The line opened in 2009 and was built primarily to carry coal.
The last one before the accident was a train carrying coal.
Lighter cars can carry more coal - and save money.
It carries more coal than any other railway line in China and the world.
From 1928 to 1945 it carried coal during the week and passengers at weekends.
A total of 39 freight cars carrying coal were also washed away.
He had his own small boat and carried coal.
The railways in these parts were built primarily to carry coal.
The line was built to carry coal and iron.
The line primarily carried coal, building stone, glass sand and lumber.
