Historical street view Manchester area 1940s, 1950s showing Ordnance Survey revision point marking. The Top o'th Cross area of Radcliffe was famed for dyeing and bleaching and chemical manufacture. The photo is taken looking across the River Irwell to a chemical works. Notice on the left the dry stone support wall, and a large collection of carboys often containing chemcial and bleach. Notice how the chemicals have leached into the river whitening the wall. 1954