Getting a sniff of copper out in the Gawler craton is not hard. And ok your probably right 2% or whaterver. But my point stands.
Mining ground 800+ m down is a chalenge that people dont try and have a go at unless something good comes up. This is how exploration under cover is done.
You drill, get vectors out of your core and move on unless your hitting wide high % intersects.
P.S I am a Geologist.
AXT Price at posting:
5.5¢ Sentiment: Hold Disclosure: Held