(sing to the lyrics of the old Breakin' Up song) They say that blowin' up is har-ard to do; now I know, I know that it's true....
But is it?
Not if you are a potter singing about your pottery! In this case, blowing up is actually fairly easy to do: all you have to do is put wet or damp pots into the kiln to bisque, then heat them up too rapidly. As the water inside the clay expands into steam, pots are almost guaranteed to crack, split, and yes, blow apart.
Avoid the pottery explosions! Know how to ensure your greenware pots are as safe to go into the kiln as possible! Read How to Dry Pottery and Clay Objects.