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NOTE: Seismograph was set -up north of the office to monitor shot. Seismograph registered .12 <br />in /s @14HZ (particle blast) and .007 PSI @ 20HZ (air blast) at 4:30pm on April 29, 2013. <br />Hole Depth <br />High Explosives(lbs) <br />Blasting Agent (lbs) <br />booster) <br />NOTE: Seismograph was set -up north of the office to monitor shot. Seismograph registered .12 <br />in /s @14HZ (particle blast) and .007 PSI @ 20HZ (air blast) at 4:30pm on April 29, 2013. <br />