Hycroft Mining Holding Corp (HYMC)

[Saving Grace]

Metallurgical and Variability Test Work: The Company completed a substantial portion of
the metallurgical and flotation variability test work necessary for designing a sulfide milling
operation, establishing (i) a comprehensive understanding of how each geologic domain will
perform during operations and (ii) the processing components and reagents required to
optimize gold and silver recoveries. Metallurgical and flotation tests produced promising
results, with confirmed average flotation recoveries increasing to 89% for gold and 93% for
silver, up from 80% for both in the 2023 Hycroft TRS. These findings inform further process
development and refining of crushing and grinding studies. Combined with data from the Drill
Program, these results will guide mine plan design, mill circuit configuration, and ore haul
truck specifications, among other engineering considerations, to enhance the value of the
Hycroft Mine.

https://hycroftmining.com/_resources/news/nr-20240314.pdf