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TABLE 3-CONTINUED <br />BLASTING PARAMETERS -OVERBURDEN <br />C~ <br />Point of Initiation <br />wn Hole Delays <br />150ms <br />300 ms <br />450 ms <br />600 ms <br />750 ms <br />TYPICAL DELAY PATTERN <br />ROW BY ROW CAST <br />• <br />• <br />NOTE: All down hole <br />delays l~ 600ms. <br />L 65.90 ms delay <br />TYPICAL DELAY PATTERN <br />30° ECHELON CAST <br />~65ms 9or 17ms~ <br />Point of Initiation <br />