Climate activists stopped the train a few kilometers from the port as it passed through Sandgate, near the Pacific highway, according to the New Daily website.
About 20 members of the Rising Tide group climbed onto the train and began unloading coal from the loaded wagons.
Another 30 people supported the unloading of coal on the railway line.
During the action of the activists, the train waited for at least 4 hours.
About 50 people were detained.
Thermal and metallurgical coal make up the bulk of the $71 billion worth of goods that pass through Newcastle, the world’s largest coal export port, each year.