Rare Element Resources
Bear Lodge Project
Canadian NI 43-101 Technical Report
October 9
th
, 2014
10135-200-46 - Rev. 0
14-33
Search-ellipse parameters for all data are summarized in
Table 14.17
, and estimation
parameters are summarized in Table 14.18 through Table 14.21. Generic search
ellipses are used for all zones except M1, for which specific search ellipse parameters
are defined. Search ellipses use the CAE Studio 3 search ellipse expansion option,
which increases the search radius until the desired minimum number of samples are
selected. A maximum of one composite was used for estimation from any given drill
hole.
Grade estimation parameters are optimized for each element/zone/OreZONE
combination and, in particular, the power is optimized to provide the desired
smoothing factor for the block variance.
Table 14.17 - Search Parameters for IDP Estimation of Grades
Parameter
Domain/OreZONE
Ave LG Ave HG M1 LG M1 HG
Rotation around Z-axis (degrees)
0
45
30
15
Search Radius
X'
420
390
410
330
Y'
220
240
220
280
Z'
30
15
20
15
Number Composites - Search Volume 1 Min
6
6
6
6
Max
9
9
9
9
Search Pass 2 Expansion Factor
1.5
1.5
1.5
1.5
Number Composites - Search Pass 2
Min
6
6
6
6
Max
9
9
9
9
Search Pass 3 Expansion Factor
3
3
3
3
Number Composites - Search Pass 3
Min
1
1
1
1
Max
9
9
9
9
(A.Noble, 2014)
