Ann: Exceptional Vanadium Grades Confirmed at Koitelainen Vosa, page-217

Took a look at the Arijoki historical hole ( the 178 metre mineralized intersection) as reported by PUR on 27 August 2018 where the mass recoveries  for concentrate  at one metre intervals  are shown in the Appendix in the announcement.  Quickie  calculation  gives an average mass recovery for the concentrate across the 178 metres of about 9%.   Not sure if this is good or not  in absolute terms, but is an improvement on the Koit  mass recovery which @dunny29  calculates  to be a bit under 4%  on average.