EXHIBIT 10.1C


                       THIRD AMENDMENT TO CREDIT AGREEMENT

            THIS THIRD AMENDMENT TO CREDIT AGREEMENT, dated as of January 23,
2003 (this "Amendment"), is among STEEL DYNAMICS, INC. (the "Borrower"), the
Lenders (as defined below) signatories hereto, JPMORGAN CHASE BANK, as
administrative agent for the Lenders (in such capacity, the "Administrative
Agent"), GENERAL ELECTRIC CAPITAL CORPORATION, as Documentation Agent, and
MORGAN STANLEY SENIOR FUNDING, INC., as Arranger and Syndication Agent.

                              W I T N E S S E T H:

            WHEREAS, the Borrower, certain financial institutions and other
Persons (such capitalized term and other capitalized terms used in these
recitals to have the meanings set forth or defined by reference in Part I below)
from time to time parties thereto (collectively, the "Lenders"), JPMorgan Chase
Bank, as Collateral Agent, the Administrative Agent, General Electric Capital
Corporation, as Documentation Agent, and Morgan Stanley Senior Funding, Inc., as
Arranger and Syndication Agent, are parties to the Credit Agreement, dated as of
March 26, 2002, as amended by the First Amendment to Credit Agreement, dated as
of August 6, 2002, as waived by the Letter Waiver, dated as of October 6, 2002,
and as amended by the Second Amendment to Credit Agreement, dated as December
16, 2002 (such Credit Agreement, as so amended and waived, the "Existing Credit
Agreement");

            WHEREAS, the Borrower has requested that the Lenders amend the
Existing Credit Agreement as set forth below; and

            WHEREAS, the Lenders have agreed, subject to the terms and
conditions hereinafter set forth, to amend the Existing Credit Agreement in
certain respects (the Existing Credit Agreement, as so amended or otherwise
modified by this Amendment, being referred to as the "Credit Agreement");

            NOW, THEREFORE, in consideration of the premises and for other good
and valuable consideration (the receipt and sufficiency of which is hereby
acknowledged), the parties hereto hereby agree as follows:

                                     PART I
                                   DEFINITIONS

            SUBPART 1.1. Certain Definitions. The following terms (whether or
not underscored) when used in this Amendment shall have the following meanings
(such meanings to be equally applicable to the singular and plural forms
thereof):

            "Administrative Agent" is defined in the preamble.

            "Amendment" is defined in the preamble.

            "Borrower" is defined in the preamble.

            "Credit Agreement" is defined in the third recital.

            "Existing Credit Agreement" is defined in the first recital.

            "Third Amendment Effective Date" is defined in Subpart 3.1.

            "Lenders" is defined in the first recital.

            SUBPART 1.2. Other Definitions. Terms for which meanings are
provided in the Existing Credit Agreement are, unless otherwise defined herein
or the context otherwise requires, used in this Amendment with such meanings.

                                    PART II
                                   AMENDMENTS

            Effective on (and subject to the occurrence of) the Third Amendment
Effective Date, the Existing Credit Agreement is hereby amended in accordance
with this Part; except as so amended or otherwise modified by this Amendment,
the Existing Credit Agreement and the Loan Documents shall continue in full
force and effect in accordance with their terms.

            SUBPART 2.1. Amendment to Article I. Article I of the Existing
Credit Agreement is hereby amended in accordance with Subpart 2.1.1.

                  SUBPART 2.1.1. Section 1.01 of the Existing Credit Agreement
      is hereby amended by inserting the following new definitions therein in
      the appropriate alphabetical order:

                  "New Sales Subsidiary" means Steel Dynamics Sales North
            America, Inc., an Indiana corporation that is a newly-formed
            wholly-owned Subsidiary.

                  "Third Amendment" means the Third Amendment, dated as of
            January 23, 2003, to this Agreement among the Borrower, the
            Administrative Agent, General Electric Capital Corporation, as
            Documentation Agent, Morgan Stanley Senior Funding, Inc., as
            Arranger and Syndication Agent, and the Lenders parties thereto.

                  "Third Amendment Effective Date" is defined in Subpart 3.1 of
            the Third Amendment.

            SUBPART 2.2. Amendment to Article V. Article V of the Existing
Credit Agreement is hereby amended in accordance with Subparts 2.2.1 through
2.2.5.

                  SUBPART 2.2.1. Debt. Clause (b) of Section 5.02 of the
      Existing Credit Agreement is hereby amended by inserting immediately after
      the words "and its Subsidiaries" in the first line of sub-clause (iii)
      thereof the parenthetical "(other than the New Sales Subsidiary, except
      with respect to its Obligations under the Loan Documents)".


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                  SUBPART 2.2.2. Nature of Business. Clause (c) of Section 5.02
      of the Existing Credit Agreement is hereby amended by adding the following
      at the end thereof immediately before the period appearing therein:

      "or permit the New Sales Subsidiary to engage in any business activity
      other than purchasing on an arm's length basis for fair value inventory
      from the Borrower, receiving the transfer of accounts receivable from the
      Borrower (and the servicing of the same) and the sale by the New Sales
      Subsidiary of inventory in the ordinary course of business for cost plus a
      commercial margin to third party customers".

                  SUBPART 2.2.3. Asset Sales. Clause (e) of Section 5.02 of the
      Existing Credit Agreement is hereby amended by inserting immediately
      before the proviso at the end thereof the following new sub-clause (vi):

            "(vi) the transfer of accounts receivable and sale for fair value on
      an arm's length basis of inventory by the Borrower to the New Sales
      Subsidiary, subject, in all cases, to the Liens thereon granted by the
      Borrower under the Security Agreement."

                  SUBPART 2.2.4. Investments. Clause (f) of Section 5.02 of the
      Existing Credit Agreement is hereby amended by (a) deleting the
      punctuation mark "." appearing at the end of sub-clause (xi) thereof and
      inserting the punctuation mark ";" in replacement therefor and (b)
      inserting at the end thereof the following new sub-clause (xii):

            "(xii) Investments by the Borrower in the New Sales Subsidiary
      comprising (A) the transfer of accounts receivable referred to in Section
      5.02(e)(vi), all subject to the Liens thereon granted by the Borrower
      under the Security Agreement, (B) up to approximately $5,000 in cash
      equity and (C) up to approximately $125,000 in additional assets."

                  SUBPART 2.2.5. Subsidiaries. Clause (q) of Section 5.02 of the
      Existing Credit Agreement is amended by deleting the reference to "Section
      5.02(f)(i), (vii) or (ix)" appearing in clause (i) thereof and inserting a
      reference to "Section 5.02(f)(i), (vii), (ix) or (xii)" in replacement
      therefor.

                                    PART III
                           CONDITIONS TO EFFECTIVENESS

            SUBPART 3.1. Effectiveness. This Amendment and the amendments
contained herein shall become effective on the date (the "Third Amendment
Effective Date") when each of the conditions set forth in this Part shall have
been fulfilled to the satisfaction of the Administrative Agent.

                  SUBPART 3.1.1. Execution of Counterparts. The Administrative
      Agent and the Arranger shall have received counterparts of this Amendment,
      duly executed and delivered on behalf of the Borrower, the Administrative
      Agent and the Required Lenders.

                  SUBPART 3.1.2. Guaranty and Security. (a) The New Sales
      Subsidiary shall have duly entered into a supplement to the Subsidiary
      Guaranty and a supplement to


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      the Security Agreement, in each case under documentation reasonably
      satisfactory in form and substance to the Administrative Agent, the
      Arranger and their counsel, pursuant to which the New Sales Subsidiary, in
      consideration of (among other things) the transfer of the Borrower's
      accounts receivables to it, shall have duly guaranteed the Obligations and
      shall have granted a valid security interest in all of its assets to the
      Administrative Agent for the benefit of the Lenders and authorized
      perfection of the same, and the documentation for the transfer of such
      accounts receivable and for the purchase by the New Sales Subsidiary of
      inventory from the Borrower shall be reasonably satisfactory in form and
      substance to the Administrative Agent, the Arranger and their counsel.

            (b)   The Borrower shall have entered into a supplement to the
      Security Agreement, under documentation reasonably satisfactory in form
      and substance to the Administrative Agent, the Arranger and their counsel,
      to duly pledge all shares of stock and other Equity Interests in the New
      Sales Subsidiary, and shall have delivered to the Collateral Agent
      certificates representing all shares of stock and other Equity Interests
      in the New Sales Subsidiary accompanied by undated stock powers executed
      in blank.

                  SUBPART 3.1.3. Legal Opinion. The Administrative Agent and the
      Arranger shall have received, in form and substance reasonably
      satisfactory to the Administrative Agent, the Arranger and their counsel
      and in sufficient copies for each Lender, a favorable legal opinion of
      Barrett & McNagny, counsel for the Borrower and the New Sales Subsidiary,
      to the effect that this Amendment and the supplements to the Subsidiary
      Guaranty and the Security Agreement referred to in Section 3.1.2 above
      have been duly authorized, executed and delivered by the Borrower and the
      New Sales Subsidiary, as the case may be, will not violate organizational
      documents, material agreements or laws, and are legal, valid and binding,
      and that such security agreement supplements create valid and perfected
      liens on and security interests in the Collateral covered thereby,
      securing the payment of the Secured Obligations.

                  SUBPART 3.1.4. Expenses. The Borrower shall have paid all
      expenses (including the fees and expenses of Shearman & Sterling) incurred
      in connection with the preparation, negotiation and execution of this
      Amendment and other matters relating to the Credit Agreement from and
      after the last invoice to the extent invoiced.

                  SUBPART 3.1.5. Legal Details, etc. All documents executed or
      submitted pursuant hereto shall be satisfactory in form and substance to
      the Administrative Agent and the Arranger and Shearman & Sterling as
      counsel. The Administrative Agent, the Arranger and counsel shall have
      received all information and such counterpart originals or such certified
      or other copies or such materials as the Administrative Agent, the
      Arranger or counsel may reasonably request, and all legal matters incident
      to the transactions contemplated by this Amendment shall be satisfactory
      to the Administrative Agent, the Arranger and counsel.

                                    PART IV
                  MISCELLANEOUS; REPRESENTATIONS AND COVENANTS


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            SUBPART 4.1. Continuing Effectiveness, etc. As amended hereby, the
Credit Agreement shall remain in full force and effect and is hereby ratified
and confirmed in all respects. After the Third Amendment Effective Date, all
references in the Credit Agreement and each other Loan Document to the
"Agreement" or "Credit Agreement", as applicable, shall refer to the Existing
Credit Agreement, after giving effect to this Amendment, and this Amendment and
the supplements referred to in Subpart 3.1.3 shall be Loan Documents for all
purposes. The Borrower hereby confirms its obligations under Section 8.04 of the
Credit Agreement to pay all fees and expenses of the Administrative Agent and
the Arranger (including reasonable fees and out-of-pocket expenses of Shearman &
Sterling) in connection with this Amendment and other ongoing administration of
the Credit Agreement as provided in Section 8.04 of the Credit Agreement since
the last invoice it received.

            SUBPART 4.2. Counterparts. This Amendment may be executed in any
number of counterparts and by the different parties on separate counterparts,
and each such counterpart shall be deemed to be an original but all such
counterparts shall together constitute one and the same Amendment.

            SUBPART 4.3. Governing Law. THIS AMENDMENT SHALL BE A CONTRACT MADE
UNDER AND GOVERNED BY THE INTERNAL LAWS OF THE STATE OF NEW YORK.

            SUBPART 4.4. Successors and Assigns. This Amendment shall be binding
upon the Borrower, the Lenders and the Agents and their respective successors
and assigns, and shall inure to their successors and assigns.

            SUBPART 4.5. Representations and Warranties. In order to induce the
Lenders to execute and deliver this Amendment, the Borrower represents and
warrants to the Agents, the Lenders and the Issuing Bank that, after giving
effect to the terms of this Amendment, the following statements are true and
correct: (a) the representations and warranties set forth in Article IV of the
Existing Credit Agreement and in the other Loan Documents are true and correct
on the Third Amendment Effective Date as if made on the First Amendment
Effective Date and after giving effect to the Third Amendment (unless stated to
relate solely to an earlier date, in which case such representations and
warranties were true and correct in all material respects as of such earlier
date) and (b) no Default has occurred and is continuing.

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

                                          STEEL DYNAMICS, INC.


                                          By:  /s/ THERESA WAGLER
                                             ----------------------------------
                                              Title:  ASSISTANT SECRETARY



                                          JPMORGAN CHASE BANK,
                                            as Administrative Agent and
                                                Collateral Agent and as a Lender

                                          By:  /s/ LUCY K. GALBRAITH
                                             ----------------------------------
                                              Title:  VICE PRESIDENT



                                         MORGAN STANLEY SENIOR FUNDING, INC.,
                                            as Arranger and Syndication Agent
                                                and as a Lender


                                          By:  /s/ JAMES H. RAMAGE
                                              ----------------------------------
                                              Title:  MANAGING DIRECTOR



                                       GENERAL ELECTRIC CAPITAL CORPORATION,
                                            as Documentation Agent and as a
                                            Lender


                                          By:  /s/ ILLEGIBLE
                                              ----------------------------------
                                              Title:  DULY AUTHORIZED SIGNATORY