Who we are


Tahmoor Coking Coal is an underground coal mining operation situated in the Southern Highlands Region of New South Wales. We are located just south of the Tahmoor township and approximately 80km south west of Sydney.

We have been in operation since 1980, and since April 2018 have been owned and operated by SIMEC Mining, a member of the GFG Alliance.

Tahmoor Coking Coal operates in the Bulli coal seam, with the majority of its product being hard coking coal while also producing small amounts of a speciality blend coal.

The coking coal, a key ingredient in the steelmaking process, is used in Australian domestic, European and Asian markets.

We currently have development consent to produce up to 3 million tonnes Run of Mine (ROM) coal per annum and operate 24 hours a day.

We employ about 400 employees and contractors and support many local and regional businesses and services in the Wollondilly Shire area.

Site management and operations

Our approach to site management, operations and key activities is outlined in detail in our Mine Operations Plan.