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  Except as set forth herein, the terms and provisions of the Notes and the MRA 
shall remain unchanged and in full force and effect. Please signify your 
agreement with the foregoing by executing a copy of this letter in the space 
below and returning the executed copy to Norex.

                                         Very truly yours,

                                         NOREX AMERICA, INC.

                                         By /s/ Frank Capstick
                                           -----------------------------
                                           Frank Capstick
                                           President

AGREED TO THIS
7th DAY OF MARCH, 1995

ZAPATA CORPORATION

BY (SIGNATURE APPEARS HERE)
  --------------------------

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