This O2 Compost Micro-Bin System can be found at the Washington State University Extension (research facility) in Puyallup, Washington. Implemented by Senior Scientific Assistant Andy Bary, it is used in a number of projects, including the fate of animal antibiotics and biosolids research (in conjunction with King County Metro). Our aerated system is also a key component to the WSU-Extension's annual Compost Facility Operator Training class.