The work of recovering tram-rails is being carried out by various highway authorities in collaboration with the Ministry of War Transport. The information asked for, in respect of the many jobs, is not available, and could not be obtained without a considerable expenditure of time and labour. I am, however, pleased to inform the hon. Member that over 50,000 tons of valuable material have been recovered from this source, and this is less than half the total amount which tram-rails can yield.