Potash June 18, 2012California, Eastern Cornbelt, Market Watch, Pacific N.W., Potash Muriate, U.S. Gulf, U.S. Imports, Western Canada, Western Cornbeltwebster@kennedyinfo.com U.S. Gulf: Potash barges were quoted at $475-$485/st FOB. U.S.This content is restricted to site members. If you are an existing user, please log in. If you would like to Subscribe please go to the 'Subscribe' area from the main menu.