Does this forecast cost of 8g/t refer to toll milling or on-site...

Does this forecast cost of 8g/t refer to toll milling or on-site milling?

I appreciate that the head grade could be 12g/t or higher, but 8g/t equates to A$300/t at todays prices. The cost seems high. At a head grade of 12g/t, 66% of MCO's revenue will be spent on costs. And this does not include the capital and infrastructure costs.

Is this right?

Maybe the costs of 8g/t for on site milling will be less. And maybe the head grade will be higher than 12 g/t. But we don't know this yet do we?