Rare Element Resources
Bear Lodge Project
Canadian NI 43-101 Technical Report
October 9
th
, 2014
10135-200-46 - Rev. 0
13-24
A fourth composite, Composite 4 was also submitted to pilot-scale testing. This was a
high-grade composite, which did not require any beneficiation processes beyond
coarse screening. After scalping out the plus 3” material, only crushing and
screening to produce a -48 mesh product is required. The pilot-scale results are
summarised in Table 13.16.
Table 13.16 - PUG Composites – Pilot Scale Results Summary
(SGS Lakefield, 2014)
13.6.5 Material Handling Testing
Jenike and Johanson (J&J) performed material handling testing at their laboratory in
Canada to determine the flow characteristics of pre-concentrates in storage facilities.
Most of the tests showed that less than 15% pre-concentrate moisture is required for
the material to be stored in silos. At moistures above 15% it will be cemented and fail
to flow. J&J tests are focused on mechanical engineering and construction of storage
bins for mineral concentrates and fine ore.
SGS performed belt filter filtration tests using pre-concentrate pulp and could not
achieve less than 15% moisture in the final filter cake. J&J tested the initial pre-
concentrate cakes (22-25% moisture) from SGS. All samples failed the flow
characteristics tests indicating that if the slurry is filtered using a belt filter, we cannot
store the resulting filter cake in bins. Subsequent filtration tests on PP1-PP3 pre-
Comp Reconciled Feed Grade, % or g/t
SiO2 AI2O3 Fe2O3 TREO1 CREO2
U
Th
Comp 1A
40.3
11.9
13.5
7.22
1.60
105 1,416
Comp 2
28.1
8.13
11.2
5.65
1.24
60
524
Comp 3
39.9
11.8
12.4
2.40
0.71
82
779
Comp 4
30.8
9.06
16.5
17.1
3.67
208 3,026
Comp Reconciled Conc Grade, % or g/t
SiO2 AI2O3 Fe2O3 TREO1 CREO2
U
Th
Comp 1A
36.0
10.8
16.1
8.51
1.88
120 1,644
Comp 2
24.1
6.88
13.0
6.64
1.44
67
606
Comp 3
32.7
9.75
17.1
3.31
0.97
109 1,068
Comp 4
29.6
8.91
16.4
18.2
3.93
218 3,253
Comp Reconciled Conc Recovery, % or g/t
wt
SiO2 AI2O3 Fe2O3 TREO1 CREO2
U
Th
Comp 1A
80.5
72.0
72.7
96.1
94.8
94.5
92.3
93.4
Comp 2
74.3
63.5
62.8
86.4
87.2
86.5
83
86
Comp 3
65.4
53.6
54.3
90.4
90.1
89.4
87.6
89.7
Comp 4
88.1
84.7
86.5
87.5
94.0
91.3
92.1
94.7
1
TREO represents total rare earth oxides and includes Y
2
O
3
2
CREO represents the following rare earth oxides, as specified by RER: Pr
2
O
3
, Nd
2
O
3
, Dy
2
O
3
, Eu
2
O
3
, Tb
2
O
3
and Y
2
O
3
