The upper stage of a Spartan anti-ballistic missile interceptor with a nuclear warhead is loaded into its shot hole for the nuclear test Cannikin of Operation Grommet on Amchitka, Alaska.
United States Atomic Energy Commission
1971
Taken from <a rel="nofollow" class="external text" href="http://www.llnl.gov/50th_anniv/decades/1970s.htm">llnl.gov</a>, this is a photo of preparations for the Cannikin nuclear test. Since it was produced by a US federal government employee, it should be copyright-free.