Newfield acquired its flagship asset in 2018 from Stellar Diamonds plc and has since invested over US$80m, developing it to the production stage it is at today.
Located in eastern Sierra Leone which is renowned for its high quality diamonds, the development covers two adjacent mining licenses spanning over 134km2 and hosts 11 known kimberlites.
KEY FIGURES
8.3Mct
JORC Resource
1.1Mct
JORC Reserve
at US$222/ct
2.3cpt
Number of carats contained per tonne of ore moved
The Tongo Mine has one of the highest grade Resources in the world though exploration has been minimal. Actual mining grades are exceeding forecasts by an average of 38%.
Detailed Reserve & Resource Tables
INITIAL MINE PLAN
- Includes 3 of 11 known kimberlites so far
- Rapid production ramp up scheduled to recover 1.1 Million Carats within the first 6 years
- Further drilling an devaluation is planned to increase the Resources and Reserves on the Kundu, Lando, Tongo Dyke-1 and Panguma kimberlites
11 KNOWN KIMBERLITES
Included in Mine Plan
- Kundu
- Lando
- Tongo Dyke-1
Included in Resource
- Kundu
- Lando
- Tongo Dyke-1
- Panguma
- Pandebu
Long-Term Pipeline
- Peyima
- Tongo-Johnson
- Seleima
- Tongo Dyke-2
- Tongo Dyke-3
- Tongo Dyke-4
In addition to the extra kimberlites, deeper drilling on the first five is also planned to further develop the Resource.
The Reserve is only declared on the top 120m levels of Kundu and Lando thus far, and drilling has intersected these kimberlites to depths below 400m.
Similar mines have been observed to achieve depths of mining in excess of 600m.
