Document G6yvGnEN456j5jJw30jyvZ3N

PROTECTED MATERIAL ]NSANTO INSURANCE COVERAGE LITIGATION -l Texas City '\ C, E. Caspar1, Jr. St. Louis April 19, 1956 R. D. Dunlop ETHYL CORPORATION In order to complete your records with respect to the contract with Ethyl Corporation covering the sale of vinyl chloride monomer know-how, I am attaching to this letter a supplemental agreement which gives ub the right and Ethyl the obligation to discuss with us the sale of monomer made in this plant over and above the commitments which they have at the present time. This is an essential part of the agreement and will cover the transaction as it exists; and will complete your files. H. K. Eckert STS 1006316 / RSV0030972