PERTH, AUSTRALIA--May 13, 2014--Researched by Industrial Info Resources Australia (Perth, Australia)--Nyrstar Australia Pty Limited (Port Pirie, South Australia) is awaiting final South Australian government approval for its US$328 million (AUD$350 million) Port Pirie Smelter upgrade project. The state government has told Nyrstar that it would announce the decision no later than May 16.