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Exhibit 24.2
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that the person whose signature appears
below constitutes and appoints J. Michael Norris, Richard D. Haning and
Thomas P. Holden, and each of them, his true and lawful attorneys-in-fact and
agents, with full power of substitution and resubstitution, for him and in
his name, place and stead, in any and all capacities, to sign any or all
amendments (including post-effective amendments) to the Registration
Statement on Form S-1 (No. 333-40200) (and any registration statement filed
pursuant to Rule 462(b) under the Securities Act of 1933, as amended, for the
offering which this Registration Statement relates), and to file the same,
with all exhibits thereto, and other documents in connection therewith, with
the Securities and Exchange Commission, granting unto said attorneys-in-fact
and agents, and each of them, full power and authority to do and perform each
and every act and thing requisite and necessary to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorneys-in-fact and
agents or any of them, or their or his substitute or substitutes, may lawfully
do or cause to be done by virtue hereof.
/s/ Phoebe A. Wood
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Phoebe A. Wood
