Sonoma Biochar Initiative hosted the 2012 US Biochar Conference
For more on their work visit the SonomaBiocharInitiative.org website.
Steven Traiger is currently a student at Indian Valley College, Marin County, Organic Farm. I have been doing vermiculture for over 10 years and helping develop the process at the Farm for both worm castings and worm tea. I am learning to use Castings with Biochar to make Bio-castings and many other useful uses of Biochar around an Organic Farm.