I would think not in regards to stretching the truth lol ... most of this source of information generally is from external consultants and mine planning professionals ... but most of RVR mined resources are in the indicated category not the more accurate measured category .... to upgrade resources requires further drilling at tighter spacings and therefore further cost ... so basically it's a calculated judgement call and a little riskier. ( it may also be a red flag to analysts )
I think it is accurate to say that the mined grades never lived up to the studies....drilling is really only a guide and not definitive, seam variability, poor mining techniques, blasting over break, poor geo conditions can all lead to ore dilution. A significant factor was that Rvr mined additional lower grade ore outside of the original mine footprint when the zinc prices were strong and at the time it was viable to do so....hence reducing the averages but positive from a $ perspective.....this led to more mined tonnes at a lower grade but lengthened the life of mine.....so the grade issue isn't as bad as it may seem.
In regards to Far West its probably fair to say it's too early to make judgement .... they'll be stoping from the outside ( the edge of the resource and therefore lower grade ) inwards to the centre ( usually higher grade ) of the resource. As an aside this can production rates due to the greater bogging distances initially.
The change to Liontown is due to the larger resource tonnes, the near surface high grade gold and wide intersections of the Queens Lens .... highly suitable for a low cost high volume short development timeframe opencut operation initially....the mining studies and time will tell. Hope this helps.
Wassa.
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