The Koolan Island mine closed in 1994 after BHP had extracted 68 million tonnes of high-grade haematite ore, averaging 67% iron.
[4] At its peak, Koolan Island had a population of 950 people and had a school, police station, recreation facilities and shops.
It had the world's then-longest golf course hole – an 860 yards par 7 number 6 which doubled as the island's air strip.
[5][6][1] Earlier, in April 2006, the company signed a co-existence agreement with two Aboriginal Australian peoples, the Dambimangari (Dambima/Worrorra-Ngardi) traditional owners of the island.
The agreement aims to ensure that 30% of the 220 person workforce is filled by Indigenous people by the eighth year of operation.
[12] On 23 December 1984, a single-engined Cessna 210 aircraft, which had just taken off from the island en route to Broome, struck power lines and somersaulted.