Yes, I believe that if they find the mother-lode in Yegon Deeps...

Yes, I believe that if they find the mother-lode in Yegon Deeps they could run an adit  (horizontal shaft) into the ore body from China pit after a few years of production. The anomaly looks larger than current China Pit. 

IMO, They are effectively saying we trust the EM results (they cross verify with our known deposits)  and we have something big in Yegon Deeps, once we find it. 

Also worth noting, BWDD021 went to a depth of 365 metres, which is as deep as they can go on that rig. Repositioning rig would allow a deeper exploration. As they went to full depth, I'd suggest they were still very interested in that core at the bottom of the hole. Whether ore or important mineralogy to ascertain location of orebody.