DOTZ NANO LIMITED — Major Shareholding Notification 2012

Oct 14, 2012

O M HOLDINGS LIMITED

(ARBN 081 028 337)

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No. Pages Lodged: 4

15 October 2012

ASX Market Announcements ASX Limited 4[th] Floor, Exchange Centre 20 Bridge Street Sydney NSW 2000

Dear Sir/Madam

NORTHERN IRON LIMITED ACN 125 264 575 NOTICE OF CHANGE OF INTERESTS OF SUBSTANTIAL HOLDER

Pursuant to section 671B of the Corporations Act 2001 (Cth) please find attach e d a notice of change of interests of substantial holde r relating to OM Holdings Limited's (“OMH”) sha r eholding in Northern Iron Limited (“NFE”).

OMH holds 52,482,500 ordinar y shares in NFE representing approximately 11. 0 3% of NFE's issued equity capital following the co m pletion of the institutional component of NFE's recently announced entitlement offer, in which OMH d id not participate.

Yours faithfully OM HOLDINGS LIMITED

Heng Siow Kwee/Julie Wolseley Company Secretary

Enc.

#08 – 08, Parkway Parade 80 Marine Parade Road, 449269 Singapore Tel: 65-6346 5515 Fax: 65-6342 2242 Email address: Website: www.omholdingsltd.com ASX Code: OMH

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BACKGROUND PROFILE OF OM HOLDINGS LIMITED

OMH listed on the ASX in March 1998 and has its foundations in metals trading – incorporating the sourcing and distribution of manganese ore products and subsequently in processing ores into ferromanganese intermediate products. The OMH Group now operates commercial mining operations – leading to a fully integrated operation covering Australia, China and Singapore.

Through its wholly owned subsidiary, OM (Manganese) Ltd, OMH controls 100% of the Bootu Creek Manganese Mine (“Bootu Creek”) located 110km north of Tennant Creek in the Northern Territory.

Bootu Creek has the capacity to produce 1,000,000 tonnes of manganese product annually. Bootu Creek has further exploration potential given that its tenement holdings extend over 2,400km[2] .

Bootu Creek’s manganese product is exclusively marketed by the OMH Group’s own trading division with a proportion of the product consumed by the OMH Group’s wholly-owned Qinzhou smelter located in south west China.

Through its Singapore based commodity trading activities, OMH has established itself as a significant manganese supplier to the Chinese market. Product from Bootu Creek has strengthened OMH’s position in this market.

OMH is a constituent of the S&P/ASX 300, a leading securities index.

OMH holds a 26% investment in Ntsimbintle Mining (Proprietary) Ltd, which holds a 50.1% interest in the world class Tshipi Borwa manganese project in South Africa.

OMH also holds the following strategic shareholding interests in ASX listed entities:

• 11% shareholding in Northern Iron Limited (ASX Code: NFE), a company presently producing iron ore from its Sydvaranger iron ore mine located in northern Norway; and

• 4% shareholding in Shaw River Manganese Limited (ASX Code: SRR), a company presently exploring for manganese in Namibia, Western Australia and Ghana.

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