A second worker has died following a deadly incident at Galaxy Resources carbonate plant last year.
The incident originally occurred in November last year, when an abnormal blockage in the company's vertical crystialliser section held up a mass of sodium sulphate liquid, which in turn caused the fibre glass pope work at the U bend section to rupture on impact.
The resulting explosion killed one worker and seriously injured others.
Since the original incident another worker has now passed away due to their injuries.
"Galaxy is saddened to report that a second employee passed away as a result of infection from injuries sustained in the incident," the company stated.
An investigation by China's Suzhou Safety Bureau conducted an investigation in the event, and agreed with the company on the unexpected and abnormal nature of the event, with Galaxy adding that "due to the highly abnormal nature of the incident the risk of this type of incident was not identified by the plant designers in the design documentation or safety studies".
Galaxy is using the plant shutdown time to make modifications to the plant to improve operability and throughput.
Stainless steel replacement materials have been ordered, and the U bend will be repaired by early next month.
Galaxy operates the Mt Cattlin mine near Ravensthorpe.