EXHIBIT 1
JOINT FILING AGREEMENT
The undersigned acknowledge and agree that the foregoing statement on Schedule
13D is filed on behalf of each of the undersigned and that all subsequent
amendments to this statement on Schedule 13D may be filed on behalf of each of
the undersigned without the necessity of filing additional joint filing
agreements. The undersigned acknowledge that each shall be responsible for the
timely filing of such amendments, and for the completeness and accuracy of the
information concerning him or it contained herein and therein, but shall not be
responsible for the completeness and accuracy of the information concerning the
others, except to the extent that he or it knows or has reason to believe that
such information is inaccurate.
Dated: August 15, 2008
THE CHILDREN'S INVESTMENT FUND
MANAGEMENT (UK) LLP
/s/ Xxxxxxxxxxx Xxxx
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Xxxxxxxxxxx Xxxx
Managing Partner
THE CHILDREN'S INVESTMENT FUND
MANAGEMENT (CAYMAN) LTD.
/s/ Xxxxx XxXxxx
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Xxxxx XxXxxx
Director
THE CHILDREN'S INVESTMENT
MASTER FUND
/s/ Xxxxx XxXxxx
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Xxxxx XxXxxx
Director
/s/ Xxxxxxxxxxx Xxxx
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Xxxxxxxxxxx Xxxx
