Jean et all, Please include me in the groups findings about plastics conversion to energy too. We train local micro entrepreneurs how to produce biomass briquettes in the developing world. In practi\ce however, a few styrofoam plastic cups and typical shopping / packaging bags slip in to approximate proportion of 10 gm, to 120 gm of biomass material. Seems that there is little effect in terms of smoke and odor because the briquettes burn at a relatively high temperature but is it safe to assume there are no "invisible" effects ? Probably not ,until at least, it can be verified. It would be great to be able to include such in the biomass , as there is so much plastic waste litter out there today. Richard Stanley www.legacyfound.org - Bioenergy List Archives: http://www.crest.org/discussion/bioenergy/200202/ Bioenergy List Moderator: Tom Miles, tmiles@trmiles.com List-Post: <mailto:bioenergy@crest.org> List-Help: <mailto:bioenergy-help@crest.org> List-Unsubscribe: <mailto:bioenergy-unsubscribe@crest.org> List-Subscribe: <mailto:bioenergy-subscribe@crest.org> Sponsor the Bioenergy List: http://www.crest.org/discuss3.html - Other Bioenergy Events and Information: http://www.bioenergy2002.org http://www.crest.org/articles/static/1/1010424940_7.html Bioenergy http://www.crest.org/articles/static/1/1011975339_7.html Gasification http://www.crest.org/articles/static/1/1011975672_7.html Carbon