Reminds me of my chemistry teachers problems with thermite. I have to say he was a more theoretical guy ;-) He managed to mix the worlds first fire-resistent Thermite. He even stuck a strip of magnesium in the heap and lighted it - it burned down to the Thermite and suffocated...

And this guy just takes some soda cans and river sand and makes it work. Hats off!

LAVA!