I'll see if I can find a design drawing or at least a photo of an existing NSC pressure leaching plant, and post a link to it. I have no idea whether or not this type of plant is what LSTG is proposing, since they have not responded to my request. They may be planning to use Nitric and Sulfuric acid solutions on a heap leach pile for all I know. I haven't seen any report of that having ever been attempted, though.
FYI, I've not seen any reporting in El Monitor or in El Sol on the Government processing plant one way or the other. I last checked about five minutes ago. Holy Week celebrations seem to be the focus of reporting today, with little business news of any kind. Violent crime seems to be taking a day off also.