A new long-term deal supplying power to the Tiwai Point aluminium smelter boosted the leading energy stocks and drove the New Zealand sharemarket to one of.
Rio Tinto announces that New Zealand Aluminium Smelters - previously a joint venture between Rio Tinto and the Sumitomo Group - has signed 20-year power agreements with Meridian Energy, Contact.
UK-Australian mining firm Rio Tinto has signed an agreement to acquire Japanese firm Sumitomo Chemical's stake in New Zealand Aluminium Smelters (NZAS) to own 100pc of NZAS.