Ann: Bethanga Porphyry Cu-Au Fertility Study Positive Results, page-33

Yes, China, now connect the metallurgical processing methods in the 1800s (and I will give you up until the 1930s too) with your comment about explorers in the last 30 years.

Here I'll post some hints and tips from the material I will use to correct you



Hmmm I wonder if the most recent holder of Bethanga before Nexus actually got around to following up before they failed due to poor management... I guess you already know this and forgot to metion it - or didn't you know?

I wonder what methods of extraction and processing they were using between 1878 and 1939, do you know China?