Grable
Operation Upshot-Knothole

Yield: 15 Kilotons
Location: Nevada Test Site
Date: May 25, 1953
Fired from 280mm gun, test of the Mk9 nuclear weapon
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Yield: 15 Kilotons
Location: Nevada Test Site
Date: May 25, 1953
Fired from 280mm gun, test of the Mk9 nuclear weapon