My interpretation is that there is a large system and, the stratigraphy being equal, the richness or not of the deposits is dependant upon the plumbing. In other words, the deposit is open finding rich beds next to not so rich beds. Nothing to get alarmed by, to the contrary, the size makes for many opportunties. Lets see what the drilling to the south reveals.
I'm studied ore deposit sizes and the average minable grade deposit still in plan view is a mere 1500 feet. Open pit mining is deceptive as the width and length of the pit belies the acutal size of the minable grades and also may include more than one ore body. It'll be interesting how EVG proceeds, whether they drill inside the now established mineralized ground or go for futher extention to the northwest--they are doing so to the southeast in their Humboldt project