Former Llandbradach Colliery workshops range

The former Llandbradach Colliery workshops range is a Grade II listed building consisting of three gabled sections connected end-to-end by short links. The northernmost section is the largest and tallest, dating from the earliest construction phase. It measures 11 by 3 bays and is built of rock-faced, snecked sandstone with coped gables and a corrugated iron roof. The windows are segmental-headed and feature iron-frame glazing with blockwork infill behind. The west side wall includes a wide doorway in the two northernmost bays, and a loading bay is located in the central bay. At the southern end, there are three small basement windows. Additionally, a two-span projection has been added to the northern end.

The middle section is constructed of rubble stone with brick dressings and also has a corrugated metal roof. On the west side, there is a wide doorway at the northern end and an added lean-to. Its east wall features segmental-headed windows with iron-frame glazing across six bays. The southern section is offset to the east side of the middle range and is similarly built of rubble stone with a corrugated metal roof, measuring 8 by 3 bays. It has openings under brick segmental heads and features a raised platform surrounding it. In the east wall, one window has been converted into a doorway. The west wall contains a wide doorway inserted into the two bays at the southern end, while the other windows are blocked. The south gable end also has blocked windows, with the left window cut down to ground level.

Only the northern range was inspected, which features wrought iron roof trusses similar to those found in the engine hall and engineering shops.