ACACIA MINING PLC - Response to the Ministry of Energy & Minerals

3 March 2017

THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION

Acacia Mining plc

LSE:ACA

(“Acacia” or the “Company”)

Response to the Ministry of Energy and Minerals press release regarding the export of metallic mineral concentrates

Acacia notes today’s press release from the Ministry of Energy and Minerals regarding a ban on exports of gold/copper concentrate following a directive made by the President of the United Republic of Tanzania. In 2016, gold/copper concentrate amounted to approximately 30% of group revenues. At this stage, Acacia has ceased exports of gold/copper concentrate and is urgently seeking further clarification from the Ministry of Energy and Minerals. We will provide further updates as appropriate.

ENQUIRIES

For further information, please visit our website: http://www.acaciamining.com/ or contact:

Acacia Mining plc                            +44 (0) 20 7129 7150

Giles Blackham, Investor Relations

Bell Pottinger                         +44 (0) 20 3772 2500

Lorna Cobbett

About Acacia Mining plc

Acacia Mining plc (LSE:ACA) is Tanzania’s largest gold miner and one of the largest producers of gold in Africa. We have three producing mines, all located in north-west Tanzania: North Mara, Bulyanhulu and Buzwagi and a portfolio of exploration projects in Tanzania, Kenya, Burkina Faso and Mali.

Our approach is focused on strengthening our three core pillars; our business, our people and our relationships, whilst continuing to invest in our future. Our name change from African Barrick Gold to Acacia in November 2014 reflected a new approach to mining, and an ambition to create a leading African Company.

Acacia is a UK public company headquartered in London. We are listed on the Main Market of the London Stock Exchange with a secondary listing on the Dar es Salaam Stock Exchange. Barrick Gold Corporation is our majority shareholder. Acacia reports in US dollars and in accordance with IFRS as adopted by the European Union, unless otherwise stated in this announcement.