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• Blast guards will be posted at all entrances to the property to make sure the access <br /> corridors through the active mining area are secure during the blast process. <br /> o Blast guards will be in contact with the lead blaster via CB radio on a <br /> channel to be determined at the time the site begins construction. Blast <br /> guards will have the authority to stop the blast at any time, up to the <br /> time when the blast is initiated. <br /> o In the case of an emergency blast guards will notify the lead blaster <br /> and stop the blast until the emergency situation is resolved. <br /> o Access corridors will only be secured for the length of time needed to <br /> successfully complete the blast. A typical length for a blast is less than <br /> 30 minutes. <br /> o At the completion of the blast, access corridors will be released for <br /> normal use. <br /> o The length of time the access corridors will be secured and guarded <br /> will be kept to a minimum and only done so to ensure the safety of all <br /> persons using them. <br /> • Audible blast signals, originating from a vehicle mounted siren, will be utilized <br /> according to the following schedule: <br /> 0 2 minutes before the blast— 15 second audible siren <br /> 0 30 seconds before blast—30 second audible siren <br /> • Once all personnel are accounted for, all blast guards are in place, and the blast <br /> area has been confirmed to be clear,the lead blaster will initiate the blast. <br /> Post Blast Inspection Procedures— <br /> After the blast is completed the lead blaster will re-enter the blast area and inspect the <br /> entire blast to make sure all holes were detonated.No one will be allowed back into the <br /> mining,plant, or shop areas until the lead blaster has inspected the blast and confirmed <br /> that it is safe to resume work. At this time: <br /> • The All Clear audible signal will sound—3 short audible siren blasts <br /> • Blast guards will release their blocks and the neighbor corridors will be open <br /> again for travel. <br /> • Personnel are allowed back to work. <br /> • Customers are allowed back to the product loading area. <br /> • Business returns to normal. <br /> Misfire Procedures— <br /> A misfire is the complete or partial failure of a blast hole to detonate as planned. With <br /> advancements in product quality and blast technology, misfires rarely happen, <br /> however in the event of a misfire the lead blaster will: <br /> • Not release the immediate blast area for return to work. <br /> • Wait 30 minutes before completing a more thorough investigation of the cause of <br /> the misfire. <br /> o Depending on the location of the blast,the lead blaster,at his <br /> discretion,can release areas not in the immediate area of the blast <br />