EXHIBIT 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints William R. Johnson, Lawrence J. McCabe and Paul F. Renne, and each of them, such person's true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for such person and in such person's name, place and stead, in any and all capacities, to sign H.J. Heinz Company's Annual Report on Form 10-K for the fiscal year ended April 28, 1999, and to sign any and all amendments to such Annual Report, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done, as fully to all intents and purposes as such person might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them, or such persons' or person's substitute or substitutes, may lawfully do or cause to be done by virtue hereof. This Power of Attorney has been signed below as of the 14th day of July, 1999 by the following persons in the capacities indicated. Signature Title - --------- ----- /s/ Anthony J. F. O'Reilly Chairman of the Board of Directors - ----------------------------- Anthony J. F. O'Reilly /s/ William R. Johnson President and Chief Executive Officer - ----------------------------- and Director (Principal Executive Officer) William R. Johnson /s/ Paul F. Renne Executive Vice President and Chief - ----------------------------- Financial Officer and Director (Principal Paul F. Renne Financial Officer) /s/ Lawrence J. McCabe Senior Vice President, General - ----------------------------- Counsel and Secretary and Director Lawrence J. McCabe /s/ William P. Snyder III Director - ------------------------------ William P. Snyder III /s/ Herman J. Schmidt Director - ------------------------------ Herman J. Schmidt /s/ Eleanor B. Sheldon Director - ------------------------------ Eleanor B. Sheldon /s/ Samuel C. Johnson Director - ------------------------------ Samuel C. Johnson /s/ Donald R. Keough Director - ------------------------------ Donald R. Keough /s/ S. Donald Wiley Director - ------------------------------ S. Donald Wiley /s/ David R. Williams Director - ------------------------------ David R. Williams /s/ Nicholas F. Brady Director - ------------------------------ Nicholas F. Brady /s/ William C. Springer Director - ------------------------------ William C. Springer /s/ Edith E. Holiday Director - ------------------------------ Edith E. Holiday /s/ Candace Kendle Director - --------------------------- Candace Kendle /s/ James M. Zimmerman Director - --------------------------- James M. Zimmerman /s/ Leonard S. Coleman, Jr. Director - --------------------------- Leonard S. Coleman, Jr. /s/ A. G. Malcolm Ritchie Director - --------------------------- A. G. Malcolm Ritchie /s/ Edward J. McMenamin Vice President--Corporate Controller - --------------------------- (Principal Accounting Officer) Edward J. McMenamin