No one should have been surprised, five years ago, when Mike Henry rose to the top of the Australian mining giant BHP. When it comes to mining, Canadians have some game, and the University of British Columbia alum had built a 30-year career touching every aspect of the industry, from marketing to technology to operations. What might have opened some eyes is how decisively the understated Henry, who’d been at BHP since 2003, moved to change things up. He eliminated BHP’s complicated dual listing on the London and Sydney exchanges, boosting the company’s ability to make acquisitions. He improved operations,…