This is not a dig, but my take is VXR aren't focusing on gold, because of the years of work that has already been done to get this potentially highly profitable copper/zinc mine up and running.
A pivot would require more funds and perhaps more importantly, could be seen as a lack of conviction in the project, which would not be great for finance.
VXR Price at posting:
17.5¢ Sentiment: Buy Disclosure: Held