Making Biochar with Jolly Roger Ovens

A 30 gallon retort heated by a 55 gallon TLUD is the basic idea. I've been a biochar enthusiast for 5 years now and riding the learning curve on how to make and use biochar at home. This device can run very cleanly. The cleanest I have seen for a simple batch device.
Playing with large, red hot, drums is a safety concern. So be thoughtful and careful if you try it. I am looking forward to making improvements to the design and looking forward to seeing anyone elses. This is an open architecture. If you come up with improvements, please share them.
Obviously harvesting the heat for some useful purpose would be a good place to start.
This was my first attempt at putting together a youtube movie and the first time I played with iMovie. It won't be my last. This year, 2012, I hope to share what I am doing with the biochar I have been making.