Here's an excellent current research piece on biochar production. A little weighty but well worth one's time.
This describes the technique I've found to work best on my site.
Pulse of Oahu Neighborhoods - SUBHEAD: Elections are underway for Oahu's volunteer advisory neighborhood boards. By Natanya Friedheim on 28 April 2017 for Civil Beat - ( Ihttp://www.c...
6 hours ago