Date
1975
Document
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Description
This document describes several different types of permissive action links, or PALs, then in use by the Department of Energy. The authors define PALs as “coded switches” or “electro-mechanical supplements to the administrative controls exercised over nuclear weapon employment.”
Citation
“Control Systems and Combination Locks,” United States Department of State, 1975. http://search.proquest.com.ezp-prod1.hul.harvard.edu/docview/1748544260?accountid=11311.
Provenance
Document made available through the Harvard National Security Archive – ProQuest
Topics
1970s | Custody | Nuclear launch procedure | Nuclear safety | Permissive Action Links | US Department of Energy | United States of America
Document entry started by Max Rizzuto on July 19, 2018. Entry last updated by Mikael Kelly on October 2, 2018.