One Alcoa worker remains in hospital recovering from chemical burns after a valve failure at the company's Pinjarra refinery on Tuesday, December 14.
At around 5.20pm, the valve failure occurred at Alcoa's Pinjarra alumina refinery, which resulted in three employees being exposed to process material.
An Alcoa spokeswoman told the Mail the three employees were first treated for their burns at the refinery before two were taken to Fiona Stanley Hospital for further care.
"One of the employees is no longer in hospital," the spokeswoman said.
"The area in question has been isolated and a clean-up of the material has commenced."
The spokeswoman added that an investigation of the incident was underway and that the Department of Mines, Industry Regulation and Safety (DMIRS) had been notified.
DMIRS Director of Mines Safety Andrew Chaplyn confirmed he had been made aware of the valve failure.
"DMIRS was notified of an incident at Alcoa's Pinjarra Alumina Refinery on December 14, 2021," Mr Chaplyn said.
"The department is conducting an investigation into the cause of the incident."
