Feb 19: Norsk Hydro - analysis

February 19 2010: Richard Milne, European business correspondent and William MacNamara, mining correspondent, analyse this week's View From the Top interview with Svein Richard Brandtzaeg, the chief executive of Norsk Hydro. They ask whether an over-supply of aluminium could be a new bubble in the making, and what the future holds for the industry's players.