where is the worlds largest salt mine?

Answer 1

This article claims it is in Goderich, Ontario.
http://www.nasalt.com/company/index.htm

This article claims it is somewhere in Mexico.
http://www.scoop.co.nz/stories/HL0610/S00247.htm

This article says that expansion that will be finished in 2008 will push the Ontario mine past the Mexico mine. So the Mexican salt mine must be bigger right now. (Guererro *****, BCS, Mexico)
http://www.saltinstitute.org/rss/industry_news/2006/07/

Answer 2

there are 2 big ones in austria. i was in one 2 yrs ago,,,

Answer 3

my kitchen floor lol