James Hardie Industries (JHX) 6-K Appendix 3B New issue announcement

Exhibit 99.6

Appendix 3Y

Change of Director’s Interest Notice

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 30/9/2001.

Name of entity James Hardie Industries N.V.

ARBN 097 829 895 Incorporated in The Netherlands. The liability of members is limited.

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Mr Robert Ernest COX
Date of last notice	2 June 2009

Part 1 — Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Not applicable
Nature of indirect interest	Not applicable
(including registered holder)
Note: Provide details of the circumstances giving rise to the relevant interest.
Date of change	Not applicable
No. of securities held prior to change	Not applicable
Class	Not applicable
Number acquired	Nil
Number disposed	Nil
Value/Consideration	Not applicable
Note: If consideration is non-cash, provide details and estimated valuation
No. of securities held after change	Nil

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Nature of change	Not applicable
Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back

Part 2 — Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	Not applicable
Nature of interest	Restricted Stock Units (RSUs) are contractual entitlements to be issued ordinary shares/CUFS upon satisfaction of certain conditions.
Name of registered holder	Robert E Cox
(if issued securities)
Date of change	15 September 2009 (US time)
No. and class of securities to which interest related prior to change	155,196 Relative TSR RSUs
Note: Details are only required for a contract in relation to which the interest has changed
Interest acquired	65,250 Relative TSR Restricted Stock Units. These Restricted Stock Units are subject to a single TSR based hurdle measured over a performance period of 3 to 5 years from the grant date. They are granted pursuant to the 2006 JHINV Long Term Incentive Plan, as approved by shareholders at the 2009 Annual General Meeting.
Interest disposed	Not applicable
Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation	No cash consideration was paid for the Restricted Stock Units.
Interest after change	Current interests in contracts are:
	•	220,446 Relative TSR RSUs; and
	•	135,402 Executive Incentive Program RSUs.

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