Sembehun Project Feasibility and Market Dynamics
Area 1 - Recent Operating Performance
Sierra Rutile Limited
Following significant operational improvements in the second half of 2021 and the reset of the fiscal regime for Area 1 operations, Sierra Rutile has
performed strongly since June 2021.
Recent Operational Improvements
•
Poor operational performance and disruptions from COVID-19 in 2020 and H1
2021.
Sierra Rutile identified and implemented a number of initiatives targeting cost
reductions and productivity improvements from H2 2021, including:
mine plan optimisation;
- improved mining, stockpile management, processing and tailings
management practices;
-
Ore Processed & Rutile Grade
1.7%
1.6%
1.5%
1.4%
1.3%
2.7
2.6
2.6
2.3
2.2
1Q21
2Q21
3Q21
4Q21
1Q22
Ore Processed (Mt)
Rutile Grade (%)
improved maintenance practices targeting increased run time and plant
availability; and
HMC Produced & WCP Run Time¹
•
reduced operating costs driven by optimised staff rosters, reduced operating
footprint and third party contract terms.
Favourable fiscal regime adjustments for Area 1 were ratified by the Parliament
of Sierra Leone in December 2021.
Resulting operational improvements support the targeted Mine Life Extension
Program for Area 1 operations.
Note: (1) The average run time of 4 wet concentrator plants (DM1, DM4, DM2-1 and DM2-2).
77%
73%
72%
66%
63%
98
86
77
72
65
1Q21
2Q21
HMC Produced (kt)
3Q21
4Q21
1Q22
Average Run Time (%)
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