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Dear All Subscribers Can you please help? My company The Mineral Corporation is doing quite a
bit of work for various clients on various commodites and the one glaring area
that has struck me is how to deal with assay values which are do not
“fit” i.e they are tooooooo high or tooo ,low. After sorting out
all the problems of sampling error and lab error, you are left with the only
choice, the value is there and theres nothing you can do about it. I spoke to
Francies Petard at a conference in Joburg recently about this sort of thing and
he felt that for short term planning and grade control estimation, leave out
these “anomalies”, but for the long term put them back in. my
trouble is how! I have heard of techniques such as decile analysis, which I
know DATAMine uses, but I don’t like the way it is “black
boxed”. Can you please help
thanks Chris S Ainsworth |
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