The top brass of BHP Billiton, the world’s biggest mining company, are seen arriving ahead of last month’s annual general meeting in London, which took place at a time of falling iron-ore prices but rising production. BHP Billiton’s own iron-ore output rose 17% in the three months to September 30. The iron-ore producer, along with Rio Tinto and Vale, are seen to be providing a glut of product that is resulting in lower prices. Front right is BHP Billiton chairperson Jac Nasser, with BHP Billiton CEO Andrew Mackenzie directly behind him.