Exhibit 99.1

22 April 2004

     
Manager Companies Sydney
Australian Stock Exchange
Exchange Centre
Level 6, 20 Bridge Street
Sydney NSW 2000
  James Hardie Industries N.V. ARBN 097 829 895 Incorporated in The Netherlands The liability of members is limited
 
   4th Floor, Atrium, Unit 04-07
Strawinskylaan 3077
1077 ZX Amsterdam,
The Netherlands
 
    
 
   Telephone: 31-20-301 2980
Fax: 31-20-404 2544

Dear Sir

ASX Listing Rule 3.16.1 Company Secretary

Mr Norm Gritsch has ceased to be a Company Secretary effective from 19 April 2004.

Yours faithfully

/s/ W. (Pim) Vlot

Company Secretary

W. (Pim) Vlot