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• 2 minutes before the blast- 15 second audible siren <br /> • 30 seconds before blast- 30 second audible siren <br /> Once all personnel are accounted for, all blast guards are in place, and the blast area has been <br /> confirmed to be clear, the lead blaster will initiate the blast. <br /> 12. Post Blast Inspection Procedures <br /> After the blast is completed, the lead blaster will re-enter the blast area and inspect the entire <br /> blast to make sure all holes were detonated. No one will be allowed back into the mining, <br /> processing, or other active areas until the lead blaster has inspected the blast and confirmed that <br /> it is safe to resume work. At this time the `All Clear' audible signal will sound - 3 short audible <br /> siren blasts and blast guards will release their blocks and corridors will be open again for travel. <br /> Personnel will then be allowed back to work and customers will be allowed back to the product <br /> loading area while business returns to normal. <br /> 13. 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; however, in the <br /> event of a misfire the lead blaster will not release the immediate blast area for return to work. <br /> The lead blaster will wait 30 minutes before completing a more thorough investigation of the <br /> cause of the misfire. Depending on the location of the blast, the lead blaster, at his discretion, can <br /> release areas not in the immediate area of the blast while waiting the required 30 minutes. This <br /> may include the access corridors and other facilities on the site. <br /> If the investigation reveals the detonator can be re-used and re-shot, the blast area will be cleared <br /> again, blast guards reestablished, the blast warning procedure will be reinitiated, and the <br /> detonator blasted. If the detonator cannot be re-used and blasted,the area will be secured, and all <br /> mining personnel warned of the hazard. The area will be carefully excavated under the <br /> supervision of the lead blaster or Quarry Manager until the blasting cap and booster are located. <br /> Young Ranch Resource November 2020 18 Cn7;IAwtcki and As,ociatm YLIA' <br />