Document MM0wGGzowdkda06EadvLz6yjx

PLAINTIFF'S EXHIBIT GYPSUM S LIME PRODUCTS MASON SUPPLY Mr. J. K. Wise Manager Patent Department Dept. 157 U /' -tr T f't i- . '< vi 5 U' V? s5 i-4 > . fnfMA.U_ /c-y; March 2, 1965 STRUCTO-LITE AND OTHER LIGHTWEIGHT AGGREGATED PLASTERS Field experience has shown that plasters using lightweight aggregates frequently do not have adequate strength on metal lath to resist cracking when subjected to structural movement or other stresses and impacts. Recommendations for using STROCTO-LITE or other gypsum cement plasters aggregated with perlite and/or vermiculite as a scratch and brown coat plaster over METAL LATH have been REMOVED from all USG literature in cluding the A.I.A. Technical Information brochures. Please refer to revised literature before making recommendations. We also suggest that you review with your architects and contractors, C. L, Schermerhorn Ass't. Manager Plastering Materials CLS:jb DISTRIBUTION: Two copies to All Gypsum Plants U.S.A. Send to all Line, Large Job and Mason Supply Specialty Salesmen, all District Correspondents, all Region, Division and District Managers, Quality Personnel, Mason Supply Department Personnel, Research Department (5 copies). Patent Department (2 copies). Product Development (3 copies), Architect Service Dept. (50 copies), and to Messrs. G. J. Morgan, A. J, Watt, E. V, Duffy, R. D. Stephan, M, L. Bartling, C. 0. Futterer, E. R, Stainback, R. C, Glmlin, E. L. Busch, J. P, O'Brien, R. J. Day, B. T. Ballard, H, H. Stebbins, J. H. Daugherty, D. Hallberg, R. B. Fisher, R. Kay, R. R. Hall, F. J, Nunan, H. W. Jarvis, C. A. Wayman, R. E. Underwood (3 copies), G. V, Lane (8 copies), P. W. Splittorff, G, E. Harper, J. Gregg, B, Swenson, J. J. McLaughlin, C. A. O'Donnell, T. Cady, & J. A. Preib. BB022 006