Exhibit 3 AMENDMENT TO VOTING TRUST AGREEMENT Pursuant to Section 5 of the Voting Trust Agreement ("Agreement") dated December 29, 1992 by and between Sheldon B. Lubar, Marianne Lubar, David J. Lubar, Kristine L. Thomson, Susan L. Solvang and Joan P....

                                                                    Exhibit 3

                       AMENDMENT TO VOTING TRUST AGREEMENT


             Pursuant to Section 5 of the Voting Trust Agreement
   ("Agreement") dated December 29, 1992 by and between ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇,
   ▇▇▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇▇ ▇. ▇▇▇▇▇, ▇▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇. Solvang and
   ▇▇▇▇ ▇. ▇▇▇▇▇, as depositors ("Depositors") and ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇, as
   trustee ("Trustee"), the undersigned Depositors and Trustee hereby amend
   the last sentence of Section 3.01 of the Agreement to read in its entirety
   as follows:

             "Notwithstanding the foregoing, after six years from
             the date hereof, the Trustee may not sell the stock
             without the approval of the beneficial owner."

             Dated December 12, 1997.


   DEPOSITORS:                             TRUSTEE:


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   /s/  ▇▇▇▇▇ ▇. Solvang              
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