@EVERYONE try ambiant heat. If anything comes into contact with it, the reaction of ambient heat exchange is so massive it goes through wall. It is more powerful than ANY bomb ever made. @smp255 you are a legend.
also, I don't think it is only coal effected by this, it's every element.
@Videogamer555 OK, get some lava, type "!set temp lava 333e3", divide screen with single thickness wall, put particals on each side, turn ambient heat on and unpause. O_O