In their presentation at the GACC forum, Paul Means and Chris Lanning take a look at the supply chain problem with using woody biomass as a replacement for charcoal in urban areas, and they propose some ideas for equipment that may overcome those problems, as well as identifying some of the challenges to that approach.

See the full presentation here:
http://www.stoves.bioenergylists.org/files/woody_biomass_supply_chains_-_gacc_forum_2013_r.pdf
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