1. Adams, O. (1997), “Contractor development in Nigeria: perceptions of contractors and professionals”, Construction Management and Economics, Vol. 15 No. 1, pp. 95‐108.
2. ALLMI (2008), The Association of Lorry Loader Manufacturers and Importers, available at: www.allmitraining.co.uk/ (accessed 23 February 2009).
3. Amirkhanian, S.N. and Baker, N.J. (1992), “Expert system for equipment selection for earth‐moving operations”, Journal of Construction Engineering and Management, Vol. 118 No. 2, pp. 318‐31.
4. Anon (2007), “Greatest ever construction machines”, Sub‐domain of the Discovery Channel, available at: www.discoverychannel.co.uk/greatest_ever/construction_machines/index.shtml (accessed 23 February 2009).
5. Araya, H., Katuzen, M., Kinugawa, H. and Arai, T. (2004), “Level luffing control for crawler cranes”, Automation in Construction, Vol. 13 No. 5, pp. 689‐97.