HC Deb 28 February 1984 vol 55 c135W
Mr. Mason

asked the Secretary of State for Energy what losses the National Coal Board has incurred as a result of the overtime ban being imposed on the industry by the National Union of Mineworkers.

Mr. Giles Shaw

I understand from the NCB that up to 17 February 6.5 million tonnes of coal production had been lost as a result of the miners' overtime ban.