world´s largest silver mine is out, page-10

5 million ounces of annual silver supply and 500,000 ounces of annual gold supply have just been vaporized landslided.
Rio Tinto’s Kennecott mine in Utah- the US’ 2nd largest silver mine and world’s largest copper mine has just suffered a massive landslide which will likely shut down production at the mine for years as upwards of 1 billion tons of dirt and ore have collapsed into the basin.

http://www.silverdoctors.com/10-of-us-annual-silver-supply-just-vaporized/