The first railway in Brunei opened in the last decades of the 19th century to connect the Brooketon Coal Mine with the port of Muara, a distance of about 2.5km. Initially a wooden tramroad, the use of steam locomotives suggests that at some time it was converted to a true railway. The mine and its railway were closed by 1924. Traces of both are said to remain, although largely inaccesible owing to the return of heavy natural undergrowth.
In the early 1930s Royal Dutch Shell (now Brunei Shell Petroleum) constructed a 600mm gauge railway connecting its Seria refinery with onshore oilfields. It extended some 19km and according to some reports continued to operate into the early 21st century. A road follows the route of the line between Seria and Badas, but it is not known whether any other relics remain.
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