As far as your first question SurfsUpDoods I really don't know...

As far as your first question SurfsUpDoods I really don't know the answer to that but what exploration companies do when they send samples away for evaluation the results do mean that any gold or whatever the mineral is can be sold, maybe enough for the lab expenses or maybe shared. It wouldn't be out of the question that gold veins would be encountered on the way to the main areas for mining, maybe a combination of that and stockpiles. From tailings I don't think so because recovery from tailings is a different process.
I grow okra for using in curries, my nickname could have been "the coriander kid" because I grow that as well but it was a tad too long chilliecharlie was also a thought. I'll have to look up Gumbo.