I just finished listening to Command and Control - Nuclear Weapons, the Damascus Accident, and the Illusion of Safety by Eric Schlosser. This is a very very interesting book. This is a very very long book.
I am very surprised at how many nuclear bomb accidents we've had. Wow. Here's Wikipedia's page outlining the many nuclear accidents. This book includes many more details about some of them than I could find anywhere online. This was all especially interesting to me because many years ago I worked in the ICBM world.
Throughout the book, Schlosser gives a very detailed account of the 1980 Damascus accident, where a Titan II ICBM blew up in its silo near Damascus, Arkansas. That event began when a maintenance technician dropped a socket down the silo that bounced off something and struck the missile, puncturing the rocket and the first stage fuel tank. This led to a cascade of human errors culminating in rocket fuel explosions that blew off the top of the missile silo and tossed the 9 megaton thermonuclear warhead hundreds of feet away. It was amazing that only one person died. It was amazing that half of Arkansas wasn't incinerated.
I found these images online. This graphic of a Titan II missile silo complex was very useful in following the story during some sections of the book.
Here's a photo of a Titan II in its silo, followed with a photo of the hole created by the Damascus accident.