<PAGE>   1
                                                                  EXHIBIT 10.19


Certain portions of this exhibit have been deleted and confidentiality filed
with the Securities and Exchange Commission pursuant to a confidential
treatment request under Rule 406 under the Securities Act of 1933, as amended.
The confidential portions of the exhibit that have been deleted are indicated
by "[***]" inserted in place of such confidential information. In addition, all
exhibits to this exhibit have been deleted and confidentially filed with the
Securities and Exchange Commission.



                                SUPPLY AGREEMENT



         THIS AGREEMENT, made and entered into as of the 1 day of January,
2000, by and between UCAR CARBON COMPANY INC., a Delaware corporation with
offices at Highway 7, Santa Fe Pike, Columbia, Tennessee 38401 ("Seller") and
SIMCALA INC., P.O. Box 68, Ohio Ferro-Alloys Road, Mt. Meigs, Alabama 36057
("Buyer").

         WHEREAS, Buyer operates a silicon metal plant in Mt. Meigs, Alabama
("Mt. Meigs") where it uses carbon electrodes ("electrodes"); and

         WHEREAS, Buyer has purchased some of its electrodes in the past from
Seller; and

         WHEREAS, Buyer desires to enter into a long term Supply Agreement with
the Seller for all of the electrodes which Buyer uses at its Mt. Meigs Plant,
and Seller is willing to supply Buyer with its requirements for electrodes, all
as set forth herein below.



                              W I T N E S S E T H:



1)       Electrodes: Seller hereby agrees to sell and deliver to Buyer, and
         Buyer hereby agrees to purchase and accept from Seller, during the
         term of this Agreement, [***]% of Buyer's annual requirements of
         electrodes and connecting pins. The electrode and connecting pin
         specifications are described in Exhibit A.

2)       Price: The price of electrodes for the duration of this agreement, is
         set forth in Exhibit B.

3)       Weights: All electrodes shipped under this Agreement shall be weighed
         by certified truck or railroad scales, or with the consent of the
         other party, by either Buyer's or Seller's certified scales.

4)       Term: The term of this Agreement is set forth in Exhibit B.

5)       Delivery: Seller shall deliver all electrodes sold hereunder to Buyer
         FOB Buyer's Mt. Meigs facility, with title and risk of loss passing
         Buyer at that point. Seller shall pay all freight charges for
         electrodes.

6)       Payment: Payment in U.S. dollars for electrodes hereunder is due
         thirty (30) days from date of receipt of invoice for each shipment.

7)       Warranty:


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<PAGE>   2

         A.       Seller warrants that the electrodes delivered hereunder will
                  conform to the specifications set forth in Exhibit A, as
                  applicable, subject to such other specifications as may be
                  agreed upon, in writing, by and between the parties hereto.

         B.       Seller warrants that the use or sale of each electrode
                  delivered hereunder will not infringe upon any claim of any
                  United States patent covering the electrodes, but Seller does
                  not warrant against infringement by reason of the use of such
                  product in combination with other articles or material or in
                  the practice of any process other than any process for which
                  such product has been expressly designed or sold by Seller
                  hereunder.

         C.       THERE ARE NO EXPRESS WARRANTIES BY SELLER OTHER THAN THOSE
                  SPECIFIED IN THIS PARAGRAPH 7. NO WARRANTIES BY SELLER (OTHER
                  THAN WARRANTY OF TITLE AS PROVIDED BY THE UNIFORM COMMERCIAL
                  CODE) SHALL BE IMPLIED OR OTHERWISE CREATED AT LAW OR IN
                  EQUITY, INCLUDING, BUT NOT LIMITED TO, WARRANTY OF
                  MERCHANTABILITY AND WARRANTY OF FITNESS FOR A PARTICULAR
                  PURPOSE. Without limiting the generality of the foregoing,
                  Buyer assumes all risk and liability for the results obtained
                  by the use of any products delivered hereunder in combination
                  with other articles or material or in the practice of any
                  process.

         D.       Seller's liability under the warranties specified in this
                  paragraph 7 shall be limited to the repair or (at Seller's
                  option) the replacement, or refund of the purchase price, of
                  any product delivered hereunder which is in breach of
                  warranty. No claims of any kind with respect to any product
                  covered by this document, whether as to product delivered or
                  for delayed delivery or non-delivery of products and whether
                  or not based on negligence or warranty, shall be greater in
                  aggregate amount than the purchase price of the product in
                  respect of which such claims are made. In no event shall
                  either party be liable for special, indirect or consequential
                  damages, whether or not caused by or resulting from the
                  negligence of such party.

8)       Force Majeure: Neither Buyer nor Seller shall be liable for any delay
         or failure to perform hereunder caused by contingencies beyond their
         reasonable control, including but not limited to, acts of God, fire,
         flood, wars, sabotage, accidents, labor disputes (whether or not such
         disputes are within the power of the party to settle), governmental
         laws, rules, ordinances and regulations, whether valid or invalid,
         (including, but not limited to, import or export prohibitions or
         priorities, requisitions, allocations and price adjustment
         restrictions), inability to obtain material, equipment, or
         transportation and any other similar or dissimilar occurrence. In the
         event any such contingency affects only a part of Seller's capacity to
         produce and/or deliver electrodes, Seller will allocate production
         and/or deliveries among the requirements of all its regular customers
         and Seller's own requirements in such manner as Seller shall deem to
         be fair and equitable. In no event shall Seller be obligated to
         purchase raw materials or electrodes from others in order to enable it
         to deliver electrodes to Buyer hereunder.


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9)       Assignment: Any assignment of this Agreement without the prior written
         consent of the other party shall be void.

10)      Governing Law: The laws of the State of Delaware shall govern the
         validity, interpretation and performance of this Agreement.

11)      Arbitration: Disputes hereunder shall be finally settled by
         arbitration in Delaware under the Rules of the American Arbitration
         Association.

12)      Notices: All notices or other communications required hereunder shall
         be deemed given when sent registered or certified mail, postage
         prepaid, addressed to the other party at the address set forth below,
         or at such other address as the other party shall have heretofore
         designated in writing. The Post Office receipt showing the date of
         mailing shall be prima facie evidence of mailing.

         If to Seller:                      UCAR Carbon Company, Inc.
                                            Highway 7
                                            Santa Fe Pike
                                            Columbia, Tennessee 38401
                                            Attention: J.D. Haworth

         If to Buyer:                       SIMCALA, Inc.
                                            P.O. Box 68
                                            Ohio Ferro-Alloys Road
                                            Mt. Meigs, Alabama 36057
                                            Attention: C.E. Broadwine



13)      Amendment: No amendment of or modification to this Agreement shall be
         effective unless made in writing and signed by both parties.



         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed by their respective officers thereunto duly authorized as of the
day and year first above written.

WITNESS:                            UCAR CARBON COMPANY INC.

--------------------------------    By: /s/ Joseph D. Haworth

                                    Title:  Director of Specialty Metals Market


WITNESS:                            SIMCALA, INC.

--------------------------------    By:  /s/ C.E. Boardwine

                                    Title: President and CEO


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<PAGE>   4

EXHIBIT A

CARBON ELECTRODE AND GRAPHITE CONNECTING PIN MATERIAL SPECIFICATION:

<TABLE>
<CAPTION>
------------------- ----------------- ----------------- ----------------- ----------------- --------------------
                                                        Socket
                                                        Dimensions
                                                        Machined with
Catalog             Diameter          Length            2" lead acme                        Specific
Number              Dimensions        Dimensions        thread            Bulk Density      Resistance
------------------- ----------------- ----------------- ----------------- ----------------- --------------------
<S>                 <C>               <C>               <C>               <C>               <C>
                    Max:  [***]"      Max:  [***]"      Diameter: [***]"  [***] g/cc

S452330             Min:  [***]"      Min:  [***]"      Length:   [***]"   min             [***](mu)(OMEGA)m max
------------------- ----------------- ----------------- ----------------- ----------------- --------------------
                                      Max:  [***]"                        [***] g/cc
P2330C                                Min:  [***]"                         min             [***] (mu)(OMEGA)m max
------------------- ----------------- ----------------- ----------------- ----------------- --------------------
</TABLE>

RECEIVING INSPECTION:      Buyer shall verify factory order number and length
                           against tally sheet.

INDIVIDUAL AUTHORIZED      (As designated by customer)
TO APPROVE RECEIPT:

PACKAGING:                 Electrodes secured to truck bed on cradles or
                           pallets.


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<PAGE>   5

EXHIBIT B

CARBON ELECTRODE PRICE:

1.       The price beginning January 1, 2000 through June 30, 2000, is [***]
         ([***]) cents per pound delivered to Buyer's plant.

2.       The price in effect beginning July 1, 2000 through December 31, 2000,
         is [***] ([***]) cents per pound delivered to Buyer's plant.

3.       The price beginning January 1, 2001 through December 31, 2001, is
         [***] ([***]) cents per pound delivered to Buyer's plant.

4.       The price in effect beginning January 1, 2002 through December 31,
         2002, shall be no more than [***] percent ([***]%) above or below the
         price delivered to Buyer's plant in previous year. Subject to the
         foregoing, the electrode price change beginning on January 1, 2002,
         will be [***] of the percentage change in published average silicon
         metal prices in the previous twelve (12) months. Buyer and Seller will
         mutually agree upon published silicon prices for this calculation.

AGREEMENT DURATION: The initial term of this Agreement shall be for a period of
thirty-six (36) months commencing on January 1, 2000 and terminating on
December 31, 2002.

By the end of each calendar year, the Buyer and Seller will meet to discuss the
possible extension of this supply agreement for another term.


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