' 1569 
100 200 300 
0 100 200 300 
10 
Fig. 18b 
20 
Surface 
30 
~ 
\ 
~ 
SS 
40 ® Charge @aties 
Reflected 
Fig. 18c Wave Front Direct 
Wave front 
Fig. 18 
Cavitation region for a 0.5 1b. Pentolite charge at 40 ft. depth. 
ea, He 
