Exhibit 99.1

     
19 July 2004
   James Hardie Industries N.V.
 ARBN 097 829 895
Incorporated in The Netherlands
The liability of members is limited

   
The Manager
Company Announcements Office
Australian Stock Exchange Limited
20 Bridge Street
SYDNEY NSW 2000
  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/Madam

James Hardie will conduct a management briefing of its 1st Quarter FY05 Results on Tuesday, 10 August 2004.

The management briefing will commence at 11.00am via a teleconference and audio webcast which will be available on the following:

Domestic: 02 9423 1645
International: +61 2 9423 1645
URL: http://events.genesysrichmedia.com/jameshardie/2004/08/10/

Yours faithfully

/s/ Steve Ashe

STEVE ASHE
VICE-PRESIDENT, INVESTOR RELATIONS