"Do they still use mercury fulminate in the detonators?"
I don't really know. It's been years since I worked with explosives and I suppose those were the ones I used. There are others you can use with improvised explosives but they are VERY unstable, like blow your fingers off unstable.
self ping
I am not going to give recipies for explosives on a public forum like this. I will just suggest an idiot at 15 with an interest in chemistry can create hydrazine(rocket fuel) in a toilet bowl. You test it by smoking a cigarette on top of it. Ammonia is one ingredient. Guess the other.