Priming of Dynamite Charges Fired with Electric Blasting Caps

Fig 5 PRIMING OF DYNAMITE CHARGES FIRED WITH ELECTRIC BLASTING CAPS 

In Fig 6.is shown indirect priming method recommended in blasting permissible dynamite 

Later a switch was made to the (Azide-Styph-nate-Aluminum) ASA/Tetryl detonator (Ref 43, p A493-R) and only No 6 No 8 detonators continued to be manufd. For example the No 8, manufd by the Nobel Society, contained 0.35g of LA-LSt mixture and 0.55g of Tetryl (Ref 29a, p 77). The most recent change has been the substitution of PETN for Tetryl, which gave AS A/PETN detonator (Ref 43, p A493-R) 

German detonators known at the time of WWII are described in Ref 35, pp Ger 34  

In the book of Fordham (Ref 51, p 108-09) are described Brit plain detonators such as No 6, which contains as a base chge 0.24g PETN and No 8 Star, which contains 0.8g PETN. As a priming charge, in both cases, a 2/1 mixt of dextrinated LA/LSt is used with ca 3% A1 powder and, sometimes, 3% Tetryl added 

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