Document 1MX7x3q3deeboeKOdK5mQxRa

;/ GRACE 0^29340 Construction Products Division W R Grace & Co 62 Whitfemore Avenue Cambridge, Mass, 02140 (617) 876-1400 June 4, 1986 Mr. John Nosse International Conference of Building Officials 5360 South Workman Mill Road Whittier, CA 90601 Dear Mr. Nosse: Referencing your recent meeting with our Mr. Thomas Feit, please be advised that the Type AP cementitious mixture product tested at Underwriter's Laboratories, Inc. is the same material as our MK-6 product. Type AP was the designation given to the product for internal identification during initial product development. When all testing is completed, U.L.I. will be notified that our new product will be named MK-6. We trust the above addresses any inquiries or questions, and ask that you please contact the undersigned if any further information is required. \J'Robert H. Locke Marketing Director d8