Our Story

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Ghana Manganese Company Limited (GMC) has grown over 105 years to become one of the leading producers of manganese carbonate ore, committed to responsible mining. 

The history of the manganese mine at Nsuta-Wassa covers a long period.

In summary, the Nsuta Mine has been in continuous operation for over a hundred and five (105) years – the last twenty-five (25) years being under the management of GMC.

The GMC Mining Lease Concession extends over an area of 170 square kilometers, for which the mining operations are mainly centered at Nsuta. The company has stayed true to its mission and has become one of the global leaders with the highest manganese-to-iron ratio ores in the market (Mn: Fe ~31) and is low in phosphorous, alumina, and other heavy metal impurities.

Embracing innovation and technology, GMC consistently pursues a program of continuous improvement.


To maintain its position as an important market leader in mining and exporting of manganese ore.


To be an internationally successful operating mining company, undertaking safe mining practices combined with cost effective production methods. To achieve this, we recruit, retain, and develop skilled employees.


• Open door approach to management
• Respect for cultural diversity
• Tolerance at the workplace