JW Roberts (above) was based in Armley, a major surburb of Leeds. The factory manufactured asbestos and it is from there that mesothelioma has become so apparent in Leeds. JW Roberts let asbestos leak out of the factory into the surrounding neighbourhood and took no precautions to keep the local residents, mainly children, from entering the factory grounds. Children would play in and around the factory and in the loading bay where they would play amongst bags of blue asbestos.