Kill Zone

DOE’s proposed repository as designed will be capable of safely isolating used nuclear fuel and high-level radioactive waste for the one-million-year period.…

—[Independent] Safety Evaluation Report Related to Disposal of High-Level Radioactive Wastes in a Geologic Repository at Yucca Mountain, Nevada. Office of Nuclear Material Safety and Safeguards, U.S. Nuclear Regulatory Commission, January 2015

A SAP [Special Access Program] is a program established for a specific class of classified information that imposes safeguarding and access requirements exceeding those normally required for information at the same classification level.

— U.S. Department of Energy website (unclassified)