Aug 12: BHP foresees flexible pricing

Marius Kloppers, chief executive of BHP Billiton, tells mining reporter William MacNamara that the present system for setting iron ore prices may have had its day. His comments come after Chinese prosecutors arrested four Rio Tinto employees, the latest stage of a crisis sparked by annual price negotiations. Produced by Josh de la Mare and Alistair Gray. Camera: Steve Ager