§ Mr. WigleyTo ask the Secretary of State for Wales what proportion of derelict land in Wales is accounted for by(a) abandoned mines and quarries, (b) mineral waste tips and (c) old waste disposal sites.
§ Mr. Nicholas BennettA total of 55 to 60 per cent. of derelict land in Wales is accounted for by abandoned mines and quarries and about 15 per cent. by mineral waste tips. Details of old waste disposal sites are not maintained centrally.