An updated prefeasibility study (PFS) for the Terronera silver/gold mine, in Mexico, has returned less robust economics than a prior study, prompting the Vancouver-based company to initiate an internal review of the PFS before proceeding to a full independent feasibility study.
Endeavour Silver explains that significant changes were made to the operations plan, capital and operating costs compared with the previous PFS, which was published in 2018. Although still positive, the new PFS returned less robust economics, the company said, without stating what those were.