GPR has been around for more than a decade. I want to find out what is special about these guys. This is not new to mineral exploration at all. In fact if they weren't using it I'd wonder.
GPR will tell you how much gold and silver is on a mining property, will it? Does it come with a magic wand and a crystal ball? Because it does nothing of the kind.
And it is not "state of the art" for mining. It is very rarely used for mineral exploration, and only in the most ideal of circumstances will it work for mineral exploration. No exploration geologist would use it as their primary tool, especially on the hard rock claims that GNCP supposedly has.