Thomas R. Miles has designed, developed, installed and tested agricultural and industrial systems for fuel handling, air quality, and biomass energy since 1975. An expert in combustion and gasification of biomass, he has designed and developed many systems to make biochar. He has sponsored and hosted internet discussions on biomass energy since 1994 including biochar@yahoogroups.com listservs and www.biochar.bioenergylists.org since 2006.