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minimize ground vibration at future RCQ facilities (offices, quarry shop, secondary crusher, convey <br />system), track rock mass properties, emplace near field and far field seismograph locations. Define <br />blasting criteria (PPV, Frequency ranges) for production blast, trim blast, and modified production blast. <br />To identify better technique for production and critical areas such as close to Red Creek Canyon. <br />As reference, the following is an explanation of both techniques. Blast size, number of holes per row, <br />blast design, burden – spacing, blast fragmentation will be refine during the Developing stage. <br />- Trim blasting, Compare with a production blast are smaller in number of holes and tonnage, the <br />fully relieved face allows material to move away, and prevent blast energy from damaging the <br />final wall. Graph show blast patterns, production blast with a free face perpendicular to Red <br />Creek Canyon, after it is blast and clean expose a free face for trim blast to minimize vibrations <br />directed into the wall. <br /> <br /> <br /> <br />Section, showing final slope design and Red <br />Creek. Crest final quarry wall to berm 100ft <br /> <br />- Modified production blast pattern. It could combines pre splitting, air decking, reduced charge <br />weights near the final quarry wall by thirty to sixty percent, holes in colors close to the wall <br />could be loaded with less explosives. Thus, this blast pattern reduces the overall energy of the <br />blast and minimize impacts over the final quarry wall.