Beynon, Huw ; Cox, Andrew ; Hudson, Ray, Digging Up Trouble: The Environment, Protest and Opencast Mining , London, Rivers Oram, 1999, pp. 288 General analysis of impact of opencast (strip) mining which spread in Britain in the 1980s. Chapter 7 ‘Changing Patterns of Protest’ (pp. 167-206) looks at the collaboration between the National Union of Miners’ Support Groups and environmental groups to oppose mines creating pollution, and examines the turn from conventional protest to direct action.