Story is here: http://www.google.com/url?q=http://online.wsj.com/article/SB...
(google link to get behind paywall)
http://www.usmint.gov/pressroom/?flash=yes&action=press_...
Granted it's from 2001, but I visited the mint in Denver earlier this year and they still claim the same thing.
Story is here: http://www.google.com/url?q=http://online.wsj.com/article/SB...
(google link to get behind paywall)