Exhibit 99(a)

                                  CERTIFICATION

         In connection with the accompanying Quarterly Report on Form 10-Q (the
"Report") of Lindsay Manufacturing Co. (the "Company") for the quarter ended May
31, 2003, I, Richard W. Parod, Chief Executive officer of the Company, hereby
certify pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of
the Sarbanes-Oxley Act of 2002, to my knowledge, that:

         (1)      the Report fully complies with the requirements of section
                  13(a) or 15(d) of the Securities Exchange Act of 1934; and

         (2)      the information contained in the Report fairly presents, in
                  all material respects, the financial condition and results of
                  operations of the Company.

           /s/ Richard W. Parod
           -------------------------------------
           President and Chief Executive Officer
           Richard W. Parod

           July 15, 2003

         A signed original of this written statement required by Section 906 has
been provided to the Company and will be retained by the Company and furnished
to the Securities and Exchange Commission or its staff upon request.

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