Geoscience Reference
In-Depth Information
Fig. 13.8
Blast holes, color- and
shape coded by destination, and
grade control panels based on
the BEI method. Same area as
Fig.
13.7
Fig. 13.9
Comparison of grade
control panels according to
the ID
3
used by the mine and
the BEI methods, same area as
Figs.
13.7
and
13.8
. Note the
sometimes very different selec-
tion panels
two years production from the open pit. The reference model
is a single realization of a Sequential Gaussian simulation
for all variables involved, and adjusted to production data.
The same areas were re-modeled based on the available blast
hole database, and selection panels for each destination re-
drawn according to the results of each method tested. The
study involved development of an appropriate revenue func-
tion, consideration of mining practices and constraints, and
compared alternative methods to the actual grade control
panels developed by the mine using ID
3
.
