On 2 June 2014 21:35, Robert Dvoracek wrote: > You're thinking of Castle Bravo. > > Comes from not looking it up. And explains why my brain was insisting Starfish Prime damaged street lights in Hawaii AND gave us really good sunsets for weeks. Still not looking it up [tm] SP was (brain says) the high altitude 'test' at about ?100 miles? aimed at giving the ionosphere or whatever a good talking to. And Russian fishing boats turned up not only on site but at the 'mirror point'* in the other hemisphere, thereby showing that they understood exactly what the US were investigating. AFAIK the Hawaiian streetlights were a bonus and saw the birth of the EMP industry. But maybe that was ... :-). Russell * insert proper technical term. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .