A long interview in Acres.
nothing new except this 'throw away' comment
Quote:
CRES U.S.A. Was all charcoal-making done by burning logs where they lay, or was there other technology involved?
MANN. Yes, there are dome-like structure that operate much like the new wood-burning stoves — you can control them so that they burn very, very clean and have relatively low oxygen inside. The ones I’ve seen are buried under earth rather carefully, with just enough oxygen holes to let the wood smolder.
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He does not say what the domes were made of grass? wood?
pottery?
Acres U.S.A. -- A Voice for Eco-Agriculture
