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The Cotabambas Project Preliminary Economic Assessment (PEA) outlines a conventional copper porphyry flotation concentrator plant designed to process sulphide, mixed, and oxide gold mineralization. The facility is planned with a nominal processing capacity of 80,000 tonnes per day, targeting a life-of-mine average concentrate grade of 27.0% Copper. The project utilizes open-pit mining methods and is currently in the development stage, with a mine life estimated at 17 years based on the resource model.

This NI 43-101 Technical Report details the feasibility study design for the Vareš Project, focusing on the Rupice underground mine and the Vareš Processing Plant. The process flow is designed to treat ore through a sequential flotation process to produce silver-lead and zinc concentrates. The design is based on testwork by Wardell-Armstrong International, Metso Outotec, and Ausenco, aiming to minimize capital cost while ensuring reliability.

The Golden Quarry and Camperdown Mines Technical Report details the processing operations for New Dawn Mining Corp as of December 2012. The reduction plant is located at Golden Quarry Mine and processes mineralized material sourced from the Camperdown opencast, Wanderer underground, and Golden Quarry underground operations. The plant treats approximately 600 to 700 tons of mineralized material per day, with a throughput rate of 25 to 32 tons per hour. Material is transported via dump trucks and conveyors to a stockpile before entering the crushing circuit.

This NI 43-101 Technical Report details the recovery methods and processing plant operations at the Jerritt Canyon Gold Mine, operated by First Majestic Silver Corp. Mining and processing commenced in 1981, initially utilizing alkaline chlorination to passivate carbonaceous constituents. Due to increased chlorine consumption from sulfide sulfur, the facility transitioned to a whole ore roaster in 1989, which treats both carbonaceous and sulfide refractory materials. The roaster system utilizes oxygen to fluidize the bed and oxidize the mineralized material, achieving design recoveries of 87% to 90%.

The Valenciana Mines Complex (VMC) utilizes two primary processing facilities owned by GSilver subsidiaries: the Cata processing plant and the El Cubo (CMC) plant. As of the report date, the Cata plant serves as the primary processing facility for mineralized material extracted from the VMC, with a full capacity of 1,200 tonnes per day. The El Cubo plant, located approximately 20 km away, was utilized as a backup or alternative facility prior to the full re-opening of Cata in December 2022. Both facilities process sulphide concentrates containing silver and gold, which are subsequently sent off-site for smelting and refining.

The Minto Mine processing plant was constructed in 2006-2007 and commenced commercial production in October 2007. Following a period of care and maintenance starting in October 2018, the operation was acquired by Pembridge Resources and the plant was recommissioned in October 2019. The facility is designed to process mineralized material using standard industry comminution, flotation, and dewatering circuits.