast volume to finish grade and blast pal <br />Remaining volume re4uired to be re-shot <br />lines <br />QUANTITY <br />151 <br />°~ QUANTITY UNIT <br />Recommended biasthole diameter 5.88 inches <br />Selected blasthcle diameter 9.87 inches <br />Subdrtlling allowance 8.3 eet <br />Blasthole depth (avg. depth of holes onwedge-shaped mass) 28.3 eet <br />Density of rods verage Density R rock density <br />Burden to Charge Diameter Ratio 25 'mes diameter <br />Burden 21.0 eet <br />Spawn to Burden Ratio 1.1 Imes burden <br />Spacing 23.0 eat <br />Cubic yards of rock per biasthole (avg. quantity per hole on wedge-shaped mass) 147.30 bic yards <br />Powder factor description Medium rock strength <br />Powder factor <br />0.575 <br />poundsla.yd. <br />Density of blasting agent 0.85 rams/cc <br />Quantity of explosives per biasthole (avg. quantity par hole an vn:dge-shaped mass} ERR ourrds <br />Height of powder column per biasthole (avg. height per hole on wedge-shaped mass) 3.00 feet <br />Heigh of stemming per biasthole (avg. height per hole onwedge-shaped mass) 23.30 eat <br />Stemming to burden ratio (avg. ratio per hole on wedge-shaped mass) 1.11 mes burden <br />Quantity of stemming per biasthole (avg. quantlry per hole onwedge-shaped mass) ERR cubic yards <br />Number of rows 0 rows <br />Number of blastholes per row 228 holes per row <br />Total number of blastholes 0 holes <br />Total length of all 6lasthcles 5 996 of <br /> <br />CIRCES Cost Estimating Software <br />