Files concerning the Enfield 8000 Electric Car, electric buses and trains and associated technology developed by the Chloride Group plc. The files include academic papers, material on the Sinclair C5, a copy of 'Motor' magazine, an article from 'Autocar (21st February, 1976), booklets, brochures, drawings, photographs and a press release. The archive also contains a ring binder comprising a training manual, 'Underground Battery Locomotives and Manriding Trains', produced by the National Coal Board and sent to K. Hayes of Chloride Industrial Batteries Ltd to thank him for his contribution to its development.