According to the geology excerpt from the Eloff MWP (Exxaro Coal Central, 2016), the region consists of the following pre-Karoo lithologies, i.e. granite basement rocks of Archean age, quartzite of the Witwatersrand Supergroup, lava of the Ventersdorp Supergroup, dolomite (Malmani Subgroup), chert, quartzite and shale from the Pretoria Group (Transvaal Supergroup). These are overlain in places by the Karoo Supergroup which consists of diamictite (tillite) of the Dwyka Group followed by sandstone, shale, mudstone and coal of the Vryheid Formation.

Local geology of the project area, indicating that the site is underlain by lithologies of the Vryheid Formation (Ecca Group), localized dolerite intrusions and younger alluvium. The Vryheid Formation consists of beds of soft, dark grey sandy shale, which alternates with thick beds of yellow to white cross-bedded sandstone and grit with a few coal seams.

Mining method - Truck and shovel operation.

The Wolwenfontein pit officially reached the end of its resource life with last ROM coal mined in January 2021.

The extension of the Kangala complex is the development of the Eloff mining lease, which runs contiguously to the existing Kangala lease. The extension into Eloff is a low capex development due to the ability for Eloff to utilise the existing Kangala infrastructure.

The processing plant was developed as a dual circuit processing facility consisting of a 350tph crushing and screening circuit plus a 320tph DMS washing plant. Each circuit can be operated individually or simultaneously.