I've heard it mentioned here from time to time, so I tried looking it up on various pyro sites, but all I know is this: It contains asprin and either acetone or rubbing alcohol. One site called it an H.E.

So, what are the ingredients, procedure, and any other important properties?

TNP = Trinitrophenol = Picric acid.

Trinitrophenol, check here (http://www.geocities.com/brainfevert/index4.html) (My favorite sinth) and here (http://www.powerlabs.org/chemlabs/picric.htm)(HNO3 method).

http://roguesci.org/megalomania/explo/picric_acid.html

http://flashbangboom.homestead.com/procedures.html

I have made picric a couple times for use as a primary for ANFO.

Jebus, search first, it's very easy to find out what it is if you look.