Exhibit 99.4
Appendix 3B
New issue announcement


Rule 2.7, 3.10.3, 3.10.4, 3.10.5

Appendix 3B

New issue announcement,
application for quotation of additional securities
and agreement

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 1/7/96. Origin: Appendix 5. Amended 1/7/98, 1/9/99, 1/7/2000, 30/9/2001, 11/3/2002, 1/1/2003.

Name of entity

James Hardie Industries N.V.

ARBN

097 829 895

We (the entity) give ASX the following information.

Part 1 — All issues

You must complete the relevant sections (attach sheets if there is not enough space).

             
  1     +Class of +securities issued or to be issued   Shares/CUFS
 
  2     Number of +securities issued or to be issued (if known) or maximum number which may be issued   4,822 shares/CUFS
 
  3     Principal terms of the +securities (eg, if options, exercise price and expiry date; if partly paid +securities, the amount outstanding and due dates for payment; if +convertible securities, the conversion price and dates for conversion)   4,822 Shares/CUFS issues on exercise of options.

 


+   See chapter 19 for defined terms.

     
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New issue announcement


         
4   Do the +securities rank equally in all respects from the date of allotment with an existing +class of quoted +securities?

If the additional securities do not rank equally, please state:

• the date from which they do

• the extent to which they participate for the next dividend, (in the case of a trust, distribution) or interest payment

• the extent to which they do not rank equally, other than in relation to the next dividend, distribution or interest payment

  Yes, rank equally with issued shares/CUFS
5   Issue price or consideration   Allotment of shares/CUFS on exercise of
1,250 options at A$6.449 each and
3,572 options at A$5.0586 each.
6   Purpose of the issue (If issued as consideration for the acquisition of assets, clearly identify those assets)   Exercise of options.
7   Dates of entering +securities into uncertificated holdings or despatch of certificates   10 March 2004
             
        Number   +Class
       
 
8   Number and +class of all +securities quoted on ASX (including the securities in clause 2 if applicable)   458,558,436   Shares/CUFS
             
        Number   +Class
       
 
9   Number and +class of all +securities not quoted on ASX (including the securities in clause 2 if applicable)   18,006,029   Options

          


+ See chapter 19 for defined terms.

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Appendix 3B
New issue announcement


10   Dividend policy (in the case of a trust, distribution policy) on the increased capital (interests)

Rank for dividends equally with issued shares/CUFS.

 

Part 2 — Bonus issue or pro rata issue

         
11   Is security holder approval required?   Not applicable
12   Is the issue renounceable or non-renounceable?   Not applicable
13   Ratio in which the +securities will be offered   Not applicable
14   +Class of +securities to which the offer relates   Not applicable
15   +Record date to determine entitlements   Not applicable
16   Will holdings on different registers (or subregisters) be aggregated for calculating entitlements?   Not applicable
17   Policy for deciding entitlements in relation to fractions   Not applicable
18   Names of countries in which the entity has +security holders who will not be sent new issue documents   Not applicable
    Note: Security holders must be told how their entitlements are to be dealt with.    
    Cross reference: rule 7.7.    
19   Closing date for receipt of acceptances or renunciations   Not applicable
20   Names of any underwriters   Not applicable
21   Amount of any underwriting fee or commission   Not applicable
22   Names of any brokers to the issue   Not applicable



     
+ See chapter 19 for defined terms.    
     
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New issue announcement

         
23   Fee or commission payable to the broker to the issue   Not applicable
24   Amount of any handling fee payable to brokers who lodge acceptances or renunciations on behalf of +security holders   Not applicable
25   If the issue is contingent on +security holders’ approval, the date of the meeting   Not applicable
26   Date entitlement and acceptance form and prospectus or Product Disclosure Statement will be sent to persons entitled   Not applicable
27   If the entity has issued options, and the terms entitle option holders to participate on exercise, the date on which notices will be sent to option holders   Not applicable
28   Date rights trading will begin (if applicable)   Not applicable
29   Date rights trading will end (if applicable)   Not applicable
30   How do +security holders sell their entitlements in full through a broker?   Not applicable
31   How do +security holders sell part of their entitlements through a broker and accept for the balance?   Not applicable
32   How do +security holders dispose of their entitlements (except by sale through a broker)?   Not applicable
33   +Despatch date   Not applicable

          


     
+ See chapter 19 for defined terms.    
     
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Appendix 3B
New issue announcement



Part 3 — Quotation of securities

You need only complete this section if you are applying for quotation of securities

         
34   Type of securities
(tick one)
(a)   ü   Securities described in Part 1
(b)       All other securities
        Example: restricted securities at the end of the escrowed period, partly paid securities that become fully paid, employee incentive share securities when restriction ends, securities issued on expiry or conversion of convertible securities

Entities that have ticked box 34(a)

Additional securities forming a new class of securities Not applicable

Tick to indicate you are providing the information or documents

     
35   If the +securities are +equity securities, the names of the 20 largest holders of the additional +securities, and the number and percentage of additional +securities held by those holders
36   If the +securities are +equity securities, a distribution schedule of the additional +securities setting out the number of holders in the categories
1 — 1,000
1,001 — 5,000
5,001 — 10,000
10,001 — 100,000
100,001 and over
37   A copy of any trust deed for the additional +securities


+ See chapter 19 for defined terms.

         
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Entities that have ticked box 34(b)   Not applicable

38   Number of securities for which +quotation is sought
39   Class of +securities for which quotation is sought
40   Do the +securities rank equally in all respects from the date of allotment with an existing +class of quoted +securities?

If the additional securities do not rank equally, please state:

  •  the date from which they do
  •  the extent to which they participate for the next dividend, (in the case of a trust, distribution) or interest payment
  •  the extent to which they do not rank equally, other than in relation to the next dividend, distribution or interest payment
41   Reason for request for quotation now

Example: In the case of restricted securities, end of restriction period

(if issued upon conversion of another security, clearly identify that other security)

 

 

             
        Number   +Class

42   Number and +class of all +securities quoted on ASX
(including the securities in clause 38)
       

 


     
+ See chapter 19 for defined terms.    
     
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New issue announcement  


Quotation agreement

1   +Quotation of our additional +securities is in ASX’s absolute discretion. ASX may quote the +securities on any conditions it decides.
 
2   We warrant the following to ASX.

    The issue of the +securities to be quoted complies with the law and is not for an illegal purpose.
 
    There is no reason why those +securities should not be granted +quotation.
 
    An offer of the +securities for sale within 12 months after their issue will not require disclosure under section 707(3) or section 1012C(6) of the Corporations Act.
 
      Note: An entity may need to obtain appropriate warranties from subscribers for the securities in order to be able to give this warranty
 
    Section 724 or section 1016E of the Corporations Act does not apply to any applications received by us in relation to any +securities to be quoted and that no-one has any right to return any +securities to be quoted under sections 737, 738 or 1016F of the Corporations Act at the time that we request that the +securities be quoted.
 
    We warrant that if confirmation is required under section 1017F of the Corporations Act in relation to the +securities to be quoted, it has been provided at the time that we request that the +securities be quoted.
 
    If we are a trust, we warrant that no person has the right to return the +securities to be quoted under section 1019B of the Corporations Act at the time that we request that the +securities be quoted.


     
+ See chapter 19 for defined terms.    
     
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New issue announcement.


3   We will indemnify ASX to the fullest extent permitted by law in respect of any claim, action or expense arising from or connected with any breach of the warranties in this agreement.
 
4   We give ASX the information and documents required by this form. If any information or document not available now, will give it to ASX before +quotation of the +securities begins. We acknowledge that ASX is relying on the information and documents. We warrant that they are (will be) true and complete.

         
Sign here:   /s/ W. Pim Vlot    
    Manager Secretarial Services   Date: 10 March 2004
         
Print name:   W. (Pim) Vlot    

== == == == ==


     
+ See chapter 19 for defined terms.    
     
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