[Terrapreta] pulverizing charcoal

[Greg and April]

Cast one out of concrete and use a scrap drive shaft to do the pounding.

You could even cast exit holes so that once the char reaches the desired fineness it will fall out on it's own.

Alternatively, you could grind it up the same way that the Spanish did gold ore, with a big stone ( or concrete ) wheel, being hauled around by a mule or ox, rolling around and around in a trough.

Greg H.

  ----- Original Message ----- 
  From: Michael Bailes 
  To: Terra Preta 
  Sent: Monday, May 19, 2008 18:54
  Subject: Re: [Terrapreta] pulverizing charcoal



  Could someone please import some of those huge "Mortar and pestles" used to smash grain in Africa?
  m

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