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Fig. 5. Various types of flash charges prepared at UERL. 
ata F. ~ Various types of flash charges d_at UERL. 
250 gm spherical pentolite flash charge - glass-cased and uncased. (See Figure 7). 
75 gm spherical pentolite flash charge - uncased. 
Materials: primacord, 1/32 in. lead sheet, rubber tape, plaster of paris, and split 
flask (200 ml round bottom). 
Conical flash charges. (see Figure 8). 
Cylindrical tetryl flash charges (salt coated). 
Flash charges for deep water. (see Figure 9). 
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