On 1/31/12 Woodstock made a new entry in their blog documenting the efficiency of a cat in cleaning up even a low wet wood burn (no they aren't recommending that). They made 3 burns. One was the EPA standard approved load of 4x4's and 2x4's and the other two were loads of maple at 19% and 36% and documented the results. Be sure to download the pdf of the test results they link to if you are interested in some pretty amazing results.
http://woodstocksoapstoneco.blogspot.com/
http://woodstocksoapstoneco.blogspot.com/