K+S Canada Holdings Inc. and Potash One and

Calculations

Your Entitlement

    K+S Canada Holdings Inc. and Potash One and

    Effective: March 21, 2011 - Sunset:

    On March 21, 2011, K+S Canada acquired all the Common Shares of Potash One which were not already held by K+S Canada at a price of CAD $4.50 per Potash One Share in cash pursuant to a compulsory acquisition.

    In order to receive your cash entitlement, please complete the appropriate Letter of Transmittal and mail it to Kingsdale Advisors along with any Share Certificates that have been issued.

    More information on filling out the Letter of Transmittal can be found here. Should you have any questions, please contact Kingsdale Advisors at the toll-free number 1 (888) 518-6796.


    Document Assistant

    To determine what documentation will be required to exchange the old shares for the new entitlement, use the Document Assistant below. You may also contact Kingsdale Advisors at North American Toll Free: 1-888-518-6796 or (416) 867-2272 or by email (contactus@kingsdaleadvisors.com) with any questions.

    Country of Primary Residence
    How do you hold your shares
    How will your new shares be held
    • Predecessors To K+S Canada Holdings Inc.
    • Predecessors To Potash One