Ann: Completion Xstrata Review , page-12

Plough,

http://www.albionprocess.com/EN/downloads/TechnicalPapers/Albion%20Process%20Update%20-%20Alta%20%202012%20%20(3).pdf

It's all about the constant temperature - not just heating up the first tank;

The vessel temperature will approach boiling, however cannot reach the boiling point in a gas sparged system. Gas bubbles formed in the reactor will consist of a mixture of oxygen, carbon dioxide, nitrogen and steam. The partial pressure of the water vapour will be lower than the pressure
at which water would boil due to the un-reacted gases present. A steady state equilibrium will be established in the Albion Leach Reactor at a temperature below the boiling point of water at the plant elevation. This is typically 2 – 3 degrees below boiling for a well insulated tank, or lower for only
partially insulated tanks.

What you probably should be more worried about is the refinancing arrangements with Macquarie Bank in February - will the US$1320 hedge also be renegotiated?