Making Charcoal

Was introduced to this ritualistic process through the film 'La Quattro Volte (http://www.youtube.com/watch?v=9UoYNZzC2ec)'. The making of the charcoal seems very calm and slow. The house forms that are created to produce the charcoal in are inspirational and beautiful.

I have recently been trying to make my own ash in an outside kiln, inside a saggar, but am not getting vast quantities, which I need. But the pure ash is very beautiful to look at, but when touched the shapes disappear.