VBMB - Velocity bomb. Like regular BOMB, but only explodes when impacting something hard at high velocity or pressure. Heavy, so it falls fast. Upon detonation, creates a fairly strong TNT-like blast. Great for people who like to make things explode without them exploding prematurely.
HBMB - Hydrogen bomb. Upon detonation, creates an enormous fusion blast and spews neutrons everywhere. Great for the nuke-crazed pyromaniacs.
IBMB - Incendiary bomb. Flings burning BCOL, THRM and FSEP all around, scorching pretty much everything. The ultimate pyro weapon.
CBMB - Capacitor bomb. Zaps everything around it with a powerful blast of lightning.
BMBC - Bomb container. Like INSL, but contains bombs without detonating them.
Uses? Everyone loves a good explosion.
Might make creating bombs too easy.
You can already do most of those with BCLN.
vbmb I like, it has potential for bomb-transportation challenges, PSTN tanks and breakable guns; actually a really good idea. (maybe call it SHEL [shell as in bullet shell]?) It is currently impossible to build any weapons that can be fully destroyed [i.e. no DMND, VOID, INST etc.] but this would change all that. +1 for that. [however I must make the point that no matter how heavy something is, it will fall at the same rate http://www.youtube.com/watch?v=5C5_dOEyAfk]
SHEL
Description: Shell. Will not explode until it it collides with something at great speed.
Colour: Dull red, similar to copper.
Reactions: if ∑v>10, and is touching another pixel, will explode like BOMB, and create pressure like C-4. Manufactured by mixing GUN with BMTL at temp>1200.