Investor Presentaiton
KEY HIGHLIGHTS FROM WEIR INTERNATIONAL'S MAY 31, 2023 R
UPDATE TO ITS MAY 2, 2023 TECHNICAL REPORT SUMMARY
RAMACO
RESOURCES
We believe Ramaco's Brook Mine has 3 distinct advantages:
1
2
The majority of its REES are found in clay, which are generally much less
expensive and more easily processed than REES found in hard rock.
The deposit has a meaningful percentage of both heavy magnetic REES Dy
and Tb, and light magnetic REES Nd and Pr, which is important for strategic
national defense applications.
<50
Brook Mine Estimated TREO Concentration & Distribution (%)
TREO Concentration
(ppm)
Estimated Distribution (%TREO)
Clay/Silt
Coal
Other
Total
0.00
0.03
0.00
0.03
50-99
0.02
0.15
0.03
0.20
100-149
0.06
0.24
0.02
0.33
3
The Brook Mine is already permitted and could commence mining later
in 2023.
150-199
1.05
1.19
0.67
2.91
200-249
14.13
0.98
6.69
21.80
250-299
44.76
5.15
20.13
70.04
Estimated TREO Grade Distribution
300+
Total
3.00
0.52
1.17
4.69
63.02
8.27
28.71
% of Tonnage
80%
70%
60%
50%
40%
30%
70.0%
20%
10%
4.7%
0%
300+
250-299
Brook Mine In-Place REO Tons
Total
Primary Magnetics
Secondary Magnetics
Range
21.8%
Tons
('000)
Grade
(ppm)
Tons
Grade
('000)
(ppm)
Tons
('000)
Grade
(ppm)
2.9%
0.3%
0.2%
0.0%
Low
694
253
162
59
45
16
200-249
150-199
100-149
50-99
<50
High
867
316
202
74
56
20
Approximate Grade (TREO ppm)
Source: Weir International, Inc.
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