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10.0 1 T T I T T i , 1 T T T T . , , <br /> r, r <br /> ■ r <br /> • r <br /> r r <br /> • 2 in/sec • <br /> N � <br /> ›' 0.008 in <br /> O 1.0 ^. <br /> W 0.75 in/sec, <br /> > Drywall • <br /> W / r <br /> J <br /> 0.50 in/sec, ,,I <br /> plaster �♦ <br /> tr <br /> a 0.030 In ; <br /> .t <br /> 10 • 100 <br /> FREQUENCY, Hr <br /> Figure 7.64 <br /> BLASTING LEVEL CHART <br /> • <br /> • <br />