We got taught a cute little trick using a doubled detcord line with two overhand knots in it inside a plactic PRC-25 radio battery bag filled with about a half canteen cup of flour and an instantaneous Special Engineers Blasting Cap Number 8, not the usual military M7] and a golf-ball sized wad of C4 or 808 with a 50ms delay cap. The one-two punch dust initiator charge would blow the sides and roof off the scrapped-out 40-foot railroad boxcars we got to *dismantle.*
And then we got to blow oil drums using *Lewis Bombs,* baby charges about the size of a tennis ball that were both explosive and incendiary, having a thermite/thermate powder mix kneaded into the C4. And something else, too, which I think I'll not mention.
Better things for better living through chemistry!
Yep, vague is key with EOD..... we have to stay away from the details but as stated, bag of Betty Crocker and a couple of artillery simulators could be fun.
Stay Safe Archy !!!