The worst nuclear disaster in history took place during what should have been a routine safety check at Chernobyl nuclear plant. <br /> <br />Negligence resulted in a chain reaction of explosions that melted the fourth nuclear reactor. <br /> <br />The aftermath sent a devastating cloud of radioactive contaminants being sent into the atmosphere, but Moscow was not initially forthcoming about what had happened. <br /> <br />This was President Reagan's response to reporters' initial questions. Report by Guinnesse. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
