Typical Stab Fuze Primer

Fig 1-33 BUTTON-TYPE ELECTRIC DETONATOR T62 Fig 1-34 TYPICAL STAB FUZE PRIMER 

Until about I960 it was considered that the minimum diameter for propagation of Tetryl, RDX and PETN in light confinement was 0.125, 0.100 and 0.050-inch respectively. 

A comprehensive description of current electric detonators is given by Freiwald (Addnl Ref Ad 160) 

There are two types of fuze primers unobturated and obturated . Obturated primers contain an anvil, while unobturated do not contain it. Following are examples of unobturated fuze primers a) Instantaneous Stab Fuze Primers 

These primers consist of a thin metallic cup filled with a very sensitive priming mix- 

---