The station was originally fairly large and built adjacent to the Dynevor tinplate works and included station buildings, signal box, freight yard and from 1931 a small railway locomotive shed. The signal box (formerly one of three at the station and dating from 1892) is the only surviving example on the HoW route and since 1986, it has supervised the entire line north of here to using a system of working known as "No Signalman Token Remote" (NSTR). It is also a 'fringe box' for the power box at , which controls the line south from here towards and supervises access to the freight branch to Gwaun-cae-Gurwen (which is worked under 'One Train Working' regulations).