EXHIBIT 99.5

                        WARRANTS TO PURCHASE COMMON STOCK
                                       OF
                             OGLEBAY NORTON COMPANY
                   PURSUANT TO THE PROSPECTUS DESCRIBED BELOW
             AND THE SECOND AMENDED JOINT PLAN OF REORGANIZATION OF
               ONCO INVESTMENT COMPANY, OGLEBAY NORTON COMPANY AND
                    CERTAIN SUBSIDIARIES DATED JULY 30, 2004

               THE EXERCISE PERIOD FOR THE WARRANTS WILL EXPIRE AT
   5:00 P.M., EASTERN TIME, ON [_________ __], 2005 (THE "EXPIRATION DATE").

                                                              [_______ __], 2005

To Brokers, Dealers, Commercial Banks,
   Trust Companies and other Nominees:


      Enclosed for your consideration, among other documents, is a Prospectus
dated [_______ __], 200[_] (together with any amendments or supplements thereto,
the "Prospectus") relating to the issuance and distribution by reorganized
Oglebay Norton Company ("Reorganized Oglebay") to holders of record of shares of
common stock ("Old Common Stock") of Oglebay Norton Company before
reorganization ("Oglebay") as of the close of business on November 17, 2004 (the
"Distribution Record Date") of warrants (the "Warrants") (CUSIP No. 677007 11 4)
to acquire shares of common stock of Reorganized Oglebay (the "New Common
Stock") (CUSIP No. 677007 20 5) in accordance with the terms of the Second
Amended Joint Plan of Reorganization of ONCO Investment Company, Oglebay and
Certain Subsidiaries, dated July 30, 2004 (as further amended or modified, the
"Plan"), which was confirmed by an order of the United States Bankruptcy Court
for the District of Delaware entered on November 17, 2004. Reorganized Oglebay
emerged from bankruptcy on [__________ __], 2005 (the "Effective Date"). Under
the Plan, on the Effective Date, certificates formerly representing shares of
Old Common Stock were cancelled, and each record holder of Old Common Stock on
the Distribution Record Date received one Warrant for each share of Old Common
Stock then held. Each Warrant represents the right to purchase one-tenth
(1/10th) of a fully paid and nonassessable share of New Common Stock. The
Warrants are exercisable at an exercise price of $10.00 per share of New Common
Stock (the "Exercise Price"). The Warrants entitle the holder thereof to
purchase at the Exercise Price one share of New Common Stock for each ten (10)
Warrants held. Except in the case where a holder of Warrants is exercising all
Warrants then held, shares of New Common Stock may be purchased only pursuant to
the exercise of Warrants in integral multiples of ten (10). Reorganized Oglebay
will not issue any fractional shares of New Common Stock upon the exercise of
the Warrants. If any fraction of a share of New Common Stock would be issuable
upon the exercise of all Warrants then held by a holder of Warrants, such
Warrant exercise will be rounded to the nearest whole share (up or down), with
half shares being rounded up. The Warrants are transferable; provided, however,
that any Warrants held by an affiliate of Reorganized Oglebay may generally only
be resold pursuant to a valid exemption under the Securities Act of 1933. The
Warrants are exercisable by subsequent holders thereof subject to certain
conditions.


      Only registered holders of the Warrants and proper transferees of the
Warrants may exercise the Warrants. Accordingly, we are asking you to contact
your clients for whom you held Old Common Stock registered in your name or the
name of your nominee to obtain instructions with respect to the exercise of the
Warrants.








      WE URGE YOU TO CONTACT YOUR CLIENTS AS PROMPTLY AS POSSIBLE. PLEASE NOTE
THAT THE WARRANTS WILL EXPIRE AT 5:00 P.M., EASTERN TIME, ON THE EXPIRATION
DATE.


      Properly completed forms of election to purchase and payment in full of an
amount equal to the Exercise Price multiplied by the number of shares of New
Common Stock purchased must be received by the Warrant Agent prior to 5:00 p.m.,
Eastern Time, on the Expiration Date in order to exercise the Warrants.


      Any requests for additional copies of the enclosed material and any
inquiries you may have with respect to the exercise or transfer of the Warrants
should be addressed to Wells Fargo Bank, N.A. as follows:



Registered and Certified Mail:                   Regular Mail or Courier:            In Person by Hand Only:
- -----------------------------                    -----------------------             ----------------------
                                                                               
Wells Fargo Bank, N.A.                           Wells Fargo Bank, N.A.              Wells Fargo Bank, N.A.
Corporate Trust Operations                       Corporate Trust Operations          Corporate Trust Services
MAC N9303-121                                    MAC N9303-121                       Northstar East Bldg-12th Floor
P.O. Box 1517                                    6th & Marquette Avenue              608 2nd Avenue South
Minneapolis, MN 55480                            Minneapolis, MN 55479               Minneapolis, MN 55402

Telephone: (800) 344-5128 or (612) 667-9764
Fax:  (612) 667-6282


                                               Very truly yours,

                                               OGLEBAY NORTON COMPANY

NOTHING HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU OR ANY OTHER
PERSON AS AN AGENT OF THE COMPANY, ANY AFFILIATE OF THE COMPANY OR THE WARRANT
AGENT OR AUTHORIZE YOU OR ANY OTHER PERSON TO GIVE ANY INFORMATION OR MAKE ANY
STATEMENTS ON BEHALF OF ANY OF THEM WITH RESPECT TO THE WARRANTS, EXCEPT FOR
STATEMENTS EXPRESSLY MADE IN THE ENCLOSED DOCUMENTS.

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