1204 
Pressure (1000 p.s.i.) 
@ (microsec.) 
26 
22 
18 
14 
10 
Theoretical a 
Fig. 1 
59 
- Average extrapolated peak pressures 3 
in the plane of intersection of shock 
waves, produced by two ca. 1700 ge. 
pentolite charges 4 feet from the inter- 
section, as a function of charge separ] 
ation (8 cos < feet). 
OC (degrees) 
40; 
O- Ga 
L = GB @ Single 3400 g. charge 
Fig. 2 - The effective time constant (see text) 
obtained under the same conditions as in 
Fig. l. 
Ratio to single 1700 g. charge 
