Pensana Rare Earths planned to develop Longonjo Rare Earth Project, in Longongo, Huambo, Angola. China Great Wall Industry Corporation was the contractor for construction, installation and financing. Spanning 21 square kilometer, the project was located near the town of Longonjo in central Angola. The project would produce an average of 60,000 tons of rare earth concentrate in 9 years. The project was developed under EPCF model. Once completed, the mine would produce 6 per cent of the global supply of these rare earth metals.