§ Mr. Gareth Wardell
To ask the Secretary of State for Employment how many men aged 55 years and over were employed in British coal mines as underground workers for each of the past 10 years.
§ Mr. Oppenheim
Estimates of the numbers of employed persons by industry are collected by the Employment Department's "Labour Force Survey". However, no information is available for the age group requested, because the sample size is too small to provide reliable estimates.