Exhibit 99.1

                           Explanation of Responses:

(1) Pursuant to an agreement made and entered into as of June 28, 2006, Third
    Point LLC ("Third Point") has the irrevocable right, for the benefit of
    certain funds to which Third Point acts as investment manager or adviser
    (the "Funds), to receive any and all compensation, including cash and
    securities, otherwise payable to Daniel S. Loeb ("Mr. Loeb") and Todd Q.
    Swanson in their capacities as directors of Massey Energy Company. In
    accordance with this agreement, Third Point received on behalf of the Funds
    the shares of common stock reported in this Form 4. Mr. Loeb is the Managing
    Member of Third Point, and by reason of the provisions of Rule 16a-1 under
    the Securities Exchange Act of 1934, as amended, Mr. Loeb and Third Point
    may be deemed to be the beneficial owner of the securities beneficially
    owned by the Funds. Mr. Loeb and Third Point each disclaim beneficial
    ownership of all such securities, except to the extent of any indirect
    pecuniary interest therein.