"Veins systems are some of the most costly types of gold to mine and we still don't know how deep or wide they are with gold."
Funny you should mention thi Clint. If I'm not mistaken,Goldcorp has one of the lowest cost producers in the industry and their flagship property is Red Lake, a greenstone belt vein structure. Sounds familiar?
I will give you this though "We still don't know how deep or wide they are with gold" indeed and it will take a long time before we know the answer to that question.
Mine operating in this area in the past went as low as 1500m so SGX will have to somewhere between zero and 1500m deep to know what they have.
I have time, do you?