Keevil, 79, Teck`s
Teck did not respond directly to questions about the talks with Barton and Keevil`s possible retirement.
London-based Barton, a Ugandan-born Canadian management consultant who has been managing director of McKinsey since 2009 and is due to step down in June 2018, declined to comment.
McKinsey did not immediately respond to Reuters` request for comment.
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