1. Building Research Establishment (BRE) (1998),Digest 433: Specifications for Recycled Aggregates, BRE, Garston.
2. Low-grade and manufactured aggregates — A review of prospects for utilisation
3. Construction Industry Research and Information Association (CIRIA) (1995),Remedial Treatment for Contaminated Land, Volume V, Excavation and Disposal, CIRIA, SP105, CIRIA, London.
4. Construction Industry Research and Information Association (CIRIA) (1997),Waste Minimisation and Recycling in the Construction Industry. Funders Report/CP/44, CIRIA, London.
5. DoE (1996),Making Waste Work, HMSO, London.