Hymers, Lesley Anne, Bill Steer, and Janice Williams. “The Teachers’ Mining Tour in Ontario - A Professional Development Program for Educators”. Geoscience Canada 42, no. 4 (December 7, 2015): 487–491. Accessed May 18, 2024. https://journals.lib.unb.ca/index.php/GC/article/view/20326.