The No. 2 furnace of the Koniambo ferro-nickel plant is now returned to operation after it was closed due to a design fault in February 2016. The No. 2 furnace was shut down after it was discovered to share the same design fault premature ageing of the firebricks with the No. 1 furnace.
In December 2014, a major hot metal leak happened at the No. 1 furnace, which was later rebuilt and returned to production a year later.