just quoting, page-119

"This increased capacity would allow for the treatment of the lower grade ore and the sustainability of profits."

Really? I doubt very much that it will be profitable at today's prices when it moves to the lower grades after ten years. Profitability is pretty marginal after year 4 or five at today's prices after they've front loaded the grades in the initial years.

Increased capacity requires huge CAPEX, and increased running costs for less copper per tonne processed.