Luu peal Dose Rote (mehr) 100 rrrrery TT YVITTTT 1000 L 4 10 E 3 " 4 r = y y HProbe"l - | meter corrected depth @4m @Prode*2- 20 meters corrected depth 168m 7 7 § + Prode® 3- 4O meters corrected depth 33.6m 4 1 Prode*S -80 maters cormcted depth 672m Recorder Triggered at 1G minutes after shot LO OL. "be 0 _l q4 P = - 4 a =q p 4 L 10 1 40 L x0 at i L 1 60 70 80 30 Minutes After Shot Time 4 100 t to Ld 120 130 140 Figure 2.14 Shot Tewa penetration meter readings, log scale, time in minutes. 53

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