asked the Under-Secretary of State for Air the purpose of his Department in asking tenderers for used lubricating oil to state whether it is the tenderer's intention to re-refine the used oil for which he is tendering.
Because, other things being equal, we give preference to re-refiners.
In view of the fact that much of this oil is not being used by my hon. Friend's Department, will he ascertain the ultimate destination of the oil and whether, from a national point of view, it should not be re-refined rather than wasted?
I told my hon. Friend last week that all the oil we had sold this year was to be re-refined.