Mineral Processing Circuit

The Guanaceví Project is an operating mining facility located in Guanaceví, Mexico, operated by Endeavour Silver Corp. The project focuses on the extraction of silver and gold through a well-established processing plant. In 2021, the mine produced 4,316,819 ounces of silver and 13,378 ounces of gold, with a plant throughput of 414,355 tonnes at an average grade of 370 g/t silver and 1.09 g/t gold. Recoveries averaged 86.9% for silver and 91.8% for gold.

This NI 43-101 Technical Report outlines the Preliminary Economic Assessment (PEA) for the Escalones Copper Project by World Copper Ltd. The project proposes an open-pit mining operation utilizing a conventional heap leach system to recover copper from mineralized material. The processing circuit is designed for a 365-day per year, 24-hour per day operation, targeting a throughput of 50,000 tonnes per day of mineralized material.

This technical report outlines the proposed design for the Karma process plant, which is based on gold heap leach technology. The plant is designed to process 4 million tonnes per annum (Mtpa) of oxide and transition ore, with an additional 1.2 Mtpa of hard rock ore, delivered from five separate open pit mines: GGI, GGII, Kao, Rambo, and Nami. The ore is primarily oxide and transition material, with only a minimal amount of sulphide ore from Rambo and Nami pits being processed. The sulphide material from other pits is considered refractory and cannot be treated via heap leaching.

This technical report details the recovery methods employed at the Turk and Angelus Mine operated by New Dawn Mining Corp. The processing plant utilizes a conventional milling circuit consisting of three parallel ball mills with a combined capacity of approximately 600 tonnes per day. Ore is ground using steel balls and classified via hydro cyclones in a closed circuit. A Deswick stirred mill is employed for ultra-fine grinding of dump material to liberate residual gold.

This Preliminary Economic Assessment outlines the recovery methods for the Shirley Basin ISR Uranium Project, operated by Ur-Energy. The project is designed as a satellite facility to the Lost Creek Mine, located approximately 32 miles north of Wamsutter, Wyoming. The primary recovery method involves In-Situ Recovery (ISR) where uranium is extracted from the underground deposits using an Ion Exchange (IX) circuit housed in a metal building at the project site.