DOTZ NANO LIMITED — Major Shareholding Notification 2012

Apr 10, 2012

Form 603

Corporations Law Section 671B

Notice of initial 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 became a substantial holder on:	4 April 2012

Details of voting power $2.$

The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate (2) had a relevant interest (3) in on the date the substantial holder became a substantial holder are as follows:

Class of securities (4)	Number of securities	Persons' votes (5)	Voting power (6)
Ordinarv	18.863.714	18.863.714	5.10%

Details of relevant interests $3.$

The nature of the relevant interest the substantial holder or an associate had in the following voting securities on the date the substantial holder became a substantial holder are as follows:

Holder of relevant interest Nature of relevant interest (7)		Class and number of securities
UBS Global Asset Management (Australia) Ltd	Fund Manager with power to exercise control over voting shares	14,601,912	Ordinary
UBS Securities Australia Ltd	Beneficial Owner	761.802	Ordinary
UBS AG, Australia Branch	Prime Broker with power to control the exercise of the power to dispose of shares pursuant to a Prime Broking Agreement (see Appendix A)	3.500.000	Ordinary

4. Details of present registered holders

Holder of relevant	Registered holder of	Person entitled to be	Class and number of
interest	securities	registered as holder (8)	securities
UBS Global Asset	Various Custodians	UBS Global Asset	14.601.912
Management (Australia) Ltd		Management (Australia) Ltd	Ordinary
UBS Securities Australia Ltd	Brispot Nominees Pty Ltd	UBS Securities Australia Ltd	761.802 Ordinary
UBS AG, Australia Branch	UBS Nominees Pty Ltd	UBS AG, Australia Branch	3,500,000 Ordinary

The persons registered as holders of the securities referred to in paragraph 3 above are as follows:

5. Consideration

The consideration paid for each relevant interest referred to in paragraph 3 above, and acquired in the four months prior to the day that the substantial holder became a substantial holder is as follows:

Holder of relevant interest	Date of acquisition	Consideration (9)		Class and number of securities
		Cash	Non-cash
Please see Appendix B.

6. Associates

The reasons the persons named in paragraph 3 above are associates of the substantial holder are as follows:

Name and ACN/ ARSN (if applicable)	Nature of association
UBS Global Asset Management (Australia) Ltd	Related body corporate
UBS Securities Australia Ltd	Related body corporate
Brispot Nominees Pty Ltd	Related body corporate
UBS Nominees Pty Ltd	Related body corporate

7. Addresses

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

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

SIGNATURE

Print Name:	Tiffany Leung	Capacity:	Authorised signatory
Sign Here:	мИ	Date:	10 April 2012
Print Name:	Trish Lee	Capacity:	Authorised signatory
Sign Here:		Date:	10 April 2012

×.

Contact details for this notice:

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.

$\hat{\mathcal{A}}$

Tiffany Leung

Legal & Compliance

(T) +852 2971 8042

(F) +852 2971 7895 ____________

$\overline{\phantom{a}}$

Holder of relevant Interest	UBS AG, Australia Branch
Type of agreement	Prime Brokerage Agreement
Parties to agreement	(i) UBS AG, Australia Branch ("UBS AG") (ii) Client (Please refer to Appendix $A-1.$
Transfer date	Please refer to Appendix A-1.
Holder of voting rights	UBS AG
Are there any restrictions on voting rights?	Please refer to the details below.
If yes, detail	Since all right and title in the securities passes to the transferee (i.e. UBS AG), the transferee has the right to vote. However, in certain circumstances, the transferee may seek to arrange for instructions to be exercised in accordance with the instructions of the transferor (i.e. Client).
Scheduled return date (if any)	None, subject to the terms of the relevant Ioan.
Does the borrower have the right to return early?	Yes.
If yes, detail	The borrower (i.e. UBS AG) has the right to return at its discretion.
Does the lender have the right to recall early?	Yes.
If yes, detail	The lender (i.e. Client) can recall at its request subject to compliance with margin requirements and the terms of the relevant loan.
Will the securities be returned on settlement?	Yes.
If yes, detail any exceptions	None.

Prime Brokerage Agreement - UBS AG, Australia Branch

and the control of the con- instruction AS ST 3350FP Parties to agreement s Pijai p . .	mar. $\sim$ $\cdots$ $\cdots$	93. NGC 10,000 . $\sim$ $\sim$ $\sim$	STARK STOP Transfer date (4) 望 しゃくし $\alpha$ , $\alpha$ , $\alpha$
TIGA Trading Pty Limited			(i) 5 December 2011
			(ii) 11 January 2012
			(iii) 4 April 2012

					NFE - Appendix B
Date of change	Person whose relevant interest changed -44	Nature of Change	Consideration given in relation to change	Number of securities	Class
$05 - Dec - 11$	UBS AG, Australia Branch	Stock received	N/A	2,200,000	Ordinary
05-Dec-11	UBS AG, London Branch	Buy	997	1,389	Ordinary
06-Dec-11 $12 - Dec - 11$	UBS AG, London Branch UBS AG, London Branch	Buy Buy	673 49	957	Ordinary
15-Dec-11	UBS Securities Australia Ltd	Buy	18,777	70 28,450	Ordinary Ordinary
15-Dec-11	UBS AG, London Branch	Sell	439	(663)	Ordinary
$16 - Dec - 11$	UBS AG, London Branch	$\overline{\mathsf{Sel}}$	$\overline{83}$	(126)	Ordinary
19-Dec-11 20-Dec-11	UBS AG, London Branch	Ŝe∥	869	(1, 347)	Ordinary
$21 - Dec-11$	UBS AG, London Branch UBS AG, London Branch	Sell Sell	172 3	(274)	Ordinary
05-Jan-12	UBS Securities Australia Ltd	Sell	14,100	(5) (20,000)	Ordinary Ordinary
06-Jan-12	UBS Securities Australia Ltd	Sell	14,078	(20, 100)	Ordinary
$11$ -Jan-12 $11 - Jan - 12$	UBS Securities Australia Ltd	Sell	13,274	(17, 381)	Ordinary
$12$ -Jan-12	UBS AG, Australia Branch UBS Securities Australia Ltd	Stock received Sell	N/A	100,000	Ordinary
$20$ -Jan-12	UBS AG, London Branch	Buy	18,012 359	(23, 419) 470	Ordinary Ordinary
$23$ -Jan-12	UBS AG, London Branch	Buy	100	132	Ordinary
02-Feb-12	UBS Global Asset Management Ltd	Buy	404,424	531,542	Ordinary
06-Feb-12 15-Feb-12	UBS Global Asset Management Ltd UBS Securities Australia Ltd	Sell	36,159	(43,061)	Ordinary
$16$ -Feb-12	UBS Securities Australia Ltd	Sell Sell	34,989 11,211	(42, 421) (13, 879)	Ordinary
22-Feb-12	UBS Securities Australia Ltd	Buy	8,200	10,000	Ordinary Ordinary
22-Feb-12	UBS Securities Australia Ltd	Buy	1,796	2,202	Ordinary
$22$ -Feb-12	UBS Securities Australia Ltd	Buy	308,605	395,242	Ordinary
23-Feb-12 23-Feb-12	UBS Securities Australia Ltd UBS Securities Australia Ltd	Sell Buy	8,150	(10,000)	Ordinary
28-Feb-12	UBS Securities Australia Ltd	Sell	2,089 90,410	2,561 (100,000)	Ordinary Ordinary
$07-Mar-12$	UBS AG, London Branch	Sell	567	(603)	Ordinary
08-Mar-12	UBS AG, London Branch	Sell	6,561	(7, 166)	Ordinary
$12$ -Mar-12 $13-Mar-12$	UBS AG, London Branch	Sell	1,134	(1, 185)	Ordinary
$13 - \overline{Mar-12}$	UBS Securities Australia Ltd UBS AG, London Branch	Sell Sell	15,206	(15,800)	Ordinary
$14-Mar-12$	UBS Securities Australia Ltd	Sell	2,119 10,250	(2, 201) (10,000)	Ordinary Ordinary
15-Mar-12	UBS Securities Australia Ltd	Buy	34,479	35,000	Ordinary
$15-Mar-12$	UBS Securities Australia Ltd	Sell	25,625	(25,000)	Ordinary
15-Mar-12 $16 - \overline{Mar-12}$	UBS AG, London Branch UBS Global Asset Management Ltd	Buy	653	651	Ordinary
$16$ -Mar-12	UBS Global Asset Management Ltd	Buy Buy	195,508 195,508	214,844 214,844	Ordinary
$21$ -Mar-12	UBS Global Asset Management Ltd	Buy	155,920	172,231	Ordinary Ordinary
$21 - \sqrt{7} - 12$	UBS AG, London Branch	Stock received	N/A	850,318	Ordinary
22-Mar-12	JUBS Securities Australia Ltd	lBuy	18,100	20,000	Ordinary
22-Mar-12 $22 - \text{Mar} - 12$	UBS Securities Australia Ltd UBS AG, London Branch	Sell	125,870	(139,995)	Ordinary
$23-Mar-12$	UBS AG, London Branch	Stock returned Stock returned	N/A N/A	(18, 732) (55, 618)	Ordinary Ordinary
$26 - \frac{1}{2}$	UBS Securities Australia Ltd	Buy	522,603	604,165	Ordinary
$26$ -Mar-12	UBS Securities Australia Ltd	Buy	22,504	26.034	Ordinary
26-Mar-12	UBS AG, London Branch	Stock returned	N/A	(30,000)	Ordinary
27-Mar-12 27-Mar-12	UBS Securities Australia Ltd UBS Securities Australia Ltd	Buy Sell	41,029 10,293	45,466	Ordinary
$27 - \frac{1}{2}$	UBS Securities Australia Ltd	Buy	125,870	(11,500) 139,995	Ordinary Ordinary
27-Mar-12	UBS Securities Australia Ltd	Sell	125,744	(139,995)	Ordinary
27-Mar-12	UBS Securities Australia Ltd	Buy	125,870	139,995	Ordinary
$27 - \text{Mar}-12$ 28-Mar-12	UBS AG, London Branch	Stock returned	N/A	(4, 711)	Ordinary
28-Mar-12	UBS Securities Australia Ltd UBS Securities Australia Ltd	Sell Buy	125,744 125,744	(139,995) 139,995	Ordinary Ordinary
28-Mar-12	UBS Securities Australia Ltd	Sell	125,870	(139,995)	Ordinary
$28 - \text{Mar-12}$	UBS Securities Australia Ltd	Buy	4,162	4.574	Ordinary
28-Mar-12	UBS Securities Australia Ltd	Buv	20,105	21,963	Ordinary
$28 - \text{Mar}-12$ $29$ -Mar-12	UBS AG, London Branch UBS Securities Australia Ltd	Stock returned	N/A 12,511	(61, 699)	Ordinary
29-Mar-12	UBS Securities Australia Ltd	Buy Buy	42,830	13,279 45,608	Ordinary Ordinary
29-Mar-12	UBS AG, London Branch	Stock returned	N/A	(45, 812)	Ordinary
$30$ -Mar-12	UBS Securities Australia Ltd	Buy	18,312	19,000	Ordinary
$30$ -Mar-12	UBS AG, London Branch	Stock returned	N/A	(11, 843)	Ordinary
02-Apr-12 02-Apr-12	UBS Securities Australia Ltd UBS Global Asset Management Ltd	Buy Buy	13,510 2,895,891	14,000 3,016,553	Ordinary Ordinary
02-Apr-12	UBS AG, London Branch	Stock returned	N/A	(621, 903)	Ordinary
03-Apr-12	UBS Securities Australia Ltd	Sell	10,296	(10, 243)	Ordinary
03-Apr-12	UBS Securities Australia Ltd	Buy	26,000	26,000	Ordinary
03-Apr-12 03-Apr-12	UBS Securities Australia Ltd UBS Securities Australia Ltd	Sell	1,121	(1, 104)	Ordinary
$04 - Apr - 12$	UBS Securities Australia Ltd	Buy Buy	29,958 19,700	29,800 20,000	Ordinary Ordinary
04-Apr-12	UBS Securities Australia Ltd	Buy	50,303	51,800	Ordinary
04-Apr-12	UBS AG, Australia Branch	Stock received	N/A	1,200,000	Ordinary