Bauxite from Sierra Leone
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Sierra Mineral Holdings 1 Limited,
52 Wellington St., Freetown Sierra Leone

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Table 1 – Reportable Mineral Resource of Gondama Bauxite as of January 1, 2018

[A] Gondama Resources
COG: AL2O3>45.0, SiO2< 5.5
NoDepositMillion TonneGrade %
AL2S03SiO2Fe2O3
Gondama. Measured Ore Resources
1Konta2.2548.023.5619.18
2Jenega4.7547.323.3620.09
3S-series4.9947.783.0420.14
4Wunde4.9447.923.3719.53
5Gbonge10.6748.853.5117.48
Sub-total Measured Resources27.60
Gondama. Indicated Ore Resources
1Gondama2.0047.413.3223.26
2Konta4.1547.464.0622.06
3Jenega1.9047.743.7921.10
4Gbonge5.1649.494.0420.23
Sub-total Indicated Resources13.21
Total Resources Gondama40.81

 

Table 2 – Reportable Mineral Resource of Mokanji (Washed) Bauxite as of January 1, 2018

[B] Mokanji Resources (Washed)
COG: AL2O3>45.0, SiO2< 5.5
NoDepositMillion TonneGrade %
AL2S03SiO2Fe2O3
Mokanji. Measured and Indicated Ore Resources
1MSW24.1547.472.9420.67
2MSW31.4647.313.3720.45
3MS50.3847.473.3919.50

Sub-total Measured5.9947.443.0820.55
Mokanji. Inferred Ore Resources
1MCW72.6547.923.0119.42
2MN143.2346.962.7522.39
3MN12-130.7652.293.5210.94
4MC110.0849.134.3716.98
5MS10.1151.643.6412.72
Sub-total Inferred6.8348.093.0019.45
Total Resources Mokanji12.82

 

Table 3 – Reportable Mineral Resource of Un-washed Mokanji Bauxite as of January 1, 2018

[D] Mokanji Resources (Un-washed)
COG: AL2O3>40.0, SiO2< 9.0
NoDepositMillion TonneGrade %
AL2S03SiO2Fe2O3
Mokanji. Measured and Indicated Ore Resources
1MSW24.2141.897.1324.38
2MSW30.9441.806.0225.11
3MS50.0148.117.9115.26
Sub-total Measured and Indic.5.1641.896.9824.49
Mokanji, Inferred Ore Resources
1MCW72.8542.015.9125.98
2MN12-130.6751.757.7410.74
3MN143.0841.697.3624.89
4MC110.0452.988.036.70
5MS10.0752.788.328.04
Sub-total Mokanji6.7143.056.8624.76
Total Resources Mokanji11.87

 

Table 4 – Reportable Mineral Resource of Mokanji Tailings as of January 1, 2018

[C] Mokanji Tailings Resources
COG: AL2O3>47.0, SiO2< 8.0
NoDepositMillion TonneGrade %
AL2S03SiO2Fe2O3
Mokanji, Mabela. Measured Ore Resources
1TSF10.3249.927.3611.85
2TSF20.0950.086.988.82
Total Tailings Resources0.4149.967.2811.35

 

 

Product And Sales

ParameterGuaranteed value Typical value
Total Al2O3 Min 49% 50%
Total SiO2 Max 4.0% 3.5%
Moisture content Max 12% 11%
Fe2O3 16-22% 17%
Lump size <100mm <100mm
*Above chemical content is indicative and not binding for the producer or potential supplier at the moment of offering. In the eventuality of trading a contract the producer or supplier reserves his right to review the chemical content that will actually inserted into a contract.

 

ParameterGuaranteed value Typical value
Total Al2O3 Min 44% 45%
Total SiO2 Max 3.5% 3.0%
Moisture content Max 10% 9%
Fe2O3 18-24% 20%
Lump size <100mm <100mm
*Above chemical content is indicative and not binding for the producer or potential supplier at the moment of offering. In the eventuality of trading a contract the producer or supplier reserves his right to review the chemical content that will actually inserted into a contract.

 

ParameterGuaranteed value Typical value
Total Al2O3 Min 47% 48%
Total SiO2 Max 8.0% 7.0%
Moisture content Max 10% 9%
Fe2O3 10-14% 12%
Lump size <10mm <8mm
*Above chemical content is indicative and not binding for the producer or potential supplier at the moment of offering. In the eventuality of trading a contract the producer or supplier reserves his right to review the chemical content that will actually inserted into a contract.

 

ParameterGuaranteed value Typical value
Total Al2O3 Min 50% 52%
Total SiO2 Max 8.0% 6%
Moisture content Max 11% 9%
Fe2O3 7% 16%
Lump size <100mm 80mm
*Above chemical content is indicative and not binding for the producer or potential supplier at the moment of offering. In the eventuality of trading a contract the producer or supplier reserves his right to review the chemical content that will actually inserted into a contract.

 

Production

Year Mine Production Washed Bauxite Production Dry Beneficiated Bauxite Export Volume
2013 1.30.60.6
2014 1.91.21.1
2015 2.81.31.3
2016 2.71.41.5
20173.41.70.21.7
20183.11.70.41.96
20193.41.70.41.8
20202.81.401.3
*Unit = million tonne