CANYON RESOURCES LIMITED — Capital/Financing Update 2012

Aug 5, 2012

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Successful Completion of Due Diligence on Derosa Project, Burkina Faso

6th August 2012

Rumble Resources Limited (Rumble) is pleased to announce that the legal and technical due diligence has been completed on the Derosa project in Burkina Faso, West Africa.

Rumble has informed Canyon Resources Limited (ASX: CAY) that it will exercise its option to proceed with the Joint Venture for the Derosa Project.

Summary of the Derosa Project

The Derosa Project consists of 6 contiguous tenements covering an area of over 1,300km². The Project covers major regional structure interpreted from aeromagnetic data and is easily accessible by sealed road, being approximately 125 km northwest of the capital Ouagadougou. The licences are adjacent to the Reo Project operated by Middle Island Resources Ltd (ASX: MDI).

The Derosa Project is structurally complex with several large scale north-south and northeast-southwest trending shear zones interpreted across the project area from airborne magnetics data. The main shear zones are interpreted to represent Birimian greenstone belts consisting of mafic to felsic volcanics and sediments which are surrounded by granitoid intrusions. Most of the project area is covered by a 1 to 10m thick veneer of lateritised transported gravel and sand. No evidence of previous exploration has been found in the project area and Rumble considers Derosa to represent an exciting grass roots gold exploration opportunity.

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----- Start of picture text ----- Rumble Resources LtdSuite 24, 22 Railway RoadSUBIACO WA 6008T +61 8 6555 3980F +61 8 6555 3981----- End of picture text -----

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----- Start of picture text ----- ASX: RTR31.9M Ordinary shares10.5M Listed Options 6.6M Unlisted OptionsBoard of DirectorsMr Andrew McBainManaging DirectorMr Michael SmithNon-executive DirectorMr Matthew BanksNon-executive Director----- End of picture text -----

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----- Start of picture text ----- Mr David PalumboCompany Secretary----- End of picture text -----

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Summary of the Joint Venture Agreement

Under the terms of the Agreement between Canyon and Rumble, Rumble will earn between a 51% to 75% interest in the Derosa Project upon the completion of expenditure obligations set out in the following Summary of the Joint Venture Agreement.

Rumble and Canyon have agreed to the following terms in the Agreement:

• Consideration Shares - Rumble to issue Canyon or its nominee with 1,500,000 Rumble shares.

• Minimum Spend - Rumble to spend a minimum of USD$250,000 on the Derosa Project before the Joint Venture can be terminated.

• Vendor Agreements – Rumble will comply with the terms of the three purchase agreements with the vendors.

• Earning 51% interest - Rumble to spend USD$1.5 million on the Derosa Project by 31 March 2014 to earn a

  • 51% interest including any vendor payments.

• Earning 75% interest - Rumble will acquire a further 24% interest in the Derosa Project by spending a further

  • USD$1,500,000 by 31 March 2017, including any vendor payments.

• Canyon Carried Interest - Canyon will retain a 25% free carry interest in Canyon Derosa up to the decision to do a pre-feasibility report. At that point, Canyon has the option to commit to its share of funds ongoing or to reduce via an industry standard dilution clause.

• Royalty - If Canyon elects to dilute to 0% ownership of the Derosa Project, Canyon will retain a 1.5% Net Smelter Royalty.

• Good Standing – Rumble agrees to keep all licenses in good standing.

• First Right of Refusal - Rumble and Canyon have provided each other with first right of refusal on their equity in the Derosa project.

For further information visit rumbleresources.com.au or contact enquiries@rumbleresources.com.au.

Andrew McBain Managing Director

About Rumble Resources Limited

Rumble Resources Limited is an Australian based exploration company, officially admitted to the ASX on the 1st July 2011. Rumble was established with the aim of adding significant value to its current gold and base metal assets and will continue to look at mineral acquisition opportunities both in Australia and abroad.