10 x 100k sales today...very strange

Does anyone have an explanation for the trade action today?
Seems very dodgy to me. Each 100K parcel doesn't seem to show up in the Buy column, and if it does, it just seems to last a short time before it gets snapped up again.

10 separate 100,000 parcels traded today and 2 x 50,000 parcels. And none of them appear to be Broker cross trades.

Who or what is playing games here?
Could it be a pre-cursor to a big jump in the share price as someone in the know is getting set for the initial drilling results in the weeks ahead.

Would like other people's opinions on this?

Disclosure: I have held this stock for over a decade !!