asked the Minister of Fuel and Power what recommendations he has made to the manufacturers of oil burning equipment as regards the size of installation to which priority should be given.

The size of an installation is only one of the considerations affecting the priority of conversion; local difficulties in coal distribution, the particular type of coal to be saved, the capacity of local oil distribution facilities and the time estimated to be required to complete the conversion are other important factors.

Other things being equal, surely manufacturers should give priority to the largest fuel consumers?

Priority has been arranged.

Is the Minister aware that certain conversions have not taken place because the people concerned have asked for a three months' guarantee of oil which has been refused, and will he look into this?

If the hon. Member knows of any industrial firm who have asked for a three months' guarantee which has been refused, he might let me know.

I will.