POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 25 day of September,
2002.
/s/ Robert L. Crandall
----------------------
Robert L. Crandall
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 1st day of October, 2002.
/s/ Kenneth T. Derr
-------------------
Kenneth T. Derr
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 24th day of September,
2002.
/s/ Charles J. DiBona
---------------------------
Charles J. DiBona
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 26th day of September,
2002.
/s/ Lawrence S. Eagleburger
---------------------------
Lawrence S. Eagleburger
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 23 day of September,
2002.
/s/ W. R. Howell
---------------------------
W. R. Howell
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 17th day of October,
2002.
/s/ Ray L. Hunt
---------------------------
Ray L. Hunt
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 24th day of September,
2002.
/s/ David J. Lesar
---------------------------
David J. Lesar
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 26th day of September,
2002.
/s/ Aylwin B. Lewis
---------------------------
Aylwin B. Lewis
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 24th day of September,
2002.
/s/ J. Landis Martin
---------------------------
J. Landis Martin
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 24 day of September,
2002.
/s/ Jay A. Precourt
---------------------------
Jay A. Precourt
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 27 day of September,
2002.
/s/ Debra L. Reed
---------------------------
Debra L. Reed
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do hereby
constitute and appoint Margaret E. Carriere, Susan S. Keith, Bruce A. Metzinger
and Michael A. Weberpal, or any of them acting alone, my true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to prepare and sign for me, and in my name, place and stead, in
any and all capacities, any and all reports as may from time to time be required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and the
rules, regulations and requirements of the Securities and Exchange Commission in
respect thereof, and to file the same with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents full power and
authority to do and perform each and every act and thing requisite and necessary
to be done (with full power to each of them to act alone), as fully and to all
intents and purposes as I might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitutes, may lawfully do or cause to be done by virtue hereof.
This Power of Attorney shall remain in full force and effect until
revoked by me in writing.
IN WITNESS WHEREOF, I hereto set my hand this 24th day of Sept., 2002.
/s/ C. J. Silas
---------------------------
C. J. Silas