Part of Oral Answers to Questions — Employment – in the House of Commons am 12:00 am ar 8 Gorffennaf 1963.
Danfonwch hysbysiad imi am ddadleuon fel hyn
The estimated number of employees was 9,443 in 1951 and 6,544 in 1961; I regret that the figure for 1963 is not yet available.