My mod updated to version 0.8 and now it have unstable metal. It also have polar dwarfs to operate with this metal, because other creatures have 99,9% chance of small explosion in their hands. Mod also have small readme and for some reason Giant hoary marmots. Unstable metal supposed to be used in creation of exploding bolts.
to Rowanas: It seems that only cretures with fixed_temp or just high temp have strong effect on stones and other. Normal creatures dont activate mines or if mines are created from more termo-sensitive material than they can be activated by weather. So at this moment i can't create mines.
to Grimlocke:As i know, the only explosions that exists in DF are explosions of workshops, but they weak and cant throw items far away when explode. So no Ultimate Cannon can be constructed
And even ridiculously high temp doest allow to create really big bum with boiling, so 'Breath of Armok' also cannot be constructed. As for mining out rock - it seems that rock doesnt melt boil or do something else before dwarfs mine them. But they can warm if somthing really warm placed near them.
PS it seems that i forgot to change metal, so now it have DAMAGE_PERC:1
Edit: v0.81 = v0.8 + reaction to create more powerfull unstable metal with normal DAMAGE_PERC