Searching for uranium in Dumfries

I went to A spot below Criffel in Dumfries to look for uranium salts in the rocks. Geologists found the salts at Southwick cliffs in the 1960s. I found a paper about it on the Internet. The Geiger counter reached 3 times the normal background, but it was terribly overgrown and I was not able to locate the original excavations or those of 1990. This is what it looks like: