They are not saying that nothing's there(at KZ5).They are saying...

They are not saying that nothing's there(at KZ5).They are saying that their are traces of zinc,copper,gold etc over a long strike at shallow depth and the conditions are right for a large control resourse,perhaps deeper down.I suppose its like dropping a rock in a dish of water,the splash goes everywhere but most of it stays in the dish.I'm not a geo so if someone like Tastarga reads this maybe they could give a better explanation.