KEY FACTS

Nampala Gold Mne

Location: Sikasso Region, Southern Mali

Mine Type: Open pit

Status: Producing (commenced 2017) 

Production: 45-50koz per annum

Mineral Resources: 260koz

Ore Reserves: 121koz

Employees: 324

Employment Type: Residential & FIFO

Introduction

Nampala is an open-pit mine in Mali which has been in production since 2017 and has produced an average of 45-50koz per annum of gold since then. It uses conventional surface mining techniques and recovers gold via a 3Mtpa carbon‐in‐leach (CIL) plus gravity processing plant.

Geology

The Property is located within the Kadiana-Madinana Domain of the Birimian Supergroup in southern Mali, located within the broader Baoulé-Mossi Domain, a significant greenstone belt of West Africa renowned for its gold mineralisation.

The Birimian Supergroup is a significant component of the West African Craton, formed around 2.2 Ga to 2.0 Ga. It comprises a sequence of intensely deformed and metamorphosed volcanic and sedimentary rocks. The Birimian is typically divided into two parts: a lower volcanic group with basalts and andesites and an upper sedimentary group with greywackes, sandstones, and shales. These turbiditic sedimentary rocks are significant, as they often host significant gold mineralisation.

Nampala has an Indicated Mineral Resource of 244Koz @ 0.94g/t Au and an Inferred Mineral Resource of 17Koz @ 0.95g/t Au. Ore Reserves, which are included in the Indicated Mineral Resource, total 121koz @ 0.93g/t Au.

Mining

Mining at Nampala is conducted using a conventional open-pit method, involving contractor-operated hydraulic excavators for loading and dump trucks for hauling. In areas of transitional lithology and laterites, drilling and blasting are employed, although most of the material is mined through free digging.

The mining sequence at Nampala is primarily influenced by the plant requirements and the tropical climate’s dry and wet seasons.

Processing

Since 2017, Nampala has been in continuous operation, processing primarily oxide material (saprolite). The current processing flowsheet for Nampala employs a design consisting of a scrubber, ball mill circuit, and cyclone classification. Gold recovery is achieved through a combination of gravity concentration followed by a carbon-in-leach (“CIL”) process and Zadra elution.

Since the initial implementation of the flowsheet, enhancements have been made to improve processing efficiency. A mineral sizer was added to manage large ore blocks, ensuring smoother material handling, and a cone crusher was integrated into the grinding circuit to address critical-size particles, optimising overall grinding performance.

The mine has achieved consistent increases in throughput since 2020.                 

Exploration

PDI plans to undertake an extensive 2026 drilling program at Nampala, comprising approximately 650 holes for more than 60,000 metres, including 40,000 metres of RC drilling, 8,000 metres of HQ3 and PQ diamond drilling, and 12,000 metres of air‑core drilling.

Delivered over a 12‑month period, the program is designed to grow the resource base by targeting additional Indicated and Inferred resources while advancing both brownfields and greenfields opportunities across the broader mineralised system.

Drilling will also test the low‑strip, free‑oxide zones and the depth extension of fresh rock sulphide ore, supporting long‑term mine planning and future production potential.