Healey New Mill Including Attached Chimney

Healey New Mill, including the attached chimney, is a 19th-century scribbling and fulling mill that has been converted into industrial units. It was built between 1826 and 1827 for Benjamin Hallas, a clothier from Ossett. The mill features coursed squared rubble on the north and east elevations, with brick on the south and west elevations, and is topped with stone slate roofs. The structure stands three storeys high with an attic and has an 8-bay main building oriented north-south. To the south, there is a single-bay engine house, and further south, an additional two bays that are narrower. An extra three-bay unit is located at the south end of the main building, to which the chimney is attached.

The east side of the mill has 11 bays, with three wide ground-floor openings—one of which is blocked and another partially blocked. The windows are 2-light flat-faced stone mullions with 4-pane sashes and 18-pane fixed lights, some of which have been altered to create doorways. The north gable features four bays of similar 2-light windows, but the third bay has been modified to include loading doors with a hoist above. A single 4-light window is positioned at the apex of the gable. The west elevation and the addition have similar windows, although much of it is obscured by later buildings. The chimney is square at the base and tapers into a brick upper section. There is a later addition at the south end.

Inside, the engine house was originally designed for a 33-horsepower steam engine and is now floored. The building is constructed in a "fireproof" manner, featuring cast-iron columns, beams, and joists, along with stone flag floors. The columns have moulded caps and bases and support the junctions of the beams, which are of inverted T-section with a swollen bottom section, cambered, and equipped with cast sockets for T joists. The second floor is open to the roof, showcasing large queen-post trusses.

Benjamin Hallas went bankrupt in 1830, and from 1836 until around 1880, the mill was owned by the Healey New Mill Company, a cooperative of 29 Ossett clothiers engaged in spinning, carding, scribbling, and fulling. After 1881, the mill was repurposed for the recovered wool industry, mungo manufacture, and later for shoddy manufacture.