Gryphon Adds CIL Operation to Banfora Heap-leach Planning

Gryphon Minerals has completed an optimization and scoping study that adds a 1-million-mt/y carbon-in-leach (CIL) plant to its previously planned 2-million-mt/y Banfora heap leach project in southwest Burkina Faso. The study’s base case calls for initial development of the heap-leach project for a capital cost of $85 million, followed two years later by a CIL plant at a cost of $45 million, which could be funded with early cash flow from the initial heap leach operation.

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Debottlenecking Will Expand Tiger’s Kipoi Copper Production

Tiger Resources has reported positive results from an engineering and costing study of a planned debottlenecking project at its Kipoi copper SX/EW plant in the Democratic Republic of the Congo. The project is expected to increase the plant’s production of copper cathodes from 25,000 mt/y to 32,500 mt/y and is backed by mine reserves to support the increased operating rate over a period of more than 16 years.

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Lucara Recovers Exceptional Diamonds at Karowe

Lucara Diamond Corp.’s Karowe mine in Botswana is continuing to deliver exceptional diamonds, including four during the first half of August alone. Among the four was a Type IIa, 336-carat diamond, accompanied by a 184-carat stone, a 94-carat stone, and an 86-carat stone. A 12-carat pale pink diamond was also recovered.

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Kefi Nearing Construction Start for Tulu Kapi

Trenching work under way at the Tulu Kapi gold project. (Photo: Kefi Minerals)Kefi Minerals has reported the results of a definitive feasibility study (DFS) of its Tulu Kapi gold project, located approximately 360 km west of Addis Ababa, Ethiopia. The study estimates total project gold production of 960,000 oz over a 13-year operating life. All-in sustaining costs are estimated at about $780/oz of gold produced. Startup capital costs are estimated at $120 million, based on use of contract mining.

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