Hycroft Mining Holding Corp (HYMC)

[Wmucca]

My understanding was the novel process was intended to oxidize the sulfide (refractory) ores that are predominant at Hycroft then traditionally leach them on the heap leach. My guess is the oxidation rate was not achieved, thus the gold and silver recoveries achieved would be lower than planned

Past flow sheets for Hycroft are more traditional for these refractory ore. For these ore is crushed, fine ground then concentrated through floatation. Concentrate is then either sent to a smelter off site or oxidized with an Autoclave and leached on site. This process typically achieves gold and silver recoveries in the 90%+

Hycroft ore is predominantly sulfide ore that will require some type of refractory processing to achieve commercial recoveries