admin

The Doby George Pre-Feasibility Study outlines a heap leach processing route for gold recovery. The project involves crushing run-of-mine ore to 12.7mm and stacking on a leach pad. Pregnant solution is processed through carbon-in-columns, followed by Zadra desorption and electrowinning to produce doré bars.

The Mt. Hamilton Project is a gold and silver development project located in Nevada, USA, utilizing an open-pit mining method with a heap leach recovery process. The project is designed to process a leachable reserve of approximately 22.5 Mt of crushed ore from the Seligman and Centennial open pits. The recovery method involves a multi-lift heap leach with a carbon ADR (Adsorption, Desorption, Refining) plant, which was designed by KCA of Reno, Nevada, to facilitate detailed costing and construction scheduling for the 2014 Feasibility Study.

This technical report section details the process description and recovery methods for the Eagle Gold project. The gold recovery process is designed to leach approximately 11.5 Mt of ore per year with an average gold head grade of 0.65 g/t at an overall gold recovery of 76%. The operation utilizes a three-stage crushing plant operating at a nominal primary crushing rate of 29,500 t/d, feeding a Heap Leach Pad (HLP) system.

This technical report section details the operational performance and processing methods of the Piedras Verdes concentrator operated by Sierra Metals Inc. The plant utilizes a conventional concentration process including crushing, grinding, flotation, thickening, and filtration. Operational data from July 2018 to December 2019 indicates an average throughput of 3,224 tonnes per day, with improvements seen in Q4 2019 reaching 3,787 tpd.

Venture Gold Inc. has established a fully permitted mill site at Hukill Gulch in Clear Creek County, Colorado. This facility is designed to process sulfide ores containing gold and silver. Currently, the mill operates at a capacity of 60 tons per day on a stand-by basis, with plans to upgrade to 300 tons per day to support the Old Town Mine Project.

The CarLang A mineralization will be processed through a single, on-site plant with a design capacity of 120 thousand tonnes per day (ktpd) or 43.8 Mtpa, producing saleable nickel sulphide and magnetite (FeCr) concentrates. The plant is based on average head grades of 0.23% Ni and 5.3% Fe.

This Pre-Feasibility Study outlines a proposed processing rate of 3,280,000 tpa (9,000 tpd) for the Omai Gold Property. The design leverages historical experience from 1993 to 2005 operations by OGML, utilizing a combination of hard rock and soft material processing. The proposed flowsheet includes a gyratory crusher feeding a SAG mill circuit, followed by gravity concentration and leaching.