Laserfiche WebLink
sheet 1 of 2 <br />• <br />Permit/job # :C-82-057 <br />Abbreviation :none <br />Filename : C057-002 <br />Task description :Drill and Shoot South Wadge <br />CIRCES Cost Estimating Software <br />Task # : 002 State :Colorado <br />Date : 06/28/2004 County :Routt <br />User : JRS Site :Seneca li-W Mine <br />Agency or organization name :Colorado Division Of Minerals And <br />Permit or otherjob action :Permit Revision 04 <br />Blast area configuration df <br />Blasting method descriptic <br />Highwall or bench face any <br />Regraded slope angle <br />Highwall or bench length <br />Highwall or bench width (fi <br />Highwall or bench height ( <br />Depth to base of cut at hig <br />BLAST AREA VOLUMES <br />vertical line at base of desired cut on <br />~ pit floor to crest) <br />ill face <br />Total volume of dimensional mass to be shot <br />• Blast volume to subdrill grade and blast pattern lint <br />Blast volume to finish grade and blast pattern lines <br />Remaining volume required to be re-shot or ripped <br />L <br />BLAST AREA DESIGN <br />QUANTITY ~ UNIT <br />dge-shaped mass <br />a blast <br />0.50 h:1v <br />1.00 h:1v <br />10,800 eet <br />40 eet <br />110.0 eet <br />40.0 <br />QUANTITY feet <br />UNIT <br />180,000 cubic yard: <br />39,978 cubic yard: <br /> QUANTITY UNIT <br />Recommended blasthole diameter 5.33 inches <br />Selected blasthole diameter 9.00 inches <br />Subdrilling allowance 0.0 eet <br />Blasthole depth (avg. depth of holes on wedge-shaped mass) 20.0 feet <br />Density of rock verage Density R rock density <br />Burden to Charge Diameter Ratio 25 Imes diameter <br />Burden 19.0 eel <br />Spacing to Burden Ratio 1.1 imes burden <br />Spacing 21.0 eet <br />Cubic yards of rock per blasthole (avg. quantity per hole on wedge-shaped mass) 77.78 cubic yards <br />Powder factor description Medium rock strength <br />Powder factor 0.575 pounds/cu.yd. <br />Density of blasting agent 0.85 grams/cc <br />Quantity of explosives per blasthole (avg. quantity per hole on wedge-shaped mass) 44.72 ounds <br />Height of powder column per blasthole (avg. height per hole on wedge-shaped mass) 1.91 eel <br />Height of stemming per blasthole (avg. height per hole on wedge-shaped mass) 18.09 eel <br />Stemming to burden ratio (avg. ratio per hole on wedge-shaped mass} 0.95 times burden <br />Quantity of stemming per blasthole (avg. quantity per hole on wedge-shaped mass) 0.2980 cubic yards <br />Number of rows 1 rows <br />Number of blastholes per row 514 holes per row <br />Total number of blastholes 514 holes <br />Total length of all blastholes 10,280 eei <br />Pit <br />