Exhibit 99.1
(JAMES HARDIE LOGO)
     
28 July 2006
    
 
    
 
  James Hardie Industries N.V.
 
  ARBN 097 829 895
 
  Incorporated in The Netherlands
 
  The liability of members is limited
 
    
 
  Level 3, 22 Pitt Street
The Manager
Company Announcements Office
Australian Stock Exchange Limited
20 Bridge Street
SYDNEY NSW 2000
  Sydney NSW 2000 Australia

Telephone (02) 8274 5305
Fax (02) 8274 5218

GPO Box 3935
 
  Sydney NSW 2001 Australia
Dear Sir/Madam
James Hardie will conduct a management briefing on its 1st Quarter FY07 Results on Thursday, 17 August 2006.
No physical briefing will be held for this quarter’s results. Separate teleconferences and audio webcasts will be held for both the media and analysts/investors briefings, per details below:
Media briefing:
     
Time:
  2.00pm
Domestic:
  02 8113 1400
International:
  61 2 8113 1400
Confirmation code for teleconference: 6159566
URL: http://www.ir.jameshardie.com.au/default.jsp?xcid=864
Analyst and Investor briefing:
     
Time:
  3.00pm
Domestic:
  02 8113 1400
International:
  61 2 8113 1400
Confirmation code for teleconference: 3963838
URL: http://www.ir.jameshardie.com.au/default.jsp?xcid=863
Yours faithfully
/s/ Steve Ashe
Steve Ashe
Vice-President – Investor Relations