asked the Secretary of State for Trade and Industry what tonnage of pulverised fuel ash is produced by British power stations each year; and what efforts have been made to find industrial uses or commercial outlets for this waste.

For power stations in England and Wales this is the responsibility of the Central Electricity Generating Board and I am asking the Chairman to write to my hon. Friend. Questions on electricity in Scotland are, of course, a matter for my right hon. Friend the Secretary of State for Scotland who is asking the Chairman of the South of Scotland Electricity Board to write to my hon. Friend.