Name of the Project
4L25 mine dump reclamation project.

Location
Less than 5 km from downtown Johannesburg’s central business district, in Gauteng, in the vicinity of Ergo’s City Deep milling and pumping plant.

Project Owner/s
Ergo Mining, a subsidiary of DRDGOLD.

Project Description
The project entails the reclamation of the 2.7-million-tonne 4L25 mine dump.

With an average grade of 0.308 g/t, the 4L25 dump is estimated to contain an estimated
850 kg of gold.

4L25 slimes will be recovered at up to 300 000 t a month over 10 to 12 months, with supplemental tonnage coming from the 4L2 dump, the reclamation of which is winding down. This will sustain City Deep’s production levels for a further 12 months until the larger 4L3 and 4L4 reclamation sites begin.

4L25 slimes will be reclaimed using a remote-controlled, high-pressure water gun positioned on top of the dump.

Here, it will be combined with 4L2 slimes and then pumped through a 40 km pipeline to Ergo’s metallurgical plant in Brakpan, on the East Rand, for gold recovery.

Besides sustaining City Deep’s production for longer, 4L25’s reclamation forms part of the extensive rehabilitation programme DRDGOLD is undertaking through its “rolling back gold mining’s environmental legacy” initiative.

The partially reclaimed dump will be removed completely to liberate about 37 ha for rehabilitation and sustainable land use.

Further, remnant material from other clean-up sites will be reclaimed and trucked to the 4L25 site, and the newly installed pumping and piping infrastructure will relay this material to the Brakpan plant for processing.

Additional land will be cleared for rehabilitation and sustainable land use from this exercise.

Potential Job Creation
Not stated.

Net Present Value/Internal Rate of Return
Not stated.

Capital Expenditure
The project is estimated at R3.8-million.

Planned Start/End Date
Not stated.

Latest Developments
None stated.

Key Contracts, Suppliers and Consultants
None stated.

Contact Details for Project Information
DRDGOLD, tel +27 11 470 2600.