HCH Chart, page-1629

1. I don't see much if any change to upfront capex. It will all be the same infrastructure as already planned just going to be a bigger hole to dig. Reduced capex later as wont have to develop an underground cave mine.

2. 30klm drilling already planned. Most of the drilling around the edges more than likely RC as the pushing out of the pit shell will effect mainly the upper levels of the pit as deep drilling already done for C3 for UG cave shell.

3. Met holes and hydrology already complete not 100% sure what he is talking about. If its met work required to understand blending of grades etc through the ROM before primary crusher this is something done every week when coordinating the drill and blast plans nothing extra.

Anyone think differently? More to add?