Aminex Regulatory News (AEX)

Aminex PLC ("Aminex" or "the Company")

TANZANIA RIG CONTRACT

Aminex announces that it has signed a rental contract for use of the Caroil-6 drill rig at Nyuni Island, offshore Tanzania. The Caroil-6 will be used to drill the Nyuni-2 well, targeting a large Neocomian-age gas prospect, and the rig will be mobilised to Nyuni Island within 60 days. Nyuni-1 was drilled and suspended in 2004, having encountered gas in shallower Albian-Aptian sands. Nyuni-2 is an exploration well and will be drilled from the same site as the suspended Nyuni-1 well, but deviated to the south-east at an angle of approximately 30 degrees from vertical. Planned total vertical depth is approximately 2975 metres and measured depth approximately 3380 metres.

The Caroil-6 was successfully used for drilling Aminex's Kiliwani North-1 discovery well in 2008. It has since been upgraded with a top-drive and additional mud pump capacity.

Aminex chairman Brian Hall commented: "Finalising a contract for Caroil-6 is the first major step in our 2011 Tanzanian drilling programme, following our recent fund-raising exercise. Shareholders will be notified as soon as the Nyuni-2 well has been spudded".

For further information please contact:

Aminex PLC +44 (0) 20 7291 3100

Brian Hall - Chairman

Pelham Bell Pottinger +44 (0) 20 7861 3112 or +44 (0)7802 442 486

Archie Berens