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u <br />TABLE 56 <br />Blasting Parameters - Overburden <br /> <br />r1 <br />Explosive Material <br />Hole Depth <br />Hole Diameter <br />Hole Stemming <br />Powder Column <br />Pounds of Powder Per Hole <br />(ANFO Density @ 0.85 gm/cc) <br />Powder Factor <br />Bank Cubic Yards Per Hole <br />Drilling Pattern <br />Primer <br />ANFO or Water Proof Slurry <br />14 ft. <br />2~S inches <br />3 ft. <br />11 ft. <br />20 lbs. <br />0.61 lb/BCY <br />33 BCY <br />8 ft. x 0 ft. <br />1>y" x 8" stick dynamite <br />3~ STEMMING <br />III ANFO <br />PRIMER <br />TYPICAL POWDER COLUMN <br />9 MS DELAY <br />TYPICAL DELAY PATTERN <br />