Mineral Processing Circuit

The Kiniero Gold Project in Guinea is currently in the development phase, with a Technical Report completed in 2024 by Primero. The project is designed to process a blend of saprolite, laterite, transition, and fresh ores from open pit mining operations. The proposed process plant features a flexible metallurgical flowsheet capable of handling varying ore types while maintaining a nominal throughput of 5.0 Mtpa, with capacity to treat up to 6.0 Mtpa on high-oxide feed blends.

This NI 43-101 Technical Report outlines the feasibility study for the Quebrada Honda I and II project in Chile. The project involves two distinct processing streams: an existing supergene heap leach operation and a new QH1-2 concentrator plant. The existing operation utilizes heap leaching and SX/EW for copper recovery, while the new plant design includes primary gyratory crushing, SAG and ball milling, flotation, and concentrate thickening. Active mining temporarily ceased in 2013 and is scheduled to recommence in 2021.

This section of the NI 43-101 Technical Report outlines the proposed process plant design for the Galore Creek Copper–Gold Project. The facility is designed to process a blend of material from various zones of the deposit, primarily the Central Zone, using conventional crushing, grinding, and flotation methods. The plant is designed to operate continuously at 365 days per year with a nominal throughput of 95,000 tonnes per day, capable of handling up to 110,000 tonnes per day depending on ore competence.

Meridian Mining’s technical report on the Bom Futuro project in Rondônia, Brazil, effective December 7, 2017, describes a gravity and magnetic flowsheet for reclaiming old tin tailings with trucks and then a dredge.

This NI 43-101 Technical Report presents a Preliminary Economic Assessment (PEA) for the Carlin Vanadium Project located in Nevada, USA. The project is currently in the development stage, with a planned mine life of 16 years. The operation involves an open pit mine supplying mill feed to a processing facility designed to treat two distinct mineralization types: oxide and non-oxide mudstone-hosted mineralization. The process design assumes mineralization supply from active mining for the first 11 years, followed by stockpile treatment and acid-plant only operation.

The Porcupine Complex, located in Timmins, Ontario, Canada, is a multi-mine operation comprising the Dome, Borden, Hoyle Pond, and Pamour sites. Currently operated by Newmont, the project is the subject of a 2024 Preliminary Economic Assessment (PEA) by Discovery Silver, who are in the process of acquiring the assets. The complex has a long operating history dating back to 1910 at the Dome site, with significant infrastructure already in place including processing plants, tailings storage facilities, and power distribution networks.