Grand Canyon tourists would have been exposed to radiation for years

Tourists visiting the Grand Canyon Museum's collections building have been exposed to radiation for years, reports Arizona Republic. A park security officer said the show came from uranium rocks stored in buckets.

Watch "CBS This Morning" HERE: http://bit.ly/1T88yAR
Download the CBS News app on iOS HERE: https://apple.co/1tRNnUy
Download the CBS News app on Android HERE: https://bit.ly/1IcphuX

I like "CBS This Morning" on Facebook HERE: http://on.fb.me/1LhtdvI
Follow "CBS This Morning" on Twitter HERE: http://bit.ly/1Xj5W3p
Follow "CBS This Morning" on Instagram HERE: http://bit.ly/1Q7NGnY

Get new episodes you love the next day, stream live local news and watch entire seasons of CBS fan favorites anytime, anywhere with CBS All Access. Free try! http://bit.ly/1OQA29B

Broadcast by Norah O'Donnell, Gayle King, John Dickerson and Bianna Golodryga, "CBS This Morning" provides a thoughtful, substantial and relevant source of information to a daily audience of 3 million viewers. The award-winning Emmy Awards show features a mix of daily news, nationally and globally important development reports and interviews with political, business and entertainment personalities. Check out the local listings for "CBS This Morning" broadcast times.