Ann: Soil Grades up to 74,997 ppm U3O8 (7.5%) at Portland Creek, page-491

I am not getting into the war of words, but rock chip samples for gold or copper are not even in a similar category and I understand what he is saying about that. Not real relevant in this case.
The high soil content can't have washed in, it would have broken down over millions of years but the high grades would have diminished, the radon gas results show a few areas of high readings. Just gonna have to wait for this to unfold. Has to have leeched out from in the ground not really any other reasonable logic for it. Some pictures of the soil samples would be handy to get a feel for the type of soil and what it is made up of, clay, sand, rock.