RE: New info. Perhaps they decided to complete some assessment work on the ground as opposed to letting the claims lapse. Maybe the property is in that ugly zone where the thing isn't lousy enough to let lapse but isn't good enough to spend much more than the bare minimums of time and money on. An occassional pruning of the property portfolio can be a good idea.
Are you sure it is 3km south of Mt Milligan, I think the actual website says it is 9km away.