<PAGE>
EXHIBIT 24
POWER OF ATTORNEY
WHEREAS, Zapata Corporation, a Delaware corporation (the "Company"), intends
to file with the Securities and Exchange Commission (the "Commission") under
the Securities Exchange Act of 1934, as amended (the "Act"), an annual report
on Form 10-K for the fiscal year ended September 30, 1994 (the "Form 10-K")
pursuant to the Act and the rules and regulations of the Commission
promulgated thereunder;
NOW, THEREFORE, the undersigned in the capacity of a director, officer or
both a director and officer of the Company, as the case may be, does hereby
appoint Lamar C. McIntyre and Joseph L. von Rosenberg III, and each of them,
severally, as his true and lawful attorney or attorneys-in-fact with full
power of substitution and resubstitution, to execute in his name, place and
stead, in his capacity as director, officer or both, as the case may be, the
Form 10-K and any and all documents necessary or incidental in connection
therewith, including without limitation any amendments to the Form 10-K, and
to file the same with the Commission. Each of said attorneys-in-fact shall
have full power and authority to do and perform in the name and on behalf of
the undersigned in any and all capacities, every act whatsoever necessary
or
desirable to be done in the premises as fully and to all intents and purposes
as the undersigned might or could do in person, the undersigned hereby
ratifying and confirming the acts that said attorneys-in-fact and each of
them, or their or his substitutes or substitute, may lawfully do or cause to
be done by virtue hereof.
IN WITNESS WHEREOF, the undersigned has executed this power of attorney as of
the 1st day of December, 1994.
[SIGNATURE OF KRISTIAN SIEM
APPEARS HERE]
------------------------
KRISTIAN SIEM