The following is from Phillip Capital Overview as posted on the company website, I think it pretty much covers the recovery question,
"Since commencing production recovery rates have dropped from 90% in September quarter to 79% in the March quarter. This is compared to a design rate of ~93%. The main issue has been the high proportion of oversize material.
With the Boundary ore currently the main feedstock the rate of oversize material has increased to ~50%, additionally the silver grade in the oversize material is up to 2.5x the grade in the finer sized ore. This means that a high proportion of the silver that is being mined is being sent to the oversize stockpile. Recent estimates put the silver in the stockpile at ~400,000oz. By installing a ball mill the oversize material will be able to be processed. The company believes that this should lead to an increase in production near nameplate design." http://ccrlimited.com.au/wp-content/uploads/2013/06/Phillip-Capital_CCU_150513.pdf
CCU Price at posting:
8.3¢ Sentiment: Buy Disclosure: Held