1. Centre for Ironmaking Materials Research, School of Engineering, Newcastle Institute for Energy and Resources, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
2. School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, Australia
3. CSIRO Energy, 11 Julius Avenue, North Ryde, NSW 2113, Australia
4. Pearson Coal Petrography, 1-740 Discovery Street, Victoria, British Columbia, V8T 1H2 Canada