(ShareCast News) - BHP Billiton, a Anglo-Australian multinational mining, metals and petroleum company, has announced that the chairman of its Sustainability Committee is stepping down. John Schubert will retire from the board after serving as non-executive director of BHP Limited since June 2000 and director of BHP Limited and BHP Billiton since June 2001.Schubert is to step down as Chairman of the sustainability committee but will remain a member until his retirement.He is being replaced at the helm of the Sustainability Committee by Malcolm Brinded, who has been a non-executive director of BHP Billiton since April 2014, with effect from 22 September 2016.The share price rose 1.16% to 1044.12p at 0859 BST on Wednesday.