asked the Minister of Transport what is the approximate proportion of railway company engines normally engaged in hauling coals.

Twenty to 30 per cent., Sir.

Is my right hon. Friend satisfied that the proportion will be adequate to ensure that all the coal trucks do not remain in sidings for a long period?

I do not think there is any justification for the inference that coal trucks do remain in sidings for any length of time. In any case, that is not the Question I have been asked to answer.