| Type: | town |
| Koolyanobbing | |
| State: | wa |
| Lga: | Shire of Yilgarn |
| Local Map: | yes |
| Zoom: | 9 |
| Coordinates: | -30.82°N 119.52°W |
| Postcode: | 6427 |
| Est: | 1965 |
| Elevation: | 343 |
| Stategov: | Central Wheatbelt |
| Fedgov: | O'Connor |
| Dist1: | 424 |
| Dir1: | east |
| Location1: | Perth |
| Dist2: | 54 |
| Dir2: | north north east |
| Location2: | Southern Cross |
Koolyanobbing is located north-northeast of the town of Southern Cross, Western Australia. Iron ore has been mined here since 1948 by a series of companies, with a break between 1983 and 1993. The ore is currently railed to the port at Esperance for export. The current owner and operator of the lease is Mineral Resources Limited.
The place name is of local Aboriginal origin, meaning "place of large rocks."[1]
The first European to visit the area was Charles Cooke Hunt in 1864 who explored the Koolyanobbing range that is situated nearby.
The next European to visit the area, in 1887 and later in 1891, was a gold prospector named Henry Dowd, who thought that the rocks in the area were of no value. He recorded his findings and stored them in a bottle that was buried next to a survey peg and which was found again in 1963 at what is now known as Dowd Hill.[2]
Iron ore was first mined at Koolyanobbing from 1948.[3] It was sent by truck to Southern Cross from where it was shipped by rail to Wundowie, where there was a state-owned blast furnace.[4]
The town was established to service a new iron ore mine in the 1960s at Dowd Hill. The town was gazetted in 1965. The former Eastern Goldfields Railway between Southern Cross and Kalgoorlie was realigned for change to standard gauge, and to service the Koolyanobbing mine.[5]
Dampier Mining Co Ltd, a subsidiary of BHP, mined iron ore between 1967 and 1983. Ore was shipped by rail to Kwinana, near Perth, to supply Australian Iron & Steel's (also a BHP subsidiary) blast furnace. The closure of the Kwinana blast furnace in 1982 resulted in suspension of iron ore mining at Koolyanobbing until 1993. Mining of iron ore was resumed at Koolyanobbing from 1993 by Portman Mining, the operation then being taken over by Cliffs Natural Resources in 2008. In July 2018, Cliffs subsidiary Cliffs Asia Pacific Iron Ore sold the operation to Western Australian company Mineral Resources Limited, and a short break in production occurred until November 2018 as the new owners took control.[6]
WA Salt Supply produces salt at Lake Deborah, to the north, which is railed from Koolyanobbing to Kwinana.[7]
The Koolyanobbing Range supports many endemic, priority and one declared rare flora species.
The Prospector service, which runs each way between East Perth and Kalgoorlie once or twice each day, stops at Koolyanobbing.[8]