Marampa Mines Limited, a subsidiary of Gerald Group is engaged in the exploration, development, and production of high-grade iron ore concentrate, at Marampa in the Port Loko District, Northern Province of Sierra Leone. We undertake exploration, development and production of premium grade iron ore concentrate from estimated resources of approximately 1.7 billion tonnes. Branded Marampa BlueTM, the product is also one of the cleanest grades globally.