Signature page

This Memorandum has been prepared in September, 1943, shortly before the signing of the formal definitive Contract and about nine months after the signing of a Letter Contract on December 21, 1942, and the consequent beginning of the work. In consequence, it specifies and describes the Plutonium process and the circumstances under which large-scale Plutonium production is being undertaken, not as that process and those circumstances existed at the time the work was begun but as they have developed in the course of nine months of intensive effort by the Government, the University of Chicago and the Contractor. All three parties are in agreement with the statements made in this Memorandum, as witnessed by their signatures hereto.

Approved and Agreed to

UNITED STATES OF AMERICA

by_________________________

Witness

___________________________

UNIVERSITY OF CHICAGO

by ________________________

Witness

___________________________

E. I. DU PONT DE NEMOURS & CO.

by ________________________

Witness

___________________________