1. Aalco, 2005. Technical Information: Stainless Steel. Available from: .
2. Heavy metal and magnetic relationships for urban source sediments
3. Chromium File, 1996. A review of skin sensitisation caused by chromium. Issue no. 2, October 1996, from the International Chromium Development Association.
4. Heavy metals entering sewage treatment works from domestic sources;Comber;J. CIWEM,1996
5. Comber, S.D.W., Gunn, A.M., 1994. Diffuse sources of heavy metals to sewers. Final report to the Department of the Environment, Report No. DoE 3624(P); DoE reference PECD 7/7/406.