The depth of the drill holes are modeled based of existing data...

The depth of the drill holes are modeled based of existing data about depth of gold mineralisation (from Battle Mountain Gold Company?).

But this extra $1.15m gives us additional flexibility to:
A) drill deeper as required or advised by on site geologist
B) drill the northern targets
C) advance Kooline for Lead/Silver, Gold, Copper potential

For instance: if the RC drill chips show visible gold at the planned max depth, the geologist can simply tell the driller to continue drilling for another X meters to explore deeper. I guess this is one good thing about RC drilling - some mineralisation can become visually detectable and allows geologists to adapt accordingly.

Nothing is guaranteed until the labs get the numbers back to us but this flexibility certainly improves our chance of success.