From 1975 until 1999 I was designing and building passive solar rammed earth homes. For the last 10 years I have been involved with the development and distribution of equipment for making biochar. We have made a lot of biochar but the only CharKilos we have been awarded so far is from the biochar that can be seen in the video below. We are now producing small biochar producing heaters to be used mostly by families in Northern Mexico working with the NGO Border Partners.