DOTZ NANO LIMITED — Major Shareholding Notification 2012

Apr 30, 2012

Form 605

Corporations Law Section 671B

Notice of ceasing to be a substantial holder

To: Company Name/Scheme	NORTHERN IRON LIMITED
ACN/ARSN	125 264 575
1. Details of substantial holder (1)
Name	UBS AG and its related bodies corporate
ACN/ARSN (if applicable):
The holder ceased to be a substantial shareholder on		26 April 2012
The previous notice was given to the company on		10 April 2012
The previous notice was dated		4 April 2012

2. Changes in relevant interests

Particulars of each change in, or change in the nature of, a relevant interest (2) of the substantial holder or an associate (3) in voting securities of the company or scheme, since the substantial holder was last required to give a substantial holding notice to the company or scheme are as follows:

Date of change	Person whose relevant interest changed	Nature of Change (4)	Consideration aiven in relation to change (5)	Class (6) and Number of securities affected	Person's votes affected
Please see Appendix A.

3. Changes in association

The persons who have become associates (3) of, ceased to be associates of, or have changed the nature of their association (7) with, the substantial holder in relation to voting interests in the company or scheme are as follows:

Name and ACN/ARSN (if applicable)	Nature of association
N/A	------- N/A

4. Addresses

The addresses of persons named in this form are as follows:

Name	Address
. Details of all UBS offices can be found through the $\,$ following link: http://apps.ubs.com/locationfinder

SIGNATURE

	Capacity:	Authorised signatory
ਵ≫	Date:	30 April 2012
Trish Lee	Capacity:	Authorised signatory
	Date:	30 April 2012
	Print Name: So Young Kim

Kanadian Maria Barat I

Contact details for this notice: -------------------------

Tiffany Leung

Legal & Compliance

(T) +852 2971 8042

(F) +852 2971 7895 ------------_""

					NFE - Appendix A
Date of change	Person whose relevant interest changed BILLE STATE	Nature of Changes 14. X. III 13	Consideration given in relation to change	Number of securities	Class
$05-Apr-12$	UBS Securities Australia Ltd	Buy	190	201	Ordinary
105-Apr-12	UBS Securities Australia Ltd	Sel	2,850	(3,000)	Ordinary
$05-Apr-12$	UBS Securities Australia Ltd	Sell	9,500	(10,000)	Ordinary
$12-Apr-12$	UBS Securities Australia Ltd	Sell	47,125	(50,000)	Ordinary
16-Apr-12	UBS Securities Australia Ltd	Buy	10,774	11.223	Ordinary
17-Apr-12	UBS Global Asset Management Ltd	Buy	13,739	13,243	Ordinary
18-Apr-12	UBS Securities Australia Ltd	Buy	4,330	4,000	Ordinary
19-Apr-12	UBS Securities Australia Ltd	Buy	,333	.294	Ordinarv
19-Apr-12	UBS Securities Australia Ltd	Sell	6,132	(5,896)	Ordinary
19-Apr-12	UBS Securities Australia Ltd	Sell	.346	(1,294)	Ordinary
$20 - Apr - 12$	UBS Securities Australia Ltd	Buy	31,192	30,123	Ordinary
20-Apr-12	UBS Securities Australia Ltd	Seli	103,810	(100,000)	Ordinary
$23 - Apr - 12$	UBS Securities Australia Ltd	Seil	5,150	(5,000)	Ordinary
$24$ -Apr-12	UBS Securities Australia Ltd	Sell	93,001	(91, 916)	Ordinary
26-Apr-12	UBS Securities Australia Ltd	Sell	107,854	(105.822)	Ordinary
26-Apr-12	UBS Securities Australia Ltd	Sell	159,754	(160, 010)	Ordinary
$26$ -Apr-12	UBS AG, London Branch	Sell	65	(65)	Ordinary

$\mathcal{L}_{\mathcal{A}}$