ORBMINCO LIMITED — Board/Management Information 2007

Aug 12, 2007

MONARO MINING NL ABN: 99 073 155 781

Tel: +61 2 4647 9566 Fax: +61 2 4647 7332 All Correspondence to: PO Box 427 Narellan NSW 2567

13[th] August 2007

ASX Announcement

Operations Update

• Appointment of Managing Director and Company Secretary/CFO

• � Queensland Uranium Tenements Granted

1) Executive Management Changes

The Company is pleased to announce two executive management changes. In the first instance and effective from today’s date, Mr Mart Rampe, currently acting as the Executive Director of the Company has been elevated to the position of Managing Director. Mr Rampe has been the Executive Director since the Company first listed in 2005.

Secondly, Ms Anne Adaley has been appointed as Company Secretary and Chief Financial Officer. Ms Adaley has extensive mining industry experience and has worked with a number of listed Australian exploration and mining companies over the last 25 years. She is well experienced in a listed public company environment and brings to Monaro strong skills in financial management and investor relations.

2) Australian Uranium Projects: NW Queensland (Monaro earning up to 75%)

Three Exploration Permits (Red Bull, Mt Brown and Mt Fort Bowen) in NW Queensland have been granted by the Queensland Department of Mines and Energy. Details on these tenements are outlined below.

Red Bull

Located 214km NE of Cloncurry, the Red Bull project comprises over 240km[2] and partially covers a significant magnetic anomaly which is interpreted to lie on the western edge of the Georgetown Block. This aeromagnetic anomaly represents an attractive drilling target given the presence of strong magnetic linear intersections, a significant regional fluorine anomaly in bore waters, and the proximity to a large intrusive body that may have acted as a heat engine and/or a source of metals.

The presence of a strong fluorine anomaly (>30 ppm F) in artesian bore water just down-flow and to the NW of the magnetic anomaly (and fault structures) raises the possibility of an alteration-mineralizing event that has either introduced (and/or released) fluorine into the system. Anomalous fluorine geochemistry is associated with Olympic Dam style mineralisation.

As previously reported, an Exploration Permit application has been lodged covering an additional 104km[2] over the north eastern portion of the aeromagnetic anomaly, while a large portion of the area remains under restriction (Restricted Area 321) pending the completion of a QLD Department of Mines and Energy magnetic and gravity survey.

NARELLAN NSW 2567 Email: info@monaromining.com.au

Mt Brown & Mt Fort Bowen

The Mt Brown and Mt Fort Bowen projects are located approximately 140km NE of Cloncurry and cover a total area of 629km[2] . Both tenement areas contain outcropping metamorphosed sediments consisting of gently dipping micaceous sandstone, polymict conglomerate, mica schist and sandstone. These are interpreted to be part of a basement horst (Mt Fort Bowen Ridge) lying midway between the Mt Isa Inlier and the Georgetown Block.

There are magnetic lineaments that both parallel and cross-cut the basin and horst structure and the intersection points of these lineaments may constitute structural targets for base metal mineralisation. The Company will also look at possible stratabound deposits within the Proterozoic sediments lying beneath the Paleozoic to Recent cover rocks. Other potential exploration targets include roll front uranium mineralization originating from the erosion of granites from within the Georgetown Block.

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Location of granted
licences
Northern Territory
Location of Monaro’s uranium projects Hapsburg ELA’s/EPA’s
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Figure 1 : Location of granted exploration licences. A total of 8 tenements have now been lodged in this prospective part of North-West Queensland. See Figure 2 for detail.

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Red Bull
Mt Fort Bowen
Mt Brown
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Figure 2: Location of Tenements - detail

The review of exploration activities and results contained in this report in relation to the Australian projects is based on information compiled by Mart Rampe , a Member of the Australasian Institute of Mining and Metallurgy. He is the Managing Director of the Company and has sufficient experience which is relevant to the style of mineralisation and types of deposits under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the December 2004 edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the JORC Code). Mart Rampe consents to the inclusion of this information in the form and context in which it appears in this report.

Further Information

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For further information please contact Mart Rampe, Managing Director, on (02) 46479566 or Warwick Grigor, Chairman, on (02) 92470077.

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