EXHIBIT 31.2
                                                   FORM 10-Q
                                 QUARTER ENDED JUNE 30, 2003



         CERTIFICATION OF VICE PRESIDENT-FINANCE AND SECRETARY
             PURSUANT TO SECTION 302 OF SARBANES-OXLEY ACT

I, Craig R. Mackus, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of Bucyrus
     International, Inc.

2.   Based on my knowledge, this quarterly report does not contain any
     untrue statement of a material fact or omit to state a material
     fact necessary to make the statements made, in light of the
     circumstances under which such statements were made, not misleading
     with respect to the period covered by this quarterly report;

3.   Based on my knowledge, the financial statements, and other
     financial information included in this quarterly report, fairly
     present in all material respects the financial condition, results
     of operations and cash flows of the registrant as of, and for, the
     periods presented in this quarterly report;

4.   The registrant's other certifying officers and I are responsible
     for establishing and maintaining disclosure controls and procedures
     (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and
     internal control over financial report (as defined in Exchange Act
     Rules 13a-15(f) and 15d-15(f) for the registrant and we have:

     a)   Designed such disclosure controls and procedures, or caused
          such internal control procedures to be designed under our
          supervision, to ensure that material information relating to
          the registrant, including its consolidated subsidiaries, is
          made known to us by others within those entities,
          particularly during the period in which this quarterly report
          is being prepared;

     b)   Designed such internal control over financial reporting, or
          caused such internal control over financial reporting to be
          designed under our supervision, to provide reasonable
          assurance regarding the reliability of financial reporting
          and the preparation of financial statements for external
          purposes in accordance with generally accepted accounting
          principles;

     c)   Evaluated the effectiveness of the registrant's disclosure
          controls and procedures and presented in this report our
          conclusions about the effectiveness of the disclosure
          controls and procedures, as of the end of the period covered
          by this report based on such evaluation; and

     d)   Disclosed in this report any change in the registrant's
          internal control over financial reporting that occurred
          during the registrant's most recent fiscal quarter (the
          registrant's fourth fiscal quarter in the case of an annual
          report) that has materially affected, or is reasonably likely
          to materially affect, the registrant's internal control over
          financial reporting; and

5.   The registrant's other certifying officers and I have disclosed,
     based on our most recent evaluation of internal control over
     financial reporting, to the registrant's auditors and the audit
     committee of registrant's board of directors (or persons performing
     the equivalent function):

     a)   all significant deficiencies and material weaknesses in the
          design or operation of internal control over financial
          reporting which are reasonably likely to adversely affect the
          registrant's ability to record, process, summarize and report
          financial information; and

     b)   any fraud, whether or not material, that involves management
          or other employees who have a significant role in the
          registrant's internal control over financial reporting.


Date:     August 13, 2003


/s/Craig R. Mackus
Craig R. Mackus
Vice President-Finance and Secretary