What is the present role of the man Claude Mongeau succeeded as President and Chief Executive Officer of Canadian National Railway ?
Claude Mongeau:  He succeeded Hunter Harrison. E. Hunter Harrison: Ewing Hunter Harrison (born November 7, 1944) is a railway executive who served as the CEO of Illinois Central Railroad (IC), Canadian National Railway (CN) and Canadian Pacific Railway (CPR), and now serves as CEO of CSX.
CEO of CSX