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                                                              Exhibit 10.29
                                                              -------------




                                     (LOGO)

                              MRG (ZAMBIA) LIMITED
         PO BOX N10677, IBM BUILDING, WEST BAY STREET, NASSAU, BAHAMAS

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                 COBALT CONCENTRATES SALES CONTRACT NO: S-98488
                          Thursday 24th September 1998

BETWEEN

MRG (ZAMBIA) LIMITED, PO Box N10677, IBM Building, West Bay Street, Nassau,
Bahamas (herein called Seller) and OM Group, Inc. 811 Sharon Drive, Westlake, OH
44145-1522, USA (herein called Buyer)

WHEREAS
Seller has purchased 22,000 WMT of Nchanga grade cobalt concentrates from
Zambian Consolidated Copper Mines Limited (ZCCM) under the terms of a purchase
contract dated 12th September 1998 and has by 18th September 1998 received a
holding certificate from ZCCM for 15,000 wet metric tonnes of concentrates and
Seller wishes to sell these concentrates for treatment over a period of time, 
And
Buyer is willing to purchase and pre-pay the cobalt concentrates under the terms
and conditions stipulated as below:

DEFINITIONS

Contract       -shall mean this document
Concentrates   -shall mean Nchanga cobalt concentrates produced at and 
                originating from ZCCM Concentrator in Nchanga
DMT            -Dry metric tonne
WMT            -Wet metric tonne
Pound          -shall mean 16 ounces avoirdupois
Metric Tonne   -shall mean 2.204.62 Pounds or 1,000 kilograms
Dollar or $    -shall refer to United States Dollars, the lawful currency of the
                United States of America
All weights shall be plus/minus 5% in Seller's option

ARTICLE 1:     MATERIAL
               Concentrates containing an average of
               **

ARTICLE 2:     QUANTITY: 
               Approximately 15,000 to Approximately 22,000 WMT of concentrates
               in Seller's option.

ARTICLE 3:     COUNTRY OF ORIGIN
               Republic of Zambia

ARTICLE 4:     PACKING
               in bulk

** Confidential treatment has been requested with respect to certain
   information contained within this document. Confidential portions are omitted
   and filed separately with the Securities and Exchange Commission pursuant to 
   Rule 24b-2 of the Securities and Exchange Act of 1934.


                                  Page 1 of 6
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OM Group, Inc.                                     Thursday 24th September 1998
Sales Contract S 98488                                              Page 2 of 6


ARTICLE 5:     DELIVERY
               DDU Durban, South Africa by train. Seller undertakes that a
               cumulative minimum of 12,000 WMT shall arrive in Durban by latest
               31st October 1998. Any balance outstanding shall arrive in Durban
               before 15th December 1998. All delivery dates are subject to the
               availability of rail wagons and the performance of the railway
               companies responsible for the movement of the concentrates from
               Zambia to Durban.

               A Load Port Surveyor, appointed by the Seller at the Seller's
               cost, shall sample the concentrates, determine the moisture and
               carry out a draught weight survey of the material on loading on
               the ocean vessel. The Load Port Surveyor to be at Seller's choice
               either Alex Stewart International Corporation BV; A H Knight
               International Limited or Laboratory Services International B.V.
               or by any other mutually agreed third party.

ARTICLE 6:     PAYABLE METALS
               ** of the final assayed cobalt content established as per the
               procedures in Article 14 below is payable
               ** of the final assayed copper content established as per the
               procedures in Article 14 below is payable

ARTICLE 7:     PRICES
               Cobalt Price:
               Payable Cobalt price is ** of the base price of Cobalt.
               The base price of Cobalt is ** of the 99.3% Low Cobalt
               quotation published by London Metal Bulletin over the month of
               the quotation period (QP)
               Copper Price:
               Payable Copper price is ** of the base price of Copper.
               The base price of Copper is ** of the LME Copper cash  price 
               published by London Metal Bulletin over the month of the
               quotation period (QP)

               The minimum revenue due to the Seller under this contract shall
               be **.

ARTICLE 8:     QUANTITY PER LOT
               Buyer commits to finalise the price for the concentrates as
               follows:

               Lot A: The QP for 1/4 of the total delivered quantity to be
                      December 1998;
                        Buyer has the right to amend the quantity, subject to
                        the minimum quantity of 1/6th of the total delivered
                        quantity under this contract, latest 5th January 1999;

               Lot B: The QP for 1/4 of the total delivered quantity to be
                      January 1999;
                        Buyer has the right to amend the quantity, subject to
                        the minimum quantity of 1/6th of the total delivered
                        quantity under this contract, latest 5th February 1999;

               Lot C: The QP for 1/4 of the total delivered quantity to be
                      February 1999;
                        Buyer has the right to amend the quantity, subject to
                        the minimum quantity of 1/6th of the total delivered
                        quantity under this contract, latest 5th March 1999;

               Lot D: The QP for 1/4 of the total delivered quantity to be
                      March 1999;
                        Buyer has the right to amend the quantity, subject to
                        the minimum quantity of 1/6th of the total delivered
                        quantity under this contract, latest 5th April 1999;

               Lot E: (Depending on whether Buyer has made any quantity
                      declarations)

** Confidential treatment has been requested with respect to certain
   information contained within this document. Confidential portions are omitted
   and filed separately with the Securities and Exchange Commission pursuant to 
   Rule 24b-2 of the Securities and Exchange Act of 1934.

                                  Page 2 of 6

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OM Group, Inc.                                      Thursday 24th September 1998
Sales Contract S 98488



               The QP for 1/4 of the total delivered quantity, or for the
               remaining quantity, whichever is lower to be April 1999;

               Buyer has the right to amend the quantity, subject to the minimum
               quantity of 1/6th of the total delivered quantity under this
               contract, latest 5th May 1999;


               Lot F: (Depending on whether Buyer has made any quantity
                      declarations)

               The QP, for the remaining quantity, to be May 1999;

               All declarations under this Article shall be made in writing by
               fax.

               Both parties acknowledge that the Seller has the right to
               exercise the "Liquidation" of this contract as per Article 11
               below which would alter the terms of this Article.

ARTICLE 9:     QUOTATION PERIOD (QP)
               The quotation period for payable cobalt and copper for:-
               Lot A: to be December 1998
               Lot B: to be January 1999
               Lot C: to be February 1999
               Lot D: to be March 1999
               Lot E: (if applicable) to be April 1999
               Lot F: (if applicable) to be May 1999


               Both parties acknowledge that the Seller has the right to
               exercise the "Liquidation" of this contract as per Article 11
               below which would alter the terms of this Article.

ARTICLE 10:    PAYMENT
               Up front payment
               Buyer will make a provisional payment to a maximum of ** at the 
               rate of ** for each 1000 WMT (scale pro-rata) of concentrates 
               delivered DDU Durban, South Africa immediately against 
               presentation of the following documents and upon arrival of the 
               concentrates by train in Durban:

               a)   Either in Seller's option Railway Consignment Note endorsed
                    to Buyer; or Delivery order;
               b)   Seller's Provisional Commercial Invoice
               c)   Seller's Certificate of Provisional Weight and Provisional
                    Assay (which will be based on figures established either by
                    ZCCM or by an independent surveyor in Seller's option).

               Final Payment
               The Seller will issue the final invoice for each Lot when the
               weight, analysis and final prices are known. For each Lot a
               portion of the up front, provisional payment, will be deducted
               from the final invoice calculated using the following formula:

               Quantity of Lot being finalised X Total $ amount of Up front
               Provisional payment Total quantity of delivered material


ARTICLE 11:    LIQUIDATION
               Buyer and Seller have agreed that Seller has the sole right, by
               giving written notice to Buyer, to price the full quantity
               shipped but not yet finally priced, in which case Buyer will pay
               the remaining open balance at once based on the terms of this
               contract with the exception that:-

               a)   the quotational period shall be the month of the Seller's
                    written notice; and

** Confidential treatment has been requested with respect to certain
   information contained within this document. Confidential portions are omitted
   and filed separately with the Securities and Exchange Commission pursuant to 
   Rule 24b-2 of the Securities and Exchange Act of 1934.

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OM Group, Inc.                                      Thursday 24th September 1998
Sales Contract S 98488                                               Page 4 of 6



                     b) the base prices for cobalt and copper shall be 
                        discounted by **.

ARTICLE 12:    PAYMENT TERMS
               The Final payments will be made by telegraphic transfer as
               follows:
               Lot A: for value 15th January 1999;
               Lot B: for value 15th February 1999;
               Lot C: for value 15th March 1999;
               Lot D: for value 15th April 1999;
               Lot E: (if applicable) for value 14th May 1999;
               Lot F: (if applicable) for value 15th June 1999;

ARTICLE 13:    WEIGHING, SAMPLING AND MOISTURE DETERMINATION
               Weighing and sampling is to be done for each shipment on arrival
               to Kokkola, Finland. Each Shipment is to be divided for such
               purposes into 500 WMT lots. Weighing, sampling and moisture
               determination to be performed at Buyer's expense. The Seller will
               be represented at their own cost by either Alex Stewart
               International Corporation BV; A H Knight International Limited or
               Laboratory Services International B.V. ("The Independent
               Surveyor") in Seller's option.

               The weight less the moisture (Net Dry Weight) established during
               this operation at Kokkola as certified by he Independent
               Surveyor, shall be the final settlement weight

ARTICLE 14:    ASSAYS
               The pre-shipment Seller's Certificate of Provisional Assay shall
               be final for all purposes under this contract except that the
               Cobalt and Copper content for calculation of the final invoice
               value for settlement purposes shall be determined by the assay
               exchange as follows:

               The sample shall be split into 4 portions. One for each party,
               one for umpire, and one for reserve. The umpire sample and
               reserve sample shall be sealed by Buyer and by the Independent
               Surveyor and shall be stored at the Independent Surveyor's
               laboratory.

               The assays shall be made independently by Seller and Buyer and
               the results shall be exchanged by crossing mail on the 30th
               calendar date after completion of sampling (as evidenced by the
               date of the Independent Surveyor's sampling report). Buyer and
               Seller may mutually agree on an earlier date for exchange.

               Should the difference between Buyer's and Seller's results be not
               more than
                              0 20% for CO
                              0.20% for CU
               the arithmetic mean of the results shall be taken as the agreed
               assay for the purposes of final payment. In case of greater
               difference, the officially sealed umpire samples may be refereed
               to an umpire laboratory at the request of either party. The
               umpire laboratory shall be as follows:

               a) In the event that Alex Stewart International BV represents
               Buyer for weighing, sampling and moisture determination as per
               Article 13 above then the Umpire shall be A H Knight
               International Limited;

               b) In the event that AH Knight represents Buyer for weighing,
               sampling and moisture determination as per Article 13 above then
               the Umpire shall be Laboratory Services International BV;

** Confidential treatment has been requested with respect to certain
   information contained within this document. Confidential portions are omitted
   and filed separately with the Securities and Exchange Commission pursuant to 
   Rule 24b-2 of the Securities and Exchange Act of 1934.

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OM Group, Inc.                                      Thursday 24th September 1998
Sales Contract S 98488                                               Page 5 of 6



                c) In the event that Laboratory Services International BV
                represents Buyer for weighing, sampling and moisture
                determination as per Article 13 above then the Umpire shall be
                Alex Stewart International BV;

                In the case of umpire the final assay shall be the average of
                the umpire assay and the one being nearest to it.

                The cost for the umpire shall be borne by the party whose
                result is farthest from he umpire, but should the umpire's
                result be the exact mean of the two then the cost shall be borne
                equally by the two parties

ARTICLE 15:     DELIVERY ADDRESS
                Durban, South Africa

 ARTICLE 16:    FORWARDING AGENT IN DURBAN
                Rennies at:
                       Bluff Mechanical Appliance
                       PO Box 21273
                       Bluff 4036
                       Durban
                       South Africa.

ARTICLE 17      SHIPPING MARKS
                All shipping documents are to show the following marks: 0MG 
                Kokkola Chemicals, Oy No........

ARTICLE 18 LOSS IN TRANSIT TO DURBAN AND/OR KOKKOLA
                Buyer acknowledges that the Seller is delivering material which
                is produced in Zambia and is subject to risks of theft, loss or
                damage in transit from Zambia to Durban. In the event that
                material is stolen, or is lost or damaged in transit Buyer
                agrees that Seller shall not have the obligation to provide
                substitute material and that such quantities may be deleted from
                this contract without penalty. In event that Seller claims for
                relief under this Article Seller agrees to provide Buyer with
                written evidence of any losses in transit (such as Insurance
                Loss Reports).

                In the event that material is stolen, or is lost or damaged in
                transit from Durban to Kokkola Buyer shall pay to Seller ** of
                the Seller's Provisional Invoice value in final settlement.


ARTICLE 19      APPLICABLE LAW
                This contract will be governed and construed in accordance with
                English laws. This contract constitutes the entire agreement
                between the parties pertaining to the subject mailer contained
                herein.


** Confidential treatment has been requested with respect to certain
   information contained within this document. Confidential portions are omitted
   and filed separately with the Securities and Exchange Commission pursuant to 
   Rule 24b-2 of the Securities and Exchange Act of 1934.

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OM Group, Inc.                                      Thursday 24th September 1998
Sales Contract S 98488                                               Page 6 of 6





ARTICLE 20      NOTICES

                All notices, requests for information, complaint and other
                communication which is required or may be given under this
                contract shall be in writing delivered personally or sent by
                registered mail, or telefax at the following addresses or to
                other such address as a party may notify the other party in
                writing.


In witness hereof the parties have caused this Contract to be executed by their
duly authorised representatives.


SIGNED: 
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/s/ Rami Y. Weisfisch
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MRG (ZAMBIA) Limited, Authorised signatory.


SIGNED:
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/s/ Eugene Bak
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OM Group, Inc, Authorised signatory


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