Exhibit 4.12


                               PLEDGE OF ACCOUNTS

THIS AGREEMENT is made on 12 March 1998

BETWEEN:

(1)   NAKORNTHAI STRIP MILL PUBLIC COMPANY LIMITED, a public limited company
      duly organized and validly existing under the laws of the Kingdom of
      Thailand having its registered office at No. 9, UM Tower, 16th Floor,
      Kwaeng Suanluang, Khet Suanluang, Bangkok, Thailand (the "Pledgor");

(2)   The financial institutions whose names are listed in Exhibit I (the "Thai
      Lenders") represented by THE INDUSTRIAL FINANCE CORPORATION OF THAILAND, a
      corporation duly organized and validly existing under the laws of the
      Kingdom of Thailand having its registered office at No. 1770 New Petchburi
      Road, Bangkok 10320, as Facility Agent for the Thai Lenders (the "Thai
      Facility Agent");

(3)   THE CHASE MANHATTAN BANK, a company duly organized and validly existing
      under the laws of the State of New York, having its registered office at
      450 West 33rd Street, New York, New York, U.S.A., having its branch office
      in Bangkok, Thailand, located at 20 North Sathorn Road, Silom, Bangrak,
      Bangkok 10500, acting as the Trustees and the Debenture Trustee (as
      defined below).

AND

(4) THE CHASE MANHATTAN BANK as collateral agent (the "Pledgee").

WHEREAS:

A.    The Pledgor and the Thai Lenders entered into a credit facility agreement
      dated 27 September 1995, (the "CFA") whereunder credit facilities of Baht
      3,300,000,000 and US$308,000,000 have been granted;

B.    The Pledgor intends to procure financing from abroad by having NSM Steel
      Company, Ltd. ("NSM Cayman"), a company incorporated under the laws of the
      Cayman Islands and in which the Pledgor holds 100 percent of its shares,
      and NSM Steel (Delaware) Inc., a company incorporated under the laws of
      the State of Delaware, the United States, a wholly owned subsidiary of NSM
      Cayman (hereinafter collectively referred to as the "Note Issuers"),
      acting as agent of NSM Cayman pursuant to an agency agreement, issue
      US$452,500,000 of indebtedness comprised of (a) US$249,000,000 (aggregate
      principal amount at maturity) of 12% Senior Mortgage Notes Due 2006 (the
      "Senior Notes") which will be issued pursuant to an indenture dated as of
      1 March 1998 (the "Senior Note Indenture", among the Note Issuers, the
      Pledgor and The Chase Manhattan Bank ("Chase"), as trustee (the "Senior
      Notes Trustee"), (b) the US$203,500,000 (aggregate 


      principal amount at maturity) 12 1/4 Senior Subordinated Mortgage Notes
      Due 2008 (the "Senior Subordinated Notes" and together with the Senior
      Notes, the "Notes"), which will be issued pursuant to an indenture dated
      as of 1 March 1998 (the "Senior Subordinated Note Indenture", and together
      with the Senior Note Indenture, the "Indentures") among the Note Issuers
      and Chase, as trustee (the "Senior Subordinated Notes Trustee" and
      together with the Senior Notes Trustee, the "Trustees"), with warrants to
      purchase 74,476,809 (Seventy Four Million Four Hundred Seventy Six
      Thousand Eight Hundred and Nine) ordinary shares of the Pledgor, and (c) a
      private placement consisting of US$53,133,016 (aggregate principal amount
      at maturity of) 12 3/4% Subordinated Second Mortgage Debentures Due 2009
      (the "Debentures") which will be issued pursuant to an indenture dated as
      of 1 March 1998 (the "Debenture Indenture"), among the Note Issuers, the
      Pledgor and Chase, as trustee (the "Debenture Trustee") and 64,417,180
      ordinary shares of the Pledgor;

C.    The Pledgor has entered into an amendment to the CFA (the "CFA Amendment")
      with the Thai Lenders dated 12 March 1998 for the amendment of certain
      terms and provisions to facilitate the Pledgor's additional financing (the
      CFA and the CFA Amendment, collectively, the "Bank Credit Facility"),
      including but not limited to, an agreement the Pledgor entered into with
      the Thai Lenders, the Trustees and the Debenture Trustee dated 12 March
      1998 to set forth arrangements for the Thai Lenders, the holders of the
      Notes and the holders of the Debentures to share certain collateral (the
      "Security Sharing Agreement"); and

D.    Pursuant to the terms of the Security Sharing Agreement, the Pledgor, the
      Thai Lenders, the Thai Facility Agent, the Trustees, the Debenture Trustee
      and the Pledgee agree to enter into this Agreement as security for the
      Obligations (as defined hereunder).

IT IS AGREED as follows:

1.    DEFINITIONS

1.1   Except as otherwise provided herein, words and expressions in this
      Agreement shall have the same respective meanings as described in the Bank
      Credit Facility, the Indentures, the Debenture Indenture and the Security
      Sharing Agreement:

      "Accounts" means those accounts set forth in Exhibit 4 and all rights
      relating thereto, together with any substitute account or accounts opened
      from time to time;

      "Account Bank" means each of the commercial banks as financial
      institutions set out in Exhibit 4, or such other bank at which the
      Accounts or any of them are maintained and any assignor or successor
      thereof,

      "Collateral" means (i) the Accounts, (ii) all the Evidence, (iii) all the
      Deposits, and (iv) all other rights, entitlements, benefits and proceeds
      in, to and of the Accounts that may now or hereafter be, or required to
      be, pledged in favor of the Pledgee pursuant to this Agreement;


                                      -2-


      "Deposits" means, in respect of each Account, all monies now or at anytime
      hereafter standing to the credit thereof and all entitlement to interest
      (without prejudice to the provisions of Section 761 of the Civil and
      Commercial Code) and all other rights and benefits accruing to or arising
      from such monies and "Deposit" shall be construed accordingly;

      "Enforcement Notice" means a notice of an Event of Default under the Bank
      Credit Facility, the Indentures or, as the case may be, the Debenture
      Indentures in the form attached as Exhibit 3;

      "Evidence" means the passbook or other documents of title in relation to
      any Deposit or evidencing rights to any Deposit;

      "Pledge" means, in respect of each Account, the pledge of that Account
      created by or pursuant to this Agreement; and

      "Obligations" means all present and future obligations and liabilities of
      the Pledgor under the Bank Credit Facility Agreement, the Notes, the
      Indentures, the Debentures, the Debenture Indenture, and the Security
      Sharing Agreement.

1.2   Any reference in this Agreement to:

      (i)   any agreement or document shall be read and construed as a reference
            to such agreement or document as the same may have been, or may from
            time to time be, amended, varied, novated or supplemented; and

      (ii)  any party shall be construed so as to include its respective
            successors, permitted assigns and transferees in accordance with its
            respective interests;

1.3   Words denominating the singular include the plural and vice versa.

1.4   Section headings are for reference only.

2.    PLEDGE

2.1   To secure the due and punctual payment and performance by the Pledgor of
      the Obligations, the Pledgor hereby:

      (a)   pledges the Accounts to the Pledgee as a first security interest for
            the benefit of the Thai Lenders and the holders of the Notes and as
            a second security interest for the benefit of the holders of the
            Debentures, on the terms and conditions set out in this Agreement
            and the Pledgee agrees to accept the pledge of such Accounts on the
            terms and conditions set out in this Agreement.

      (b)   undertakes at each time when any Evidence is issued to immediately:

            (i)   deliver such Evidence to the Pledgee;


                                      -3-


            (ii)  endorse on such Evidence the following: "This Account is
                  pledged pursuant to the Pledge of Accounts dated 12 March 1998
                  between the Pledgor, the Thai Facility Agent, the Trustees,
                  the Debenture Trustee and the Pledgee named therein and the
                  terms and conditions thereof shall apply to this Account"; and
                  execute such endorsement;

            (iii) give notice to the Account Banks in the form set out in Part A
                  of Exhibit 2 hereto and procure that as soon as practicable
                  the Account Banks acknowledges such notice in the form set out
                  in Part B of Exhibit 2, or in such other form as may be
                  reasonably acceptable to the Pledgee; and

            (iv)  complete all other actions and deliver any other document
                  which the Pledgee may reasonably require to perfect the
                  pledging by the Pledgor under this Agreement and each Pledge;
                  and

      (c)   in the event that the Pledgor opens any Account the details of which
            are not listed in Exhibit 4 , the Pledgor agrees, if requested by
            the Thai Lenders, the Trustees or the Debenture Trustee to promptly
            execute and deliver to the Pledgee an agreement substantially in the
            form of this Agreement pledging such Account to the Pledgee for the
            benefit of the Thai Lenders, the holders of the Notes and the
            holders of the Debentures (as a second priority lien).

3.    ENFORCEMENT OF PLEDGE

3.1   The enforcement of the Pledge shall be in accordance with the Security
      Sharing Agreement.

3.2   In accordance with the Security Sharing Agreement, following the receipt
      of a Notice of Actionable Default (as defined therein) and in compliance
      with Section 4 of the Security Sharing Agreement, the serving on the
      Pledgor of an Enforcement Notice shall cause each Pledge constituted by or
      pursuant to this Agreement to become immediately enforceable by any means
      in accordance with applicable laws.

3.3   In the enforcement of the Pledge created pursuant to the provisions of
      this Agreement, the Pledgee may select any or all of the Collateral as it
      deems appropriate, subject only to limitations imposed by applicable law.

3.4   The proceeds derived from the enforcement of any Pledge shall be applied
      towards settlement of the Obligations in accordance with the first
      security interests of the Thai Lenders and holders of the Notes under the
      Bank Credit Facility, the Indentures and the Security Sharing Agreement
      and the second security interests of the holders of Debentures under the
      Debenture Indenture and the Security Sharing Agreement. In the event that
      such proceeds are insufficient to pay or set off all amounts to which the
      Thai Lenders, The Thai Facility Agent, the Trustees and the Debenture
      Trustee and the Pledgee are entitled, the Pledgor shall be liable for the
      deficiency.


                                      -4-


4.    CONTINUING SECURITY

4.1   This Agreement and each Pledge created by or pursuant hereto shall be in
      addition to, independent of, without prejudice to, and shall not be in
      substitution for or merge with any other rights, security, guarantee,
      indemnity or suretyship now held or which may hereafter be held by the
      Thai Lenders, the Trustees or, as the case may be, the Debenture Trustee
      (as a second priority lien) for the due payment and performance by the
      Pledgor of the Obligations.

4.2   This Agreement and each Pledge created by or pursuant hereto shall be a
      continuing security and shall remain in full force and effect
      notwithstanding the liquidation, bankruptcy or other incapacity of the
      Pledgor or any amalgamation or reconstruction of the Pledgor or any change
      in the constitution thereof or any settlement of account, intervening
      payment or the extinction of any or all indebtedness by whatever reason
      (other than by full performance and discharge of the Obligations) or other
      matter or thing whatsoever.

4.3   If after the date of this Agreement:

      (a)   any settlement or discharge of any or all of the Obligations of the
            Pledgor is nullified for any reason whatsoever, and/or

      (b)   an order or judgement is made against the Thai Lenders, the
            Trustees, the Debenture Trustee, the holders of the Notes or the
            holders of the Debentures under Section 237 of the Civil and
            Commercial Code of Thailand (or any modification or re-enactment
            thereof) or under any of Section 113, 114 and 115 of the Bankruptcy
            Act of Thailand (or any modification or re-enactment thereof)
            directing the Thai Lenders, the Trustees, the Debenture Trustee, the
            holders of the Notes or the holders of the Debentures to pay any sum
            received or held by it from the Pledgor or any other person to
            settle all or part of the debt of the Pledgor to an official
            receiver, a liquidator or a creditor of the Pledgor;

      then the returned moneys, losses, damages, costs and expenses of the Thai
      Lenders, the Trustees, the Debenture Trustee, the holders of the Notes or
      the holders of the Debentures arising as a result of such nullified
      settlement or discharge, and/or (as the case may be) the sum paid by it
      pursuant to such order or judgement shall be recoverable from the Pledgor
      on demand.

5.    FURTHER ASSURANCES

5.1   The Pledgor shall, at anytime at the reasonably request of the Pledgee and
      at the cost and expense of the Pledgor, promptly sign, seal, execute and
      deliver such deeds, instruments, notices and documents, (including further
      legal or other transfers or assignments) and do such acts and things as
      may reasonably be required by the Pledgee for the purpose of maintaining,
      perfecting, protecting, defending, enforcing or securing the obligations
      of the Pledgor under this Agreement and the encumbrances arising under or
      constituted by or 


                                      -5-


      pursuant to this Agreement (or purported to be created by or constituted
      by or pursuant to this Agreement) or in respect of each Account (whether
      in existence at the date hereof or acquired after the date hereof) or for
      facilitating the exercise or, as the case may be, realization thereof and
      the exercise of all other powers, authorities and discretion vested in the
      Pledgee.

5.2   The Pledgee shall, without prejudice to other rights, powers and
      privileges under this Agreement, be entitled (but shall be under no
      obligation), at any time and as often as it may reasonably consider to be
      necessary, to take any such action and/or demand additional documents and
      instruments from the other party (in which case the Pledgor undertakes to
      use its best endeavors to procure such documents or instruments from such
      person) for the purpose of protecting the rights constituted by this
      Agreement.

5.3   The Pledgor hereby agrees to indemnify the Pledgee on demand against any
      and all costs, losses, expenses or liabilities incurred by or imposed on
      the Thai Facility Agent, the Thai Lenders, the Trustees, the Debenture
      Trustee or the Pledgee in connection with actions taken concerning the
      perfection and/or protection of the rights and/or security interest
      referred to in this Clause 5.3.

6.    INVESTMENT DECISIONS

      Unless otherwise provided in the Indentures or the Debenture Indenture and
      as described more fully in the Pledge of Permitted Investments, the
      Pledgor is authorized to continue to control investment decisions with
      respect to the funds in the Accounts until a Notice of Actionable Default
      (as defined in the Security Sharing Agreement) has been issued by the
      Trustees under the Indentures, the Thai Facility Agent under the Bank
      Credit Facility, or, as the case may be, the Debenture Trustee under the
      Debenture Indenture (as a second priority lien). At such time, the Pledgee
      shall control investment decisions with respect to funds in Accounts and
      realize upon its security interest.

7.    FILINGS, RECORDS, INSPECTION

      Except as otherwise permitted hereunder, the Pledgor shall not file or
      suffer to be on file, or authorise or permit to be filed or to be on file,
      in any jurisdiction, any other encumbrance with respect to the Accounts in
      which the Pledgee is not named as the sole first secured party for the
      benefit of the Thai Lenders and the Trustees or as the sole second secured
      party for the benefit of the Debenture Trustee. The Pledgor shall permit
      representatives of the Pledgee upon reasonable notice, at any time during
      normal business hours to inspect and make abstracts from its books and
      records pertaining to the Accounts.

8.    REMEDIES AND WAIVERS

8.1   Any receipt, release or discharge of the pledge provided by, or of any
      liability arising under this Agreement may be given by the Pledgee alone
      and shall not release or discharge the Pledgor from any liability for the
      same or any other moneys which may exist


                                      -6-


      independently of this Agreement. Where such receipt, release or discharge
      relates only to part of the Accounts, such receipt, release or discharge
      shall not prejudice or affect the pledge hereby created in relation to the
      remainder of the Accounts.

8.2   The Pledgee may in its or their discretion grant time or other indulgence,
      or make any other arrangement variation or release, with the Pledgor or
      any other person (whether or not party hereto and whether or not jointly
      liable with the Pledgor) in respect of all the obligations or of any other
      security therefor or guarantee in respect thereof without prejudice either
      to the pledge constituted by or pursuant to this Agreement or to the
      liability of the Pledgor for the Obligations.

8.3   The rights, powers and remedies provided in this Agreement are cumulative
      and are not, nor are they to be construed as, exclusive of any rights,
      powers and remedies provided by law.

8.4   No failure on the part of the Pledgee to exercise, or delay on its or
      their part in exercising any of the rights, powers and rei-nedies provided
      for by this Agreement or by law shall operate as a waiver thereof, nor
      shall any single or partial waiver of any such rights, powers or remedies
      preclude any further or other exercise of such rights, power or remedies
      or the exercise of any other of such rights, powers or remedies.

9.    SUCCESSORS AND ASSIGNS

      This Agreement shall be binding on and inure to the benefit of the parties
      hereto and their respective successors, assignees and transferees provided
      that the Pledgor may not assign any of its rights or obligations under
      this Agreement.

10.   RELEASE AND DISCHARGE

      The Pledgee shall, at the request and cost of the Pledgor, at any time
      after the Pledgor's Obligations have been repaid in full, promptly release
      and discharge the Pledgor from its obligations under this Agreement and
      any Pledge and shall deliver any Accounts in its possession at such time
      to the possession of the Pledgor.

11.   SEVERABILITY

      If at any time any one or more of the provisions of this Agreement or any
      Pledge becomes invalid, illegal or unenforceable in any respect under any
      law, the validity, legality and enforceability of the remaining provisions
      of this Agreement and such Pledge shall not in any way be affected or
      impaired thereby.

12.   NOTICES

      Any notice or communication under or in connection with Section 12 of the
      Security Sharing Agreement and the provisions of such agreement shall
      apply hereto mutatis mutandis.


                                      -7-


13.   LAW

      This Agreement and each Pledge shall be governed by and construed in
      accordance with the laws of Thailand.

14.   AMENDMENTS

      The terms of this Agreement may be waived, altered or amended only by an
      instrument in writing duly executed by the Pledgor and the Pledgee in
      accordance with Section 17 of the Security Sharing Agreement.


IN WITNESS WHEREOF the parties hereto have caused this Agreement to be duly
executed.


NAKORNTHAI STRIP MILL PUBLIC COMPANY LIMITED
as Pledgor


By: /s/  Sawasdi Horrungruang
    -----------------------------------------
    Title:


THE INDUSTRIAL FINANCE CORPORATION OF THAILAND
as Facility Agent for the Thai Lenders


By: /s/ [ILLEGIBLE]
    -----------------------------------------
    Title:


THE CHASE MANHATTAN BANK
as Trustees and Debenture Trustee


By: /s/ [ILLEGIBLE]
    -----------------------------------------
    Title:


THE CHASE MANHATTAN BANK
as Pledgee


By: /s/ [ILLEGIBLE]
    -----------------------------------------
    Title:


                                      -8-


                                    EXHIBIT 1

                                The Thai Lenders

1.    The Industrial Finance Corporation of Thailand
2.    Thai Farmers Bank Public Company Limited
3.    Siam City Bank Public Company Limited
4.    The Government Bank
5.    First Bangkok City Bank Public Company Limited
6.    Nakornthon Bank Public Company Limited
7.    SCF Finance and Securities Public Company Limited
8.    Siam City Credit Finance and Securities Public Company Limited


                                      -9-


                                    EXHIBIT 2

                                     Part A

                                Notice of Pledge

      12 March 1998

To:   The Chase Manhattan Bank
      20 North Sathorn Road
      Bangkok 10500

Dear Sirs,

We refer to the passbooks (the "Instrument(s)") representing the accounts as
listed in the attachment hereto (the "Accounts").

We hereby give you notice that pursuant to the Pledge of Accounts Agreement
dated 12 March 1998, (the "Pledge of Accounts") between Nakornthai Strip Mill
Public Company Limited (the "Pledgor"), the Thai Lenders, the Trustees and the
Pledgee named therein, the Pledgor has pledged to the Pledgee the Instruments
and all rights of the Pledgor arising from the Instruments, including its right
to withdraw monies.

Terms and expressions defined in the Pledge of Accounts shall have the same
meaning when used herein.

Please acknowledge receipt of this notice by signing and retuming a copy to the
Collateral Agent and another copy to the Pledgor.


NAKORNTHAI STRIP MILL PUBLIC COMPANY LIMITED
as Pledgor


By: 
    ----------------------------------
    Name:
    Title:


Attachment:  Acknowledgment of notice of pledge


                                      -10-


                                     Part B

                      Acknowledgment of Pledge of Accounts


To:   THE CHASE MANHATTAN BANK
      as Collateral Agent

      NAKORNTHAI STRIP MILL PUBLIC COMPANY LIMITED
      No. 9, UM Tower, 16th Floor
      Kwaeng Suanluang, Khet Suanluang
      Bangkok

We hereby acknowledge receipt of a notice of pledge of which this is a copy.

Yours sincerely,

THE CHASE MANHATTAN BANK


By:
   ---------------------------
   Name:
   Title:


                                      -11-


                                    EXHIBIT 3

                           Form of Enforcement Notice


To:         NAKORNTHAI STRIP MILL PUBLIC COMPANY LIMITED
            No. 9, UM Tower, 16"' Floor
            Kwaeng Suanluang, Khet Suanluang
            Bangkok

[date]

Dear Sirs,

We refer to:

      (a)   the following accounts as listed in the attached (the "Accounts"):

      (b)   the Pledge of Accounts dated 12 March 1998 (the "Pledge of
            Accounts") between Nakornthai Strip Mill Public Company Limited (the
            "Pledgor"), the Thai Lenders, the Trustees, the Debenture Trustee
            and the Collateral Agent (as therein defined); and

      (c)   the notice of pledge dated [ ] given to the Account Banks by the
            Pledgor and confirmed by the Account Banks in respect of the Pledge
            of Accounts.

Words and expressions defined in the Pledge of Accounts (whether expressly
therein or by cross-reference to another document) and used herein shall, unless
the context otherwise requires, have the same meanings when used herein.

We hereby notify you that we have received a Notice of an Actionable Default and
that we have been directed to deliver this Enforcement Notice in accordance with
the provisions of Section 4 of the Sharing Agreement.

We hereby confirm that this Enforcement Notice is delivered pursuant to and for
the purposes of Clause 3.2 of the Pledge of Accounts and in accordance with the
terms thereof, each pledge constituted by or pursuant to the Pledge of Accounts
is immediately enforceable by any means in accordance with applicable law.


                                      -12-


This Enforcement Notice and the rights and obligations of the parties hereunder
shall be governed by and construed in accordance with the laws of Thailand.

Your faithfully,

THE CHASE MANHATTAN BANK
As Collateral Agent, for and on behalf of the Thai Lenders, the Trustees and the
Debenture Trustees [o]


By:
   ---------------------


                                      -13-


                                    EXHIBIT 4

                               Details of Accounts

The Chase Manhattan Bank - Bangkok Branch

1)    Type: corporate savings A/C - Baht, non-interest bearing
      A/C Name:  Nakornthai Strip Mill Public Co., Ltd. - Onshore Baht Revenue
                 Account 
      A/C No. 6580116868

2)    Type: corporate savings A/C - US$, non-interest bearing
      A/C Name:  Nakornthai Strip Mill Public Co., Ltd. - Onshore USD Revenue
                 Account
      A/C No. 6581115463

3)    Type: corporate savings A/C - Baht, non-interest bearing (with check
      book)
      A/C Name:  Nakornthai Strip Mill Public Co., Ltd. - Baht Operating Account
      A/C No. 6580116876

4)    Type: corporate savings A/C - US$, interest bearing
      A/C Name:  Strip Mill Public Co., Ltd. - USD Operating Account
      A/C No. 6581115471