1983: Pakistan Performs ‘Cold Test’ of Nuclear Weapon, US Learns of Test

A. Q. Khan (center of picture) at a test. [Source: CBC] (click image to enlarge)Pakistan carries out a successful test of a nuclear bomb minus the fissionable core, an exercise known as a “cold test.” Pakistan is receiving Chinese help with its nuclear program at this time, and the Chinese may assist with the test. The US learns that the test has been carried out around this time. [Armstrong and Trento, 2007, pp. 120-1; Guardian, 10/13/2007]