Letters and Correspondence


DOE Response to Board September 6, 2012, Letter which Issued a Reporting Requirement Concerning NNSA's Approach to Validate the Modeling Assumptions at the Uranium Processing Facility (UPF) Main Building, Y-12 National Security Complex


Thomas P. D'Agostino

Administrator, National Nuclear Security Administration
Department of Energy
1000 Independence Ave., SW
Washington, DC 20585


The Honorable Peter S. Winokur

Defense Nuclear Facilities Safety Board
625 Indiana Ave., NW, Suite 700
Washington, DC 20004

This Letter Pertains To:

Defense Nuclear FacilityY-12 National Security Complex / Oak Ridge National Laboratory