Patent granted in Botswana, Namibia and Zimbabwe

9 April 2015

Alexander Mining plc

("Alexander" or the "Company")

Patent Granted in Botswana, Namibia and Zimbabwe for a Method for Extracting Zinc from Aqueous Ammoniacal Solutions

Alexander Mining plc is pleased to report that it has received notification that its MetaLeach Limited subsidiary has now been granted a patent by the African Regional Intellectual Property Organization ("ARIPO") in the following designated states: Botswana, Namibia and Zimbabwe for a Method for Extracting Zinc from Aqueous Ammoniacal Solutions. The patent, number AP 2944 has a standard term of 20 years from the effective date of 22 December 2009 (being the date of original filing of the PCT Application from which the ARIPO patent is derived).

Martin Rosser, Chief Executive Officer, said: "The grant of our patent in several countries of interest in Africa is another welcome expansion of the granted patent coverage for our proprietary processing technology for zinc."

The patent, which has also been granted in the USA, Canada, Australia and Mexico (as announced on 1 August 2013, 18 March 2014, 10 September 2012 and 8 April 2013, respectively), describes a method for extracting zinc from an aqueous ammoniacal zinc solution containing impurities.

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