Bulyanhulu

 

Mine profile

Characteristics

A narrow-vein gold mine containing gold, silver and copper mineralisation in sulphides. Mineralisation of Bulyanhulu is associated with steeply-dipping reefs. A number of distinct reefs have been identified including Reef Zero, Reef One and Reef Two.

Life and reserves

Bulyanhulu’s life-of-mine is currently estimated to be more than 25+ years, based on its proven and probable gold reserves of 9.4 million ounces.

Location

The mine is in northwest Tanzania, in the Kahama district of the Shinyanga region, approximately 55 km south of Lake Victoria and 150 km southwest of the city of Mwanza, a regional business and economic hub.

Capacity

The Bulyanhulu process plant has the capacity to process an average of 3,300 tonnes of ore per day, (or c. 1.1 million tonnes per year) and produces both doré and copper/gold concentrate.

Access

Good, with a private airport and local unpaved roads connecting to the main highway close to Kahama.

Climate

The average annual temperatures range from 15°-35°C. Average annual rainfall in the region is 953mm.

The site

A high-grade underground mine with shaft access, which is transitioning to long-hole and drift and fill as its principal mining methods.

2013 Performance

Key mine statistics Year ended 31 December Contribution to total Group ounces (Oz)
2013 2012 % variance 198,286
Underground ore tonnes hoisted (Kt) 872 959 (9%)

Ore milled (Kt) 871 1,012 (14%)
Head grade (g/t) 7.8 8.0 (6%)
Mill recovery (%) 90.9% 90.6% 0.3%
Ounces produced (Oz) 198,286 236,183 (16%)
Ounces sold (Oz) 195,304 235,410 (17%)
AISC per ounce sold (US$/Oz)  1,344  1,245  8% 
Cash cost per ounce sold (US$/Oz) 890 803 11%
Cash cost per tonne milled (US$/t) 200 187 7%
Copper production (Klbs) 4,855 6,102 (20%)
Copper sold (Klbs) 4,508 5,895 (24%)
Breakdown of Captial expenditure
- Sustaining captial (US$'000) 25,193 35,193 (28%)
- Capitalised development (US$'000) 45,428 45,605 (0.5%)
- Expansionary capital (US$'000) 114,912 36,814 212%
  185,533 117,612 58%
- Non-cash reclamation asset adjustments (10,044) (43)
Capital expenditure (US$’000) 175,489 117,569 49%

2014 Priorities

  • Accelerate development and improve access to higher grade stopes
  • Reduce amount of equipment in operation in order to improve productivity
  • Commission CIL expansion to add low-cost production