Weaving was the principal activity here, the larger spinning mills of the Oldham Limited of the late 19th century ware built in towns further south. The Burnley loom was a narrow loom that produced grey cloth suitable for printing. Here we find many such stone-built mills such as the Waterloo Shed north of Trafalgar Street and the Wiseman Street Shed, the Sandygate Shed (c1860), and the brick-built Woodfield Mill (1886). Victoria Mill SD833326 early four-storey spinning mill from the 1850 built on Trafalgar Street for throstle spinning, There was however a small attached weaving shed. Trafalgar mill to the west of Waterloo shed is an example of a combined mill- one that did the spinning and then passed the yarn to its own weaving sheds. This was a four-storey stone built in 1840 as mule spinning mill and later extended with attached weaving sheds. Sprinkler systems became essential in the 1880s and a water tank was added. Clock Tower mill, on the north side of the canal east of Sandygate was another. It was built c. 1840 by George Slater; there were four- and five-storey spinning mills by the canal and a six-storey 5-by-9-bay with a clock tower, the weaving shed was to the east. John Watts (Burnley) Ltd ran the mill from 1890 to the 1980s. Burnley was the home to the Burnley Iron Works SD 836326 a large engineering firm, which made mill engines including the Harle Syke engine displayed in the London Science Museum. Butterworth & Dickinson, Harling and Todd and Pemberton had foundries and built looms here. Globe Iron Works was firstly used by but was taken over in 1870 by Butterfield and Dickinson. The Waterloo Iron works was owned by Onias Pickles, who acquired the business of Thomas Sagar manufacturing plain Burnley looms. In 1887 it was bought by the Pemberton Brothers who continued in manufacturing until 1963. In 1977, the Burnley Industrial Museum Action Committee was formed to work for the preservation of the town's heritage. The Weavers' Triangle Toll House museum was established on 26 July 1980, and opened by Brian Redhead. and is staffed by volunteers the Weavers' Triangle Trust. It was initially housed in 2 rooms of the former canal offices on Manchester Road, but expanded into the adjacent wharfmaster’s house in 1987 and was renamed to the Weavers’ Triangle Visitor Centre.