The background of this event was related to this laboratory via a phone conversation with W. C. Levengood on 13 July 2009. A bovine excision occurred on a ranch in Colorado on March 8, 2009. Black particulates were found near the animal. The object is to identify the black particulates.
The black particulates are identified as coal. No other materials are detected. This may be native to the area, or transported to the area from another source.