Eyewitness accounts of finding unusual fiber materials on the ground have been accumulated over the past year and more in direct connection with unusual aircraft activity. As might be expected, there are repeated, frequent and widespread accounts of respiratory distress and allergic reactions reported in association with such aircraft activity. This paper continues previous research on and presents microscopic views of suspected chemtrail ground samples collected in November and December 1999. Two identical ground fiber samples (one from Sacramento, CA, and one from eastern Oregon) were received, analyzed and compared to synthetic and natural fibers, such as human hair, wool, silk, spider webs, cotton and more. Though found in locations hundreds of miles apart, these two ground fibers exhibited identical characteristics in all respects down to the microscopic level. Based on tests outlined in this paper, it has been demonstrated that the ground sample fibers cannot be identified as any known or common natural or synthetic fiber.