Greenpeace pipe blocking at Albright & Wilson's Marchon plant in Cumbria, NW England. On 30 August 1991, Greenpeace successfully prosecuted Albright & Wilson for polluting the Irish Sea with heavy metals in the first private prosecution under the 1989 Water Act but the National Rivers Authority has refused to take any action. (Greenpeace Witness book page 59) (Greenpeace Changing the World page 138)