jantimot,
copper recoveries to date have been disclosed, rather just not for the inital bulk trial. I can only assume the company is waiting to complete the significantly larger bulk trial to release these details after they have further refined their model worksheet process to align it with proposed plant design. They have hinted at taking this approach in prior annoucments.
In terms of the T&C of offtake you'll find CDU isn't alone in not providing the minute details for various reasons that aren't necessarily sinister.
However, I agree with your thinking in terms of looking at what isn't being said to measure the real risk you're taking on. Indeed, a few of us would also like to know how the by-product margin for pyrite/co was derived given it has material implications @ $805/t.
I suspect will get a few more pieces of the puzzle from final bulk sample results, updated JORC eq grade and then DFS.
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