About Us


Mount Thorley Warkworth (MTW) coal complex is located approximately 12 kilometres south west of Singleton, in the Upper Hunter Valley of New South Wales (NSW).

Operating 24 hours a day, MTW is an integrated operation consisting of the open cut coal mining operations of Mount Thorley Operations and Warkworth Mine.  Other mining related infrastructure includes coal handling and processing and coal transport facilities.

Since coal extraction began in 1981, MTW has been a major contributor to Australia’s coal export industry providing coal resource to the international coal market. On 1 September 2017, Yancoal Australia Limited (Yancoal) acquired both the Mount Thorley and Warkworth operations.

MTW is operated by Coal & Allied (NSW) Pty Ltd (a wholly owned subsidiary of Yancoal Australia Ltd) on behalf of the MTW Joint Venture which includes the following partners:


Mount Thorley:

  • Yancoal Australia Ltd (80 per cent); and
  • POSCO Australia Pty Ltd (20 per cent).



  • CNA Warkworth Australasia Pty Ltd (55.72 per cent);
  • CNA Resources Ltd (28.75 per cent);
  • Mitsubishi Development Pty Ltd (28.9 per cent);
  • Nippon Steel Australia Pty Ltd (9.53 per cent); and
  • Mitsubishi Materials (Australia) Pty Ltd (6 per cent).

Mining operations at MTW are approved until 15 February 2037, and are carried out in accordance with Development Consents SSD-6465 (Mount Thorley) and SSD-6464 (Warkworth) as modified.