(R) Gaorgiapacific Georgia-Pacific LLC 133 Peachtree Street NE (30303-1847) P.0. Box 105605 Atlanta, Georgia 30348-5605 (404) 652-4000 (404) 584-1461 fax October 14, 2011 Donald E. Gardner, Editor, Inhalation Toxicology Savannah, GA USA Dear Dr. Gardner: During the course of 2008 to 201 1, the Journal of Inhalation Toxicology published the following four articles: 1. Brorby, Sheehan, Berman, Green, Holm, Re-Creation of Historical Joint Compounds, Inhalation Toxicology, 20: 1043-1053 (2008). 2. Bernstein, Donaldson, Decker, Gaering, Kunzendorf, Chevalier, Helm, A Biopersistence Study following Exposure To Asbestos Alone or in Combination with Fine Particles, Inhalation Toxicology, 20: 1009-1028 (2008). 3. Bernstein, Rogers, Sepulveda, Donaldson, Schuler, Gaering, Kunzendorf, Chevalier, Helm, The pathological response and fate in the lung and pleura of in combination with fine particles compared to amosite asbestos following short-term inhalation exposure: interim results, Inhalation Toxicology, 2010, 22(l1) 937-962 (2010). 4. Bernstein, Rogers, Sepulveda, Donaldson, Schuler, Gaering, Kunzendorf, Chevalier, Helm, Quantification of the pathological response and fate in the lung and pleura of in combination with fine particles compared to amosite-asbestos following short- term inhalation exposure, Inhalation Toxicology, 2011; (2011). The first article indicated that the research was primarily funded by Georgia-Pacific LLC and that Georgi a-Pacific has been involved in litigation related to joint compound. The remaining papers stated that the research was funded by a grant from Georgia-Pacific. Georgia-Pacific has not sold joint compounds for more than 30 years, but litigation is pending in which individuals claim exposure to the Company's historic products. The articles listed above report on work that Georgia-Pacific commissioned to address issues that have arisen in that litigation. 1, representing Georgia-Pacific, am an author on all four papers. The other authors are consulting experts retained by or on behalf of Georgia-Pacific to conduct the research and prepare the articles. Dr. Donaldson has been listed as potential testifying expert witness by Georgia-Pacific, and Dr. Bemstein has testified as an expert witness for Georgia-Pacific. Sincerely, Stewart E. Holm Director Toxicology Chemical Management Georgia-Pacific LLC Uploaded to Inhalation Tox website 10/14/11 Manuscript l.D. UIHT-2011-0150