EXHIBIT 99.4

                LETTER TO REGISTERED HOLDERS AND DTC PARTICIPANTS
                 REGARDING THE TENDER OF ANY AND ALL OUTSTANDING
                          9 3/4% SENIOR NOTES DUE 2013

                                       OF

                            EAGLEPICHER INCORPORATED
                PURSUANT TO THE PROSPECTUS DATED __________, 2003

         THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW
YORK CITY TIME, ON __________, 2003, UNLESS EXTENDED (THE "EXPIRATION DATE").

                                                                __________, 2003

To Registered Holders and DTC Participants:

         EaglePicher Incorporated, an Ohio corporation ("EaglePicher") is
offering to exchange, upon and subject to the terms and conditions set forth in
the prospectus, dated __________, 2003, and the letter of transmittal, $1,000
principal amount of its 9 3/4% Senior Notes due 2013, which have been registered
under the Securities Act of 1933, as amended, for each $1,000 principal amount
of its outstanding 9 3/4% Senior Notes due 2013, of which $250,000,000 aggregate
principal amount is outstanding.

         In connection with the exchange offer, we are requesting that you
contact your clients for whom you hold outstanding notes registered in your name
or in the name of your nominee, or who hold outstanding notes registered in
their own names. EaglePicher will not pay any fees or commissions to any broker,
dealer or other person in connection with the solicitation of tenders pursuant
to the exchange offer. However, you will, upon request, be reimbursed for
reasonable out-of-pocket expenses incurred in connection with soliciting
acceptances of the exchange offer. EaglePicher will pay or cause to be paid all
transfer taxes applicable to the exchange of outstanding notes pursuant to the
exchange offer, except as set forth in the prospectus and the letter of
transmittal.

         For your information and for forwarding to your clients, we are
enclosing the following documents:

         1.       The prospectus dated __________, 2003;

         2.       The letter of transmittal for your use in connection with the
                  tender of the outstanding notes and for the information of
                  your clients;

         3.       The notice of guaranteed delivery to be used to accept the
                  exchange offer if the outstanding notes and all other required
                  documents cannot be delivered to the exchange agent prior to
                  the Expiration Date; and

         4.       A form of letter which may be sent to your clients for whose
                  account you hold outstanding notes registered in your name or
                  the name of your nominee, with space provided for obtaining
                  such clients' instructions with regard to the exchange offer.

         To participate in the exchange offer, a beneficial holder must either:

     -    cause to be delivered to Wells Fargo Bank, National Association (the
          "exchange agent"), at the address set forth in the letter of
          transmittal, definitive certificated notes representing outstanding
          notes in proper form



          for transfer together with a duly executed and properly completed
          letter of transmittal, with any required signature guarantees and any
          other required documents; or

     -    cause a DTC Participant to tender such holder's outstanding notes to
          the Exchange Agent's account maintained at the Depository Trust
          Company ("DTC") for the benefit of the Exchange Agent through DTC's
          Automated Tender Offer Program ("ATOP"), including transmission of a
          computer-generated message that acknowledges and agrees to be bound by
          the terms of the letter of transmittal.

         By complying with DTC's ATOP procedures with respect to the exchange
offer, the DTC Participant confirms on behalf of itself and the beneficial
owners of tendered outstanding notes all provisions of the letter of transmittal
applicable to it and such beneficial owners as fully as if it completed,
executed and returned the letter of transmittal to the exchange agent.

         You will need to contact those of your clients for whose account you
hold definitive certificated notes or book-entry interests representing
outstanding notes and seek their instructions regarding the exchange offer.

         If holders of outstanding notes wish to tender, but it is impracticable
for them to forward their certificates for outstanding notes prior to the
expiration of the exchange offer or to comply with the book-entry transfer
procedures on a timely basis, a tender may be effected by following the
guaranteed delivery procedures described in the prospectus and the letter of
transmittal.

         Any inquiries you may have with respect to the exchange offer, or
requests for additional copies of the enclosed materials, should be directed to
the exchange agent for the outstanding notes, at its address and telephone
number set forth on the front of the letter of transmittal.

                                   Very truly yours,

                                   EaglePicher Incorporated

         NOTHING HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU OR ANY
OTHER PERSON AS AN AGENT OF EAGLEPICHER OR THE EXCHANGE AGENT, OR AUTHORIZE YOU
OR ANY OTHER PERSON TO USE ANY DOCUMENT OR MAKE ANY STATEMENTS ON BEHALF OF
EITHER OF THEM WITH RESPECT TO THE EXCHANGE OFFER, EXCEPT FOR STATEMENTS
EXPRESSLY MADE IN THE PROSPECTUS OR THE LETTER OF TRANSMITTAL.

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