POWER OF ATTORNEY
The undersigned does hereby appoint Roger S. Begelman, Felicia Rector,
Andrea DeMar, Yvette Kosic and Kevin P. Treanor (and any other employee of The
Goldman Sachs Group, Inc. or one of its affiliates designated in writing by one
of the attorneys-in-fact), his true and lawful attorneys, and each of them his
true and lawful attorney, with power to act without the other, and with full
power of substitution and resubstitution, to execute for him and in his name any
Initial Statement of Beneficial Ownership of Securities on Form 3, any Statement
of Changes in Beneficial Ownership on Form 4 and any Annual Statement of Changes
in Beneficial Ownership on Form 5, or any similar or successor form, which may
be required to be filed by him with the Securities and Exchange Commission and
any and all instruments necessary or incidental therewith, hereby granting unto
said attorneys and each of them full power and authority to do and perform in
the name and on behalf of the undersigned, and in any and all capacities, every
act and thing whatsoever required or necessary to be done in and about the
premises, as fully and to all intents and purposes as the undersigned might or
could do in person, hereby ratifying and approving the act of said attorneys and
each of them.
This power of attorney shall not be affected by the subsequent disability
or incompetence of the principal. This power of attorney shall remain in full
force and effect until either revoked in writing by the undersigned or until
such time as the person or persons to whom power of attorney has been hereby
granted cease(s) to be an employee of The Goldman Sachs Group, Inc. or one of
its affiliates.
In witness thereof the undersigned hereunto signed his name this 30th day
of January, 2008.
/s/ Henry Cornell
-------------------
Henry Cornell