PolyMet Mining Corp. announced the appointment of Glencore executive John Burton to the board of directors. Mr. Burton is the company secretary of Glencore and leads a team that focuses on excellence in Glencore's governance arrangements across a wide range of subsidiaries and joint ventures globally, and advises Glencore's businesses on acquisitions, divestments and equity investments.

His is one of three Glencore seats on the board, filling the seat recently vacated by Roberto Huby.