Document 5bJanod1KzaVpVVryMRVg8zm0

ZONOLITE ------ MAY 17 1968 DIVISION W. R. GRACE & CO. MMCHANDISf MARI HAZ' CHICACO. lUMOIS AMS MINERS AND MANUFACTURERS OF VERMICULITE PRODUCTS May 16, 1968 : ; PLAINTIFF'S i EXHIBIT WRG-321 Mr. L. A. Barron Vermiculite Institute 208 South LaSalle Street Chicago, Illinois 60604 Dear Les: Since the Sprayed Mineral Fiber Manufacturers Association is being an integral part of the meeting to be held in New York City, I feel the VI could reinforce our ranks. This is with regards to the new rules being put into ef fect by the Board of Standards and Appeals. I will leave Monday Evening May 27 for the meeting to be held on May 28. If you wish I will have John Ottinger make a reservation for you at the same hotel I will be at for Monday Night. Please advise. Sincerely, ZONOLITE DIVISION W. R. Grace & Co. /ll/ M. Malter, P.E. Manager - Fire Protection MM:md cc: J. C. Ottinger - New York J. Cintani - Trenton