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FIGURE 6 <br />Estimated Peak Ground Vibration <br />Rickert Property <br />U <br />N <br />~ 0. <br />c <br />.~' <br />0 <br />j 0. <br />U <br />c <br />0 <br />C7 <br />Y <br />~ ~. <br />D_ <br />0. <br />Z <br /> <br />1 <br />8 <br /> OSMRE STANDARD <br />6 <br />4 <br />GROUND VIBRATION LEVEL FROM MAXIMUM BLAST AT EXISTING QUARRY <br /> <br /> <br />2 GROUNp VIBR4TION EVEL FRO <br />M IMU BLA TAT W FLA S <br /> <br /> GROUND VIBRATION LEVEL FROM TYPICAL BLAST AT DOWE FLAT <br />D <br />10 15 20 25 <br />Years of Mining <br />-~-- Average Charge ~-- Maximum Charge <br />