Just because a 'flown' survey indicates magnetic targets doesn't mean there is going to be mineralization of economic importance down there. They also use this type of survey to find all kinds of buried structures.
Next step is going over the target on the grown doing a closer mag survey and then interpreting that. Then drilling to see what's there.
Remember that whole area has similar targets identified by mag survey and a lot that look similar on map turned up nothing much of anything.
Probe has a chance but it's far from a slam dunk. Would be great IF the mineralization that Noront found had offshoots headed towards Probe but that's not proven. Some think any mineralization heads South East but no one at this time knows.