National Museum of Nuclear Science & History
Ann Mazur worked for the United States Engineer District Office.
Cathcart worked in the United States Engineer District Office.
In a communication to Stone & Webster Engineering Corporation, General Leslie Groves gave instruction to discontinue work on the Y-12 Alpha 1 4-J unit, and, authorized Westinghouse Electric Corporation to hire additional draftsmen to accelerate the Y-12 Alpha 2 30-J uranium enrichment program at Oak Ridge, TN.
