If you read the whole press release, you would have known it...

If you read the whole press release, you would have known it outcrop at the surface for more than 2km.

Now, its true the grades are not crash hot when it outcrop at surface, due to weathering and leaching. But as you get lower, you get higher grades, and it starts around 40 metres.

Furthermore, there are multiple intrusion laying one on top of the other - such as Leia deposit laying above Luke deposit.

When you have multiple deposits within close proximity to each other, it saves on costs.

Might be worth a read of press releases since last year.