<PAGE>
 

                                   SIGNATURES



          Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.



                                ZAPATA CORPORATION



                        By:   /s/ JOSEPH L. VON ROSENBERG
                            ------------------------------
                            Joseph L. von Rosenberg III
                            Vice President, General Counsel
                            and Secretary



Date:  November 21, 1995

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