See also (Miller 1949, 98) and SMR PRN 01713. Site now wooded valley of the Blackburn Brook. First reference for water power on this site is a lease record for 1794 (Miller 1949.) At this time the site was operating 7 grinding troughs. By 1868 the site (known as Gibraltar Steel Works) is known to have been operating as a wire mill. Miller believed it was around the time of conversion to paper bag making in 1890 that water power ceased to be used. Map evidence suggests the dam was reverting to marsh by 1925. It is not clear when buildings were finally cleared from the site. Unknown preservation on the site although it appears from OS Landline data that the weir still exists in some form although the rest of the site is now covered by woodlands. Dam earthworks likely to survive as are building platforms and footings of the mill buildings. Partial legibility within the wooded area.