Exhibit 99.1
     
 
(JAMES HARDIE LOGO)
 
   
 
  James Hardie Industries N.V.
 
  ARBN 097 829 895
 
  Incorporated in The Netherlands with a
 
  corporate seat in Amsterdam
 
  The liability of members is limited
 
  Dutch Registration Number: 34106455
Friday, 29 January 2010
   
 
  Level 3, 22 Pitt Street
 
  Sydney NSW 2000 Australia
 
   
 
  Telephone (02) 8274 5239
 
  Fax (02) 8274 5218
The Manager
   
Company Announcements Office
   
ASX
  GPO Box 3935
20 Bridge Street
  Sydney NSW 2001 Australia
SYDNEY NSW 2000
   
 
   
Dear Sir/Madam
James Hardie will conduct a management briefing on its 3rd Quarter FY10 results on Thursday, 11 February 2010.
No physical briefing will be held for this quarter’s results. A teleconference and webcast will be available for analysts, investors and media, as below:
Time:     9.30am Australian Eastern Daylight Time (AEDT)
 
Local:     02 8524 6650
 
International:     +61 2 8524 6650
Confirmation ID for the teleconference: 53734668
URL:     http://www.ir.jameshardie.com.au/jh/results_fy_2010.jsp
         
Yours faithfully
 
   
-s- sean o’sullivan      
Sean O’Sullivan
Vice President — Investor and Media Relations