Mineral Processing Circuit

This section of the Technical Report outlines the Recovery Methods for the Mine 14 Project, focusing on the design and operation of a Coal Preparation Plant (CPP). Summit intends to sell the Mine 14 coal into export metallurgical coal markets. Due to the high ash content of the Run-of-Mine (ROM) coal (+15% adb), processing is required to reduce ash below 8% db to meet market specifications. Dr. Peter J. Bethell of Bethell Processing Solutions LLC was engaged to design the CPP flowsheet, which serves as the basis for permitting and construction specifications.

The Pasto Bueno Tungsten Mine, operated by Malaga, Inc., is an underground operation located in Peru. The mine processes ore through a sequential three-plant system consisting of the Huaura Gravity Separation Plant, Huaura Magnetic Separation Plant, and Consuzo Magnetic Separation Plant. The facility currently processes approximately 350 tonnes of ore per day, with a nominal capacity of 500 tonnes per day.

This technical report details the mineral processing operations for the Timmins West Mine (TWM) ore, which is hauled via surface highway trucks to the Bell Creek Mill facility in South Porcupine, Ontario. The Bell Creek Mill is a designed 5,468 tpd processing plant that utilizes a one-stage crushing circuit, ore storage dome, one-stage grinding circuit with gravity recovery, followed by pre-oxidation and cyanidation of the slurry with carbon-in-leach (CIL) and CIP recovery. The mill has undergone significant expansions since its re-commissioning in 2009, reaching a maximum one-day tonnage of 6,000 tpd in 2020.

The Juanicipio Mineral Resource and Mineral Reserves NI 43-101 Technical Report details the processing operations for the Juanicipio project, operated by MAG Silver Corp. The processing plant commenced operation in March 2023 with a nominal capacity of 4,000 tpd. The facility processes underground ore through a comminution circuit involving primary jaw crushing, SAG and ball milling, followed by sequential flotation circuits for lead, zinc, and pyrite concentrates. Recent operational data from 2023 indicates the plant is achieving designed throughput and recoveries for silver, lead, and zinc, while gold recovery remains in an optimization phase.

This Preliminary Economic Assessment (PEA) outlines the processing facilities and recovery methods for the Dewey Burdock uranium project. The project utilizes a Central Processing Plant (CPP) located on the Burdock property and a Satellite facility at Dewey, connected by a resin transfer system over a distance of approximately four miles. The processing circuits are designed to recover uranium from pregnant lixiviant solution using ion exchange (IX), elution, precipitation, dewatering, drying, and packaging.