Document wKgV164XnxXNByob93nOKm43D

TO: Dave Penney-Austin Interoffice Communication FROM DATE SUBJ T. G. Grumbles August 23, 1990 GST ALUMINA TOXICITY TGG: M'H: AJO: RF VISTA Jeff Fenton has asked that we review the inhalation toxicity of the GST aluminas. We currently plan to market GST 90, 140 and 165. The products have the same morphology but different surface areas. These are small particle size aluminas. In addition to particle size we need to evaluate the potential for surface area to impact toxicity. T. G. Grumbles dlj cc: VPSAG List A. M. Nielsen, J. R. Roheim, Diana Fenton, Lee Matheson, Curt ElsikAustin W. L. McClain VVV 000013462