2.26m of 1.895%Once upon a time, when I was very young,(I was going to say young and foolish, but that would perpetuate the stereotypical attitude among many that one has to be foolish to work underground) I worked in a nickel mine. There were 5 stopes on the level. 3 of them were mined using cut and fill and were from 10 to 25 feet wide. At the end of the orezone there were 2 stopes mined using shrinkage methods, that were in the 6 foot to 8 foot wide range. I do not remember the exact grades , but the mine average was quite a bit less than 2%. That is why I think these results of MUM are decent.
Of course, before one jumps to the conclusion that these results indicate mineability, one has to consider that the development costs (shaft sinking, vent raises, ore passes and level development) of that mine may have been written off over the wider stopes. (i.e., now that we are down here we can afford to mine this narrow stuff also) And very important is continuity of the ore (both width and grade) so that stopes can be laid out for mining. brumell will hasten to remind me (and I concur!)that we are miles of drilling away from even considering mining.
Still lots of hard riding left on this wild young mustang!