I just joined the forums, and I've got some simple ideas:
ALUM - Aluminum. Conductive. Desintigrates into BRAL under pressure.
BRAL - Broken Aluminum. Flammable.
OXID - Oxidizer. Flammable liquid. Combines with BRAL to make SLRK.
LQRK - Liquid rocket fuel. When burned with Oxidizer, it combusts for a long time.
SLRK - Solid rocket fuel. Slightly more explosive force than LQRK.
Rocket Engines are made too much. We've had too many. Aluminium would do the things other things already do.
Layer of TNT, layer of WOOD, Repeat. There you go.