Henry K. (Kelly) Hardcastle is director of Research and Development for Atlas MTT LLC Weathering Services and is responsible for designing, analyzing and presenting experiments involving durability of materials. He has 18 years of experience in weathering and materials degradation on an R&D and quality assurance level. For more information, call 773-327-4520, e-mail info@atlas-mts.com or visit www.atlas-mts.com.