for the fly-ash info deficient- http://www.fhwa.dot.gov/infrastructure/materialsgrp/flyash.htm long article on pozzolans and fly ash.. Environmental Purchasing Bulletin #63: Fly Ash In Concrete: http://www.metrokc.gov/procure/green/bul63.htm ASTM-D5239-98 Standard Practice for Characterizing Fly Ash for Use in Soil Stabilization: http://enterprise.astm.org/PAGES/D5239.htm .I use www.LYCOS.com specifically for WORDS, works so much better than google or standard crawlers. there was an article called Pozzolans unpuzzled by Bruce King: http://www.azstarnet.com/~dcat/BSM.html http://www.icbo.org/Building_Standards_Online/read.cgi?file=./Features_and_Articles/archive/910055448.archive&action=Features_and_Articles Ms. Charmaine Taylor/ Taylor Publishing http://www.dirtcheapbuilder.com http://www.papercrete.com PO Box 375, Cutten CA 95534 books@dirtcheapbuilder.com 707-441-1632 ------------------------------------------------------------------------- To unsubscribe from the list, send a message to: <strawbale-unsubscribe@crest.org> or for the digest to: <strawbale-digest-unsubscribe@crest.org> Please send any list administration questions to strawbale-owner@crest.org