A freight train carrying iron ore to Esperance Port has derailed, scattering 32 carriages and about 2240 tonnes of the commodity across the track.
The line from Kalgoorlie- Boulder to Esperance remains closed after the train derailed 17km north of Salmon Gums last night.
The Aurizon train was carrying iron ore from Cliffs Natural Resources Koolyanobbing operation, north east of Southern Cross, to Esperance for export, when it came off the Brookfield Rail freight network at about 7pm.
Brookfield said no on was injured in the accident.
A joint investigation has been launched between Aurizon and Brookfield to find the cause of the derailment.