Along with moving HQ to T.O., there was this article.  Two points seem consistent with the ROF challenges.

Lack of mining discoveries? Look to lessons from oil and gas as a way out | Kitco News

"The current residual search space for new mining districts is getting smaller," said Tyler during her talk. "And future districts lie in areas with high country risk or is lower jurisdiction risk but under cover."

She notes that mining is further constrained by the need to be responsive to local communities and minimize environmental harm.