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Exhibit 31.2 EAGLEPICHER HOLDINGS, INC. AND ITS SUBSIDIARIES
CERTIFICATION PURSUANT TO RULE 13a-14(a)/15d-14(a)
OF THE SECURITIES EXCHANGE ACT OF 1934, As Amended I, Thomas R. Pilholski, certify that: 1.       I have reviewed this annual report on Form 10-K of EaglePicher Holdings, Inc.,
EaglePicher Incorporated, Daisy Parts, Inc., Carpenter Enterprises, Inc., EaglePicher Far East,
Inc., EaglePicher Filtration & Minerals, Inc., EaglePicher Technologies, LLC, EaglePicher
Automotive, Inc. and EaglePicher Pharmaceutical Services, LLC; 2.       Based on my knowledge, this annual 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 annual report; 3.       Based on my knowledge, the financial statements, and other financial information
included in this annual 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 annual report; 4.       The registrants other certifying officer 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)) for the registrant and we have: (a) designed such disclosure controls and procedures, or caused such disclosure controls and
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 annual report is being prepared; (b) 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 (c) 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. 5.       The registrants other certifying officer 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
functions): (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. /s/ Thomas R. Pilholski
    
    Date: March 14, 2005Thomas R. Pilholski, Senior Vice President
and Chief Financial Officer