wilgar/ crushing plant, page-67

http://www.saimm.co.za/Journal/v109n11p641.pdf

Its a differential examination, but enough info to do some work on instead of guessing or complaining/bellyaching.

"The basis of the plant design is the treatment
of an oxide/secondary sulphide deposit
treating a 4 per cent copper head grade and a
0.05 per cent cobalt head grade at a treatment
rate of 2.5 million tons per annum. This will
provide a feed tonnage of 100 000 tons and
1325 tons per annum of copper and cobalt
respectively."

Not a million miles from CDU.

Have at it. You can dig out capex numbers from Sino/CDU data released by CDU.