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10000 <br /> 20000 <br /> 5000 10000 <br /> 2000 I l 5000 <br /> o- C0 <br /> 1000 I e tir C <br /> rr hF I 2000 <br /> In500 o°� ° ti 1000 <br /> oSy <br /> oG Q"' a ^` <br /> t C <br /> N <br /> 0 200 ^G �`G I 500 a <br /> 100 <br /> 200 <br /> 50 <br /> � N � <br /> -100 <br /> c 20 -50rn <br /> t <br /> u 10 2 0 <br /> IV <br /> 4 N \yC <br /> o' S ` 4 10 <br /> C I cV I I I c <br /> 2 5 14 <br /> L C <br /> � 1 � <br /> 2 <br /> 0.5 1 <br /> 0.2 I I 0•5 <br /> 0.1 <br /> 1 2 5 10 20 50 100 200 Soo 1000 5000 <br /> Distance from blast - metres <br /> i L <br /> 5 10 20 50 100 200 500 1000 5000 20000 <br /> Distance from blast - feet <br /> Figure 2.0 Rock Damage as a Function of Instantaneous Charge per Delay (From Rock <br /> Slope Engineering, by E. Hoek and J. W. Bray) <br />