Is the 65/67% your referring to about the head grade?
This is from PDF page 57 of 163 in the linked report in the spreadsheet. Not sure if there is a more up to date announcement, if there is please reference it and I will update my spreadsheet (or you are welcome to do it, it is open source all I ask is that information is referenced).
Obviously where it is lacking (particularly for AVZ) is the exclusion of Tin which is becoming quite a sweet credit, particularly at todays tin prices. I will add in future unless someone has already done the work and can incorporate into the sheet.
AVZ Price at posting:
19.5¢ Sentiment: Buy Disclosure: Held