Chatterley Whitfield: electrical and mechanical fitters' shop (15)

This building is a former electrical and mechanical fitters' shop built around 1935 as part of the Chatterley Whitfield complex. It was later altered in the later 20th century to serve as a mining-car repair shop.

The building is steel framed with single-skin infill panels of brick, with the steel framework visible externally as a rectangular grid pattern. The west gable end has been clad with profiled metal sheeting. The steel truss roof is clad with asbestos cement sheeting, incorporating strip patent glazing roof lights, and has ridge ventilation cowls.

The building consists of three linked parallel ranges running roughly west-east, with the south range extending only partially along the length of the others. Each range is a single bay wide.

The north elevation, with seventeen bays, has metal-framed windows at two levels in the lower part of the wall, although some windows have been bricked up. The upper part of the elevation has no openings. There is a large entrance with double doors at the right-hand (west) end, and two smaller doorways towards the centre and east end. The east gabled elevation has a similar pattern of windows, with large sliding doors in the central and left-hand bays; the latter provides rail access. The rear (south) elevation also has the same arrangement of window openings, with a wide entrance towards the western end. A similar opening with sliding doors is present in the west gable end of the south range. While the west elevation is clad in corrugated sheeting, the original window openings remain visible. Various steel access ladders, walkways, handrails, pipework, and a vertical flue stack are fixed to the exterior.

Inside, the outer ranges have overhead travelling crane gantries and supporting stanchions, and narrow and standard gauge rails are set into the floor throughout much of the building. Several internal structures, primarily of blockwork construction, have been added. The building still retains some original machinery, including a diesel generator, a saw bench, a gantry for a chain hoist, and other plant equipment.