Mr McKeen retired as of January, 2018, and has over 35 years of legal experience acting for Canadian public companies with an international focus, primarily in the natural resources sector. His practice included all types of corporate equity and debt financings, mergers and acquisitions and mining agreements and transactions. A number of his clients progressed from private start-up companies to publicly-listed emerging companies with established businesses trading on the Toronto Stock Exchange and U.S. and European stock exchanges. He also gained significant experience in the complex issues that cross-border transactions create. The broad geographic scope in which his mining clients operated included 14 countries on five continents.

A number of his resource clients successfully developed mines to production, and significant exposure to project debt and equity financing and related mine development issues was a recent focus area, along with mergers and acquisitions. Other focus areas include corporate governance and corporate disclosure.