Fortuna Silver Mines Inc

Fortuna Silver Mines operates the San Jose Mine in Oaxaca, Mexico, where a tailings dam overflow in October 2018 released mining waste into the surrounding environment following heavy rains. This incident sparked documented local controversy and media investigations over whether the waste contaminated community soil and water sources with toxic materials.

A 2021 journalistic investigation into the company cited original reports indicating the presence of toxic materials at levels that, in some cases, exceeded safety thresholds. Community reports and external analyses have alleged ongoing environmental damage and ecological harm linked to the mine's operations. While a Mexican court reinstated the mine's environmental impact authorization in 2023 and the company states the operation is in compliance, the history of the dam overflow and the persistent allegations of contamination from external sources constitute a documented pattern of environmental impact.