Document b252nEXnEJdywDmkjJbmxbj1

<412).6B7-S)6o INDUSTRIAL HYGIENE FOUNDATION OF AMERICA. INC Pittsburgh, pa. 15232 August 6, 1969 Office- of She Chairman of the Board Mr. Russell Brittingham President Pittsburgh Corning Corporation One Gateway Center Pittsburgh, Pennsylvania 15222 MG 71959 Dear Mr. Brittingham: The Agreement for Sponsored Research for the fourth year of the IHF Fibrous Dust Study is submitted herewith for review and signature. Please sign both copies, return the original, and retain the other for your ' files An invoice for this period has already been sent to you and your check for the prescribed amount has been received. Your continuing interest in this highly important health-research study is greatly appreciated. + Sincerely, HMB:sjc Enclosures 1 *eei4TN or mDifeTnce re* tri e,ietn*t or MrALtarin. *ohiko coNOrriOMe