Mineral Processing Circuit

This NI 43-101 Technical Report outlines the Preliminary Economic Assessment (PEA) for the Cebolleta Uranium Project. The report details the proposed mining and recovery methods for the mineralized material, which includes both underground and open-pit mining techniques. The primary focus of the technical assessment is the processing circuit designed to extract uranium from the ore body.

The Grota do Cirilo Lithium Project is a multi-phase development comprising the Xuxa, Barreiro, and Nezinho do Chicao (NDC) deposits. The project utilizes a Dense Media Separation (DMS) circuit to produce spodumene and petalite concentrates. Phase 1 focuses on the Xuxa deposit with a capacity of 1.7 Mtpa, while Phase 2 and 3 involve the Barreiro and NDC deposits, with a combined capacity of 3.9 Mtpa in Scenario 3.

This NI 43-101 Technical Report details the recovery methods for the Idaho Cobalt Project, focusing on a concentrator and a Cobalt Production Facility (CPF). The concentrator utilizes a typical froth flotation recovery plant with two stages of crushing and one stage of grinding prior to flotation in a rougher/cleaner circuit. The design includes a coarse stockpile with 800 tons of live storage capacity, sufficient for one full operating day. Thickened concentrate is dewatered and trucked to the CPF for further processing to produce battery grade cobalt sulfate, copper concentrate, copper sulfate, magnesium sulfate crystals, and gold loaded carbon.

This Preliminary Economic Assessment (PEA) details the processing facility design for the Tuvatu Gold Project in Fiji. The proposed plant is designed to process underground mine feed with a nominal capacity of 219,000 tonnes per annum (tpa), operating at a rate of 600 tonnes per day (tpd). The facility is designed for a mine life of 10 years, with an overall availability of 91% for the grinding circuit and 75% for the crushing circuit.

This NI 43-101 Technical Report outlines the recovery methods for the San Antonio Project located in Baja California Sur, Mexico. The process design utilizes existing technologies and proven equipment, focusing on crushing, agglomeration, and heap leaching, followed by off-site production of doré. The plant is designed to process 4 million tonnes of material annually, with a daily throughput of approximately 10,595 tonnes of leach-grade material.

The Yellowhead Technical Report (July 2025) outlines the recovery method for the Yellowhead Project, a sulphide concentrator designed for an open pit mine. The plant is designed to process 90,000 tonnes per day of ore, producing a marketable copper concentrate with payable gold and silver. The process involves three stages of comminution, three stages of flotation, and final concentrate dewatering.

This section of the P&E Mining Consultants Technical Report No. 273 details the recovery methods for the Luz del Cobre facility, operated by Red Tiger Mining Inc. The facility is a conventional sulphuric acid heap leach, solvent extraction (SX), and electro-winning (EW) plant designed to produce high-purity copper sheets. Operations commenced in May 2012, and the process has undergone continuous improvement since commissioning. The facility processes oxidized and mixed copper ores, crushing them to a fine size before stacking on a valley heap leach facility.

Bacanora Minerals’ January 2013 preliminary economic assessment reports a laboratory recovery range of 77% to 88% B2O3, and recommends a boric acid circuit in the pilot plant.