I think they have made a mistake here. For the ore reserves...

I think they have made a mistake here. For the ore reserves table it is stated in US$2095/t and US$21.10oz

I wouldn't use a lower price for LOM than Reserves, that would be lunacy. Plus it's a bit coincidental that they're exactly the same number as reserves. And why would you reference an exchange rate if it was irrelevant?

In the same table:
LOM Pb recovered = 500.2 kt
LOM Lead Revenue = A$M 1422.3

However 500.2 * 2095 = $1,047,919

/ 0.7 = $1,497,027 Still doesn't add up but it's closer to the mark.

I suspect that's meant to be US$/t in the Key LOM Metrics table.