[4] The company expected that it would take two years to complete excavation of the decline[5] which is 7.5 kilometres (4.7 mi) long and descends 600 metres (2,000 ft).

They were followed by processing plant, access road and electricity infrastructure from mid-2018 and installation of underground materials handling.

[9] National Jet Express provides fly-in fly-out services between Adelaide, Port Augusta and Carrapateena since October 2018 using an RJ-100 aircraft.

[11] The Program for Environment Protection and Rehabilitation (PEPR) for the mine was approved by the state government on 29 March 2018.

Downer is also a joint venture partner in the engineering, procurement and construction of above ground facilities.