Marcus Randolph to retire from BHP BHP Billiton said Marcus Randolph, a top executive who has been on extended sick leave, will retire next week. Mr Randolph was already on leave from his position as chief executive of BHP's ferrous metals and coal division when Andrew Mackenzie, the mining company's new chief executive, stripped out a layer of senior management and named a new team to help him run the company just weeks ahead of taking up his post earlier this year. Mr Randolph had been promoted from chief organization development officer by Mr Mackenzie's predecessor, Marius Kloppers, just before he became CEO in 2007.