584 



Table XXI. Resulta vlth damage gaiiges placed above the charge 

 Charge depth, 12 ftj total depth, 25 ft. 



Charge 

 Weight 

 Tetryl 



(S») 



Charge 

 Oistanoe 



(in.) 



Conditions 

 (Ring Diamt 5 ft) 



Damage 

 (lO-^in. ) 



Normal 

 Canage 



(lO-^in. ) 



Increase 

 Top Gauge 

 (1) over 

 Normal 

 (peroent) 



200 



25-1/4 



Burst 



at 

 edge 



58.2 



552/ 



>80 



200 



42 





44.0 



30.0 



>92/ 



62 



200 



42 



35^/ \ 



47.2 



30.9 



62 



100 



22-1/2 





50.4 



43.0 



43.0 



43. C 4 



3^ 



16 



100 



22-1/2 



-3«8" 



55.7 



44.2 



43.9 



42. e 



43^ 



30 



100 



22-1/2 



:® 



46.4 



44.3 



44.1 



43^ 



25° 25° 



100 



22-1/2 



(lO° 10°: 



46.3 



46.6 



13^ 



a/ Estimated from previous data. 



^ Average of side gauges from fourth and fifth shots. 



o/ Ring diameterj 9 ft. 



