1. Lecturer, Dept. of Geological Sciences, Univ. of Canterbury, Christchurch 8140, New Zealand (corresponding author).
2. Professor, Dept. of Geological Sciences and Geological Engineering, Queen’s Univ., Kingston, ON, Canada K7L 3N6.
3. Professor, President, and CEO, Centre for Excellence in Mining Innovation, Laurentian Univ., Sudbury, ON, Canada P2E 2C6.