Tembang Project (100%)
Tembang is Sumatra’s flagship gold project and is on-track for production during 2013. Tembang has a proved and probable JORC Reserve of 5.5 million tonnes ore at 2.3 g/t gold and 31.4 g/t silver for a total of 513,000 ounces gold equivalent[1].
Further upside remains through an additional 73,000 ounces of gold and 890,000 ounces of silver of Peripheral Sheeted Vein (‘PSV’) Indicated Resources, which were excluded from the Ore Reserve.
Tembang is located in the Bengkulu district in central Sumatra and covers an area of around 850 km2.
Sumatra is advancing a two-stage production plan at Tembang. Stage 1 is a high-grade, low-cost operation, which constitutes around 18% of Tembang’s total resource. Stage 1 has an anticipated five year mine life with 400,000 tpa production rate. Stage 2 will be processed following the conclusion of Stage 1.
Situated on a brownfield site, Tembang was in production for four years until 2000, when the mine closed due to the low gold price of ~US$250/Oz, a fraction of today’s escalating gold price. It is a low risk project due to the many technical advantages created as a result of it previously being mined.
Tembang is a district with a collection of significant prospects.

Figure 1: Stage pits Belinau and Asmar (highlighted in red)
[1] Gold Equivalent reporting
Gold Equivalent = gold assay + (silver assay / 50) where the number 50 represents the ratio where 50 g/t Ag = 1 g/t Au. This ratio was calculated from the average of the 12 months of Financial Year 2011 from July 2010 to June 2011 taken from published World Bank Commodity Price Data and rounded up from 47 to 50. Click here for World Bank Link The metal prices thus used in the calculation are the average gold price of US$1,500 per ounce and average silver price of US$30 per ounce. Metal recoveries assumptions are 90% for gold and 80% recovery for silver for Belinau.
Table 1: Tembang Project April 2012 Ore Reserve Statement Summary
| Deposit |
Reserve |
Tonnes |
Grade |
Contained Gold |
Grade Ag |
Contained Silver |
|---|---|---|---|---|---|---|
| Asmar | Proved Probable |
650 1,230 |
1.7 1.3 |
35,000 49,000 |
24.0 20.5 |
498,000 808,000 |
| Berenai | Proved Probable |
910 80 |
2.0 2.1 |
60,000 67,000 |
40.8 23.6 |
1,195,000 740,000 |
| Buluh | Proved Probable |
560 400 |
2.5 2.0 |
45,000 26,000 |
40.9 29.0 |
735,000 374,000 |
| Aidit | Proved Probable |
- 20 |
- 3.1 |
- 2,000 |
- 44.6 |
- 30,000 |
| Bujang | Proved Probable |
140 50 |
4.2 2.3 |
19,000 4,000 |
52.1 26.0 |
238,000 40,000 |
| Belinau Open Pit | Proved Probable |
90 60 |
5.5 3.4 |
16,000 6,000 |
68.4 53.2 |
196,000 97,000 |
| Belinau Underground | Proved Probable |
50 360 |
8.7 5.0 |
15,000 59,000 |
74.1 39.3 |
130,000 458,000 |
| Total | Proved Probable Total |
2,400 3,090 5,490 |
2.5 2.1 2.3 |
190,000 213,000 403,000 |
38.7 25.6 31.4 |
2,991,000 2,547,000 5,539,000 |


