Lawrence Livermore National Laboratory

The 1960s ‘Nth Country Experiment’ (Lawrence Livermore)

Briefing book · written March 1967 · released 1 July 2003

Why this matters

In the mid-1960s Livermore asked a few young physicists with no access to classified weapons data to design a nuclear bomb from open literature alone. They produced a credible implosion design in about two and a half years. The declassified summary is a quiet landmark in proliferation risk assessment.

Read the original

https://nsarchive2.gwu.edu/news/20030701/

Hosted by National Security Archive (GWU)

Tags

Part of a collection · step 6 of 15

The Nuclear Paper Trail

Livermore tests the answer with three physicists and a library.

Cite

Lawrence Livermore National Laboratory. "The 1960s ‘Nth Country Experiment’ (Lawrence Livermore)." March 1967. Released 1 July 2003. https://nsarchive2.gwu.edu/news/20030701/ (accessed via The Quiet Archive, QA-0054).

Shelved nearby

  1. 1960 QA-0033
    RAND · Study

    Diffusion of nuclear weapons to additional countries: the ‘nth country’ problem (RAND RM-2484)

    A 1960 RAND study, done for the Air Force, of how and how fast nuclear weapons would spread beyond the first nuclear powers.

    Written 15 Feb 1960 Released 15 Feb 1960 Declassified United States Live
  2. 1962 QA-0031
    LLNL · Report

    Tory II-C hazards of operation (Project Pluto nuclear ramjet), Part 10

    Livermore's hazards analysis for Tory II-C, the ground-test reactor of Project Pluto, a nuclear-powered ramjet missile meant to fly for weeks at low altitude while spewing radiation along its route.

    Written 28 Dec 1962 Released 28 Dec 1962 Declassified United States Live