Kirby retains responsibility for the energy coal business and will oversee group supply and project development services as well as company offices in Brazil, India and Mongolia.

He will be replaced by current chief financial officer Chris Lynch, who in turn will be replaced by Alex Vanselow, currently president of BHP’s aluminium business. Current iron ore president Graeme Hunt will replace Vanselow as aluminium president.

“Bob has had a long and distinguished career at BHP Billiton,” BHP chief Chip Goodyear said.

“He has had leadership roles across many of our businesses and his experience has been integral to our success. During 2006, Bob will assist in the ongoing transformation of Energy Coal, continue to develop several of our functions and regional offices, and will ensure the smooth transition of his responsibilities in Carbon Steel Materials.”

Goodyear said the appointments would broaden the experience of BHP’s top team and facilitate smooth succession planning. All appointments will be effective April 1, 2006.