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                                                                     EXHIBIT 9.1

                  VOTING TRUST AGREEMENT, dated as of November 16, 1998, by and
                  among each of the persons designated as a Shareholder on the
                  signature pages of this Agreement (each a "Shareholder" and
                  collectively, the "Shareholders") and Granaria Holdings
                  B.V., a Dutch corporation, as trustee (the "Trustee").




                  The Shareholders are respectively owners of shares of the
Class A (Voting) Common Stock, par value $0.01 per share (the "Common Stock"),
of Eagle-Picher Holdings, Inc., a Delaware corporation (the "Company") in the
amount set forth by their signature below.

                  With a view to the safe and competent management of the
Company in the interests of the Shareholders, and as contemplated by the
Shareholders' Agreement, dated October 15, 1998 (the "Shareholders' Agreement"),
the Shareholders desire to create this Voting Trust.

                  The Shareholders agree as follows:

                  1. TRANSFER OF STOCK TO TRUSTEE. Each of the Shareholders
assigns and delivers to the Trustee any certificate held by such Shareholder
representing shares of Common Stock owned by such Shareholder and shall do all
things necessary for the transfer of shares of Common Stock to the Trustee on
the books of the Company.

                  2. TRUSTEE TO HOLD SUBJECT TO AGREEMENT. The Trustee shall
hold the said shares of Common Stock so transferred to them for the common
benefit of the Shareholders, under the terms and conditions hereinafter set
forth.

                  3. ISSUANCE OF STOCK CERTIFICATES TO TRUSTEE. The Trustee
shall surrender to the proper officers of the Company for cancellation of all
certificates of Common Stock which shall be assigned and delivered to it as
hereinafter provided, and in their stead shall procure a new certificate(s)
issued to it as Trustee under this Agreement.

                  4. VOTING TRUST CERTIFICATES. The Trustee shall issue to each
of the Shareholders a Voting Trust Certificate for the number of shares
represented by the certificates of Common Stock by such Shareholder transferred
to the Trustee. Each such Voting Trust Certificate shall state that it is issued
under the Agreement, and shall set forth the nature and proportional amount of
the beneficial interest thereunder of the person to whom it is issued, and shall
be assignable, subject to the provisions of the Shareholders' Agreement, in the
manner of certificates of stock on books to be kept by the Trustee. The Trustee
shall keep a list of the shares of the Trust transferred to them, and shall also
keep a record of all Voting Trust Certificates issued or transferred on its
books, which records shall contain the names of the Voting Trust Certificate
holders and the number of shares of Common Stock represented by each such
certificate. Such list and record shall be open at all reasonable times to the
inspection upon the books of the Trustee by any Voting Trust Certificate holder.

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             The Voting Trust Certificate shall be substantially in the
following form:

                            VOTING TRUST CERTIFICATE

             This is to certify that the undersigned Trustee has received a
certificate or certificates issued in the name of _______________________,
evidencing the ownership of _______ shares of Class A Common Stock of
Eagle-Picher Holdings, Inc., a Delaware corporation (the "Company"), and that
such shares are held subject to all the terms and conditions of the Voting Trust
Agreement, dated as of November 16, 1998, by and between Granaria Industries
B.V., as Trustee, and certain shareholders of the Company. During the term of
the voting trust, the Trustee, or its successors, shall, as provided in said
agreement, possess and be entitled to exercise the voting power and otherwise
represent all of the said shares for all purposes, being agreed that no voting
right shall pass to the holder hereof by virtue of the ownership of this
certificate.

             Upon the termination of said voting trust, this certificate shall
be surrendered to the Trustee by the holder hereof upon delivery to such holder
of a stock certificate representing a like number of shares.

             The undersigned Trustee has executed this certificate as of the ___
day of __________________, ____.

                                      GRANARIA HOLDINGS, B.V., Trustee

                                      By: ________________________________


                  5. RESTRICTION ON TRANSFER. Each of the beneficiaries agrees
that during the term of this Agreement, the Voting Trust Certificates held by
them will not be sold or transferred except in accordance with the terms and
conditions of the Shareholders' Agreement, so long as such Agreement remains in
effect. The Voting Trust Certificates shall be regarded as stock of the Company,
within the meaning of any provision of the By-laws or other agreement (including
the Shareholders' Agreement) of the Company imposing conditions and restrictions
upon the sale of stock of the Company.

                  6. VOTING. It shall be the duty of the Trustee, and it shall
have full power and authority, and is hereby fully empowered and authorized, to
represent the holders of such Voting Trust Certificates and the Common Stock
transferred to the Trustee as aforesaid, and to vote upon said stock, as in the
judgment of the Trustee may be for the best interest of the Company, at all
meetings of the Shareholders of the Company, in the election of Directors and
upon any and all matters in question, which may be brought before such meetings,
as fully as any Shareholder might do if personally present.

                  7. LIABILITY. The Trustee shall use its business judgment in
voting upon the stock transferred to it, but shall not be liable for any vote
cast, or consent given, by it in the absence of gross negligence, bad faith,
self-dealing or willful misconduct.

                  8. DIVIDENDS. The Trustee shall collect and receive all
dividends that may accrue 



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upon the shares of Common Stock subject to this Trust, and shall divide the same
among the Voting Trust Certificate holders in proportion to the number of shares
respectively represented by their Voting Trust Certificates.

                  9. INDEMNITY. The Trustee shall be entitled to be indemnified
fully against all costs, charges, expenses and other liabilities properly
incurred by it in the exercise of any power conferred upon it by this Agreement;
and the Shareholders, and each of them hereby covenant with the Trustee that in
the event of the monies and securities in its hands being insufficient for that
purpose, the Shareholders and each of them will in proportion to the amount of
their respective shares and interests hold harmless and keep indemnified the
Trustee of and from all loss or damage which it may sustain or be put to by
reason of anything it may lawfully and in accordance with this Agreement do in
the execution of this Trust.

                  10. VACANCIES. In the event of the Trustee's resigning or
refusing or becoming unable to act, the Trustee shall appoint a Trustee or
Trustees to fill the vacancy or vacancies, and any person so appointed shall
thereupon be vested with all the duties, powers and authority of a Trustee
hereunder as if originally named herein. Prior to the commencement of its
duties, each original Trustee and each Trustee subsequently appointed shall sign
a copy of the Shareholders' Agreement, relating to the shares of the Company and
shall thus signify his consent to be bound thereby and his agreement to perform
the terms thereof. All of the terms, provisions and conditions of the
Shareholders' Agreement shall apply to all Trustees hereof and hereunder with
the same force and effect as if such Trustee had originally signed said
Shareholders' Agreement.

                  11. CONTINUANCE AND TERMINATION OF TRUST. The Trust hereby
created shall be continued until the later of Ninety-Nine (99) years from the
date hereof or such other term as the Committee of the Second Amended and
Restated Incentive Stock Plan of Eagle-Picher Industries, Inc., as amended,
shall determine, and shall then terminate, provided that this Voting Trust
Agreement shall terminate upon the occurrence of the events for termination set
forth in the Shareholders' Agreement. Upon termination of the Trust, the Trustee
shall, upon surrender of the Voting Trust Certificates by the respective holders
thereof, assign and transfer to them the number of shares thereby represented.

                  12. LEGEND. All Voting Trust Certificates issued by the
Trustee hereunder shall have endorsed thereon a statement that they are held in
accordance with and subject to the terms of the Shareholders' Agreement.

                  13. MISCELLANEOUS. (a) This Voting Trust Agreement is entered
into in accordance with the Shareholders' Agreement. In the event of a conflict
in the provisions of said Shareholders' Agreement, the provisions of said
Shareholders' Agreement shall prevail.

                  (b) An executed copy of this Agreement shall be filed with the
Secretary of the Company. The Shareholders shall cause the Company to furnish
free of charge to any shareholder thereof a copy of this Agreement upon written
request.

                  (c) Any and all notices, designations, consents, offers,
acceptances or any other communication provided for herein shall be made by hand
delivery, first-class mail (registered or 



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certified, return receipt requested), or overnight air courier guaranteeing next
day delivery to the address set forth on the signature page hereof. Any
Shareholder may change the address listed in the foregoing sentence by giving
written notice to the Company and the other Shareholders. Except as otherwise
provided in this Agreement, each such notice shall be deemed effective at the
time delivered by hand, if personally delivered; five business days after being
deposited in the mail, postage prepaid, if mailed; and the next business day
after timely delivery to the courier, if sent by overnight air courier
guaranteeing next day delivery.

                  (d) This Agreement may be executed in two or more
counterparts, each of which shall be deemed to be an original, but all of which
together shall constitute one and the same instrument.

                  (e) THIS AGREEMENT SHALL BE GOVERNED AND CONSTRUED IN
ACCORDANCE WITH THE LAW OF THE STATE OF OHIO WITHOUT REGARD TO CONFLICTS OF LAWS
PRINCIPLES.

                  (f) This Agreement shall be binding upon and shall inure to
the benefit of each of the Shareholders and their respective executors,
administrators and personal representatives and heirs and assigns.

                  IN WITNESS WHEREOF, the Shareholders and the Trustee have duly
executed this Agreement.

                                    TRUSTEE:
                                    --------


                                    Granaria Holdings B.V.


                                    By:
                                        ----------------------------------------
                                            Name:
                                            Title:


                                    SHAREHOLDERS:
                                    -------------


                                    --------------------------------------------
                                               (Signature)

                                    Name:
                                          --------------------------------------

                                    Address:
                                             -----------------------------------

                                             -----------------------------------

                                    Shares:
                                            ----------------------

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