Name of the Project
Cullinan C-Cut Phase 1 expansion programme.

Location
Gauteng, South Africa.

Project Owner/s
Petra Diamonds (74%), Kago Diamonds (14%) and the Itumeleng Petra Diamonds Employee Share Trust (12%).

Project Description
The Cullinan diamond mine is renowned as a source of large, high-quality gem diamonds, including Type II stones, and is the world’s most important source of very rare blue diamonds.

The C-Cut Phase 1 project plans to capitalise on the mine’s resource base.

Production from the C-Cut cave has been largely concentrated in the south-western area, which covers about 25% of the C-Cut footprint and has produced 75% of the ore to date.

Cullinan’s C-Cut and the CC1 East –  a new sublevel cave on the eastern side of the mine – contribute more than 70% of the mine’s carats.

Cullinan’s indicated resource of 234-million tonnes, containing 138-million carats, could allow for a considerable extension to the mine life.

Capital Expenditure
Not stated.

Planned Start /End Date
Steady state production from C-Cut Phase 1 and CC1E is expected to be reached in the 2020 financial year. This was according to the guidance provided by Petra before production guidance was suspended in March 2020, following the scaling down of operations, owing to the outbreak of Covid-19.

Latest Developments
In its interims in February 2020, Petra reported that draw-bell installation had been completed at the end of January 2020, with a total of 107 draw-bells.

Petra indicated that cave maturity would follow the draw-bell opening sequence, with draw-bells requiring about 12 months to reach maturity. This was according to the guidance provided by Petra before production guidance was suspended in March 2020, following the scaling down of operations owing to the outbreak of Covid-19.

Key Contracts and Suppliers
MDM Engineering, the South African division of Amec Foster Wheeler (Cullinan plant contract) and Murray & Roberts (Cullinan shaft contract).

Contact Details for Project Information
Petra Diamonds, email investorrelations@petradiamonds.com.