Glencore appoints ex-BP boss Tony Hayward as permanent chairman
Hayward, who is now chief executive of Genel Energy , has been serving as interim chairman at Glencore Xstrata since last May.
He was the chief executive of BP (BP..LO)from 2007 to 2010 and left in the aftermath of the Deepwater Horizon oil spill.
(Reporting by Silvia Antonioli; Editing by Greg Mahlich)