Sigma Mooikraal Operations

This article is part of the Global Coal Mine Tracker, a project of Global Energy Monitor.

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Sigma Mooikraal Operations is an operating coal mine in Sasolburg, Free State, South Africa.

Location

Table 1: Project-level location details

Mine Name	Location	Coordinates (WGS 84)
Sigma Mooikraal Operations	Sasolburg, Free State, South Africa	-26.942049, 27.730898 (exact)

The map below shows the exact location of the coal mine:

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Project Details

Table 2: Project status

Status	Status Detail	Opening Year	Closing Year
Operating	–	1954	–

Table 3: Operation details

Note: The asterisk (*) signifies that the value is a GEM estimated figure.

Capacity (Mtpa)	Production (Mtpa)	Year of Production	Mine Type	Mining Method	Mine Size (km2)	Mine Depth (m)	Workforce Size
–	1.2	2023	Underground	Bord and Pillar	–	80*	373*

Table 4: Coal resources and destination

Total Reserves (Mt)	Year of Total Reserves Recorded	Total Resources (Mt)	Coalfield	Coal Type	Coal Grade	Primary Consumer/ Destination
25	2023	159	–	Bituminous	Thermal	Sasol

Table 5: Ownership and parent company

Owner	Parent Company	Headquarters
Sasol Mining Pty Ltd	Sasol Ltd [89.8%]	South Africa

Table 6: Historical production (unit: million tonnes per annum)

ROM or Saleable	2017	2018	2019	2020	2021	2022	2023
ROM	1	1	1	1	1	1	1

Note: The above section was automatically generated and is based on data from the Global Coal Mine Tracker April 2024 release and the September supplement.

Background

Sigma Mooikraal Coal Mine is an underground mine owned and operated by Sasol in Sasolburg, Free State, South Africa. Sasol's original opencast and underground Sigma Colliery began production in 1954.

However, in 2005, the Sigma Mooikraal mine was brought online to provide 20 million tonnes per year (Mtpa) of coal to Sasol's utility plants in Sasolburg. It was meant to replace the depleted Mohlolo underground operation as well as the Wonderwater opencast operation at the Sigma mine site, which were experiencing final closure and rehabilitation. This new, revamped colliery consists of Sasol Sigma, Mooikraal Colliery, and a three shaft complex.

As of October 2018, the original Sigma mine site area is considered to be defunct, and only the Mooikraal and 3-shaft complexes remain operational.

• Operator: Sasol Mining (Pty) Ltd
• Owner: Sasol
• Location: Sasolburg, Free State Province, South Africa
• Coordinates: -26.942049, 27.730898 (Exact)
• Status: Operating
• Capacity: 1.2 Mtpa (2020)
• Total Resource:
• Mineable Reserves:
• Coal Type: Bituminous (Thermal)
• Mine Type: Underground
• Start Year: 1954 (Sigma), 2005 (Sigma-Mooikraal)
• Source of Financing:

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Additional data

To access additional data, including an interactive map of world coal mines, a downloadable dataset, and summary data, please visit the Global Coal Mine Tracker on the Global Energy Monitor website.