983 
Filling hole 
Bottom half Top half 
Fig. 6. Plaster of paris molds for casting 
spherical pentolite flash charges. 
Plaster 
of peris Watch glass 
Plaster 
of paris 
Primacord 
Fig. 7. Glass-enclosed spherical Fig. 8. Conical pentolite flash 
flash charge; a cross-sectional view, charge; a cross-sectional view, 
15518 
9 
