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Blocklisting Application

September 23, 2011

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September 23, 2011

Aureus Mining Inc.

TSX : AUE

AIM : AUE

NEWS RELEASE

Blocklisting Application

Aureus Mining Inc. (“Aureus” or the “Company”) announces that it has made a blocklisting application to the London Stock Exchange for up to 9,935,121 common shares of nil par value each (“Common Shares”). These Common Shares are to be issued pursuant to the exercise of options under the Aureus Mining Stock Option Plan as defined in the Company’s AIM Admission document dated 7 April 2011.

All Common Shares issued pursuant to the exercise of options under the option awards described above will rank parri passu with existing Common Shares. It is expected that the blocklisting will become effective on 29 September 2011.

About Aureus Mining Inc.

The company’s assets include the New Liberty gold deposit in Liberia (the “New Liberty Gold Project”), which has an estimated Indicated Mineral Resource of 751,000 ounces of gold grading 4.17 g/t (contained in 5,599,000 tonnes) and an estimated Inferred Mineral Resource of 762,000 ounces of gold grading 3.40 g/t (contained in 7,040,000 tonnes). A preliminary economic assessment (“PEA”) of the New Liberty Gold Project filed in December 2010 outlined a robust open pit gold mine with a pre-tax NPV of US$234 million based on an $1100/oz. gold price and a 10% discount rate. The PEA outlined an 8.5 year mine life with approximate production of 100 000 ounces per year in the first five years. The New Liberty Gold Project is being advanced through to a definitive feasibility study.

The New Liberty Gold Project locates within the Bea Mountain mining license which covers 457 km2 and has a 25 year, renewable, mineral development agreement. The Bea Mountain mining license also hosts the proximal gold targets of Ndablama, Weaju, Silver Hills and Gondoja which are the focus of exploration programs during 2011.

The company also has gold assets within exploration properties in Sierra Leone and Cameroon.

Contact Information 

Aureus Mining Inc.

David Reading / Jeremy Cave

Tel: +44 (0) 20 7257 2930

Buchanan 

Bobby Morse / James Strong

Tel: +44 (0) 20 7466 5000

Evolution Securities Limited 

Jeremy Ellis / Neil Elliot

Tel: +44 (0) 20 7071 4300

RBC Capital Markets 

Martin Eales / Richard Hughes

Tel: +44 (0) 20 7653 4000

Qualified Person

The Company’s Qualified Person responsible for preparing this release is David Reading, who holds a MSc in Economic Geology from University of Waterloo, Canada and is a Fellow of the Institute of Materials, Minerals and Mining. David Reading is the President and CEO of Aureus Mining Inc. and consents to the inclusion in the announcement of the matters based on their information in the form and context in which it appears and confirms that this information is accurate and not false or misleading.