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V = 0. 17 inches per second <br />All other precautions are to be taken to ensure that the holes are drilled correctly <br />and that the explosives are loaded properly. The proper burden distance must be utilized <br />and the powder factor must be sufficient to break and displace the rock. <br />Please feel free to contact me at anytime if you have questions. I hope that this <br />brief description of the proper blasting technique and predicted vibration levels will be <br />beneficial to you in permitting this property. <br />Thank you for contacting me and I will look forward to hearing from you soon. <br />Sincerely, <br />Rod A. Schuch <br />Engineer Special Projects <br />Buckley Powder Co.