The most comprehensive Charcoal making site:
REPP-CREST : DISCUSSION GROUPS.
They have migrated the Carbon pages to the Gasification Site on Bioenergylists.org
See:
Carbon | Bioenergy Lists: Gasification
Of the 800 people on the REPP gasification discussion discussion list there are a number who are interested in renewable carbon.
See:
Gasification Info Page and the Disucssion Archives at:
The Gasification Archives the archives are searchable via google or on the Gasification website:
Bioenergy Lists: Gasification | This page exists to help people involved in the development of GASIFICATION SYSTEMS.