{"id":412,"date":"2010-08-16T13:14:22","date_gmt":"2010-08-16T18:14:22","guid":{"rendered":"http:\/\/www.thehistoricalarchive.com\/happenings\/?p=412"},"modified":"2010-08-19T08:06:45","modified_gmt":"2010-08-19T13:06:45","slug":"atomic-annie-americas-280-mm-nuclear-cannon","status":"publish","type":"post","link":"http:\/\/www.thehistoricalarchive.com\/happenings\/412\/atomic-annie-americas-280-mm-nuclear-cannon\/","title":{"rendered":"Atomic Annie: America&#8217;s 280-mm Nuclear Cannon"},"content":{"rendered":"<div class=\"147322a129097e1fa44d6732c925fd6d\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script type=\"text\/javascript\"><!--\r\ngoogle_ad_client = \"ca-pub-8134560547846945\";\r\n\/* 468x60 tha *\/\r\ngoogle_ad_slot = \"1487607395\";\r\ngoogle_ad_width = 468;\r\ngoogle_ad_height = 60;\r\n\/\/-->\r\n<\/script>\r\n<script type=\"text\/javascript\"\r\nsrc=\"http:\/\/pagead2.googlesyndication.com\/pagead\/show_ads.js\">\r\n<\/script>\n<\/div>\n<p> During WWII, the U.S. Army determined that there was a need for a mobile  long range heavy artillery weapon to attack strategic targets behind  enemy lines &#8211; communication centers, fortified positions, enemy long  range artillery and other high value targets. After the war, it was  determined that a heavy artillery weapon that could fire an atomic  warhead would be even more desirable. This kicked off a dual development  effort &#8211; designing and building the actual weapon and designing a small  enough atomic warhead to be used as a shell for the weapon. <!--more--><\/p>\n<p>In 1952, the cannon was complete. The 280-mm Atomic Cannon weighted  88 tons and was transported by two vehicles capable of moving at speeds  up to 40 miles per hour. The cannon could be set up and ready to fire in  15 minutes or less.<\/p>\n<p>But it wasn&#8217;t until 1953 that it could be tested with an atomic shell.<\/p>\n<p>On May 25, 1953, during the <a href=\"http:\/\/www.thehistoricalarchive.com\/products\/awt-operation-upshot-knothole.html\">Operation Upshot-Knothole test series<\/a> conducted at the Nevada Atomic Test Site, the first and last atomic  shell was fired by Atomic Annie as part of the Grable test. The shell  was fired a distance of seven miles, was exploded in the sir and had a  yield of 15 kilotons (15,000 tons of dynamite\/TNT.)<\/p>\n<p>The test was considered a success and a total of twenty atomic  cannon were built. But over the years, they were slowly retired as their  strategic value was greatly diminished. This happened for three  reasons. The first was that the world was adverse to atomic weapons used  in future conflicts. The second was more practical. Due to the weight  of the cannon &#8211; 88 tons, it could only travel on high quality roads &#8211;  something that generally did not exist in the conflicts of the 50s and  60s. The third reason was simple progress. Smaller cannons &#8211; 8 inch and  155 mm &#8211; were developed that were much more mobile and of more practical  value in the conflicts of the 50s and 60s.<\/p>\n<p>Today, there are only four 280-mm cannons still in existence. They  are all retired and located at various locations in the United States.  Atomic Annie still exists. It is located at Fort Sill. The other three  that exist are at the National Atomic Museum in Albuquerque, NM; Fort  Riley, Kansas and Aberdeen Proving Ground, MD.<\/p>\n<p>For more details on <a href=\"http:\/\/www.thehistoricalarchive.com\/products\/awt-operation-upshot-knothole.html\" target=\"_blank\">Operation Upshot-Knothole<\/a>, check out our <a href=\"..\/..\/categories\/Atomic-Weapons\/index.html\" target=\"_blank\">Atomic Weapons Video<\/a> collection.<\/p>\n\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div><iframe src=\"http:\/\/www.facebook.com\/plugins\/like.php?href=http%3A%2F%2Fwww.thehistoricalarchive.com%2Fhappenings%2F412%2Fatomic-annie-americas-280-mm-nuclear-cannon%2F&amp;layout=standard&amp;show_faces=true&amp;width=450&amp;action=like&amp;colorscheme=light\" scrolling=\"no\" frameborder=\"0\" allowTransparency=\"true\" style=\"border:none; overflow:hidden; width:450px;margin-top:5px;\"><\/iframe>","protected":false},"excerpt":{"rendered":"<p>During WWII, the U.S. Army determined that there was a need for a mobile long range heavy artillery weapon to attack strategic targets behind enemy lines &#8211; communication centers, fortified positions, enemy long range artillery and other high value targets. After the war, it was determined that a heavy artillery weapon that could fire an [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_links_to":"","_links_to_target":""},"categories":[34],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"http:\/\/www.thehistoricalarchive.com\/happenings\/wp-json\/wp\/v2\/posts\/412"}],"collection":[{"href":"http:\/\/www.thehistoricalarchive.com\/happenings\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.thehistoricalarchive.com\/happenings\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.thehistoricalarchive.com\/happenings\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.thehistoricalarchive.com\/happenings\/wp-json\/wp\/v2\/comments?post=412"}],"version-history":[{"count":0,"href":"http:\/\/www.thehistoricalarchive.com\/happenings\/wp-json\/wp\/v2\/posts\/412\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.thehistoricalarchive.com\/happenings\/wp-json\/wp\/v2\/media?parent=412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.thehistoricalarchive.com\/happenings\/wp-json\/wp\/v2\/categories?post=412"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.thehistoricalarchive.com\/happenings\/wp-json\/wp\/v2\/tags?post=412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}