OK let us go through Sorby Hills....
It has been passed around, AGIP, MIM, various others..
It is LEAD...very close to surface..OXIDE ....TOXIC
Exceptionally high rainfall area
Black Soil
Zero Discharge Water Site
Like most shallow deposits, if it was that goo it would have been mined 40 years ago, when it was dicovered
need I say more?
pro bono publico