Overview
| Stage | Production |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
- Longhole open stoping
- Paste backfill
|
| Processing |
- Gravity separation
- Agitated tank leaching
- Concentrate leach
- Carbon in pulp (CIP)
- Solvent Extraction & Electrowinning
|
| Mine Life | 2030 |
Tanami is the second largest underground gold mine in Australia.
On October 25, 2019 Board of Directors unanimously approved advancing the Tanami Expansion 2 project into the execution phase. The project is expected to exceed the Company’s required internal rate of return with profitable production and mine life extending beyond 2040.
The expansion includes construction of a 1,460 meter shaft, additional capacity in the processing plant, and supporting infrastructure to enable profitable recovery of ore at depth to 2,140 meters below surface. |
| Latest News | Newmont Goldcorp to Add Profitable Gold Production through Second Expansion at Tanami in Australia October 25, 2019 |
Deposit Type
- Vein / narrow vein
- Sediment-hosted
Summary:
Mining operations are predominantly focused on the Callie and Auron ore bodies in the underground mine at Dead Bullock Soak. Tanami consists of sediment hosted sheeted quartz vein mineralization.
Mining Methods
- Longhole open stoping
- Paste backfill
Summary:
Ore is mined from underground using long hole open stope methodology with paste fill and 40m level spacing.
Tanami, as an underground mining operation, has a fleet of 10 underground loaders and 20 haul trucks, each with a 60-tonne payload.
Processing Technologies
- Gravity separation
- Agitated tank leaching
- Concentrate leach
- Carbon in pulp (CIP)
- Solvent Extraction & Electrowinning
Flow Sheet:
Summary:
The processing plant was originally commissioned in 1986. The processing plant facilities were expanded and upgraded during the third quarter of 2017 and currently consist of a crushing plant, a grinding circuit, gravity carbon in pulp tanks and a conventional tailings disposal facility. First expansion increased mill capacity to 2.6Mt/year.
Reserves at December 31, 2018:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
10,200 kt
|
Gold
|
5.46 g/t
|
1,780 koz
|
|
Probable
|
16,400 kt
|
Gold
|
5.54 g/t
|
2,910 koz
|
|
Proven & Probable
|
26,600 kt
|
Gold
|
5.51 g/t
|
4,690 koz
|
|
Measured
|
400 kt
|
Gold
|
3.15 g/t
|
40 koz
|
|
Indicated
|
8,000 kt
|
Gold
|
3.4 g/t
|
870 koz
|
|
Measured & Indicated
|
8,400 kt
|
Gold
|
3.39 g/t
|
910 koz
|
|
Inferred
|
10,200 kt
|
Gold
|
4.22 g/t
|
1,370 koz
|
Heavy Mobile Equipment as of December 31, 2018:
| HME Type | Size | Quantity |
|
Loader
|
|
10
|
|
Truck (dump)
|
60 t
|
20
|
Aerial view:
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