Biochar burn school results - another haze reduction strategy?

Where open burning is legal and unavoidable, the technique demonstrated here offers benefits for pollution / haze reduction and biochar production.
"A quick summary of results of experiments in open burn techniques to minimize smoke and maximize charcoal production. Experiments were conducted by volunteers over a 3 day period, November 15-17, 2013, outside of Grants Pass, Oregon."

Biochar burn school results from kelpiew

http://www.slideshare.net/kelpiew/biochar-burn-school-results