Linked from
The 10 pages that link to Explosive train, each with the reason it gives.
Land mineRelated: A mine’s trigger starts the chain that sets off its main charge.
Unexploded ordnanceRelated: A break anywhere in this sequence can prevent detonation.
TetrylNarrower topic: Tetryl occupied the transfer stage between initiation and the main charge.
Contact fuzeNarrower topic: A contact fuze is one initiating part of this larger chain.
Lead(II) azideNarrower topic: Its application makes sense as one stage in a larger sequence.