but class conflict was not eased a year later when evacuation operations had to be put into effect again. On the other hand, some historians have recently contended that this revisionism of the "Blitz spirit" narrative may have been an over-correction. These include Peter Hennessy, Andrew Thorpe, and Philip Ziegler, who while admitting serious exceptions, argue that the population largely behaved well during the Blitz. Archive audio recordings In recent years a large number of wartime recordings relating to the Blitz have been made available on audiobooks such as The Blitz, The Home Front and British War Broadcasting. These collections include period interviews with civilians, servicemen, aircrew, politicians and Civil Defence personnel, as well as Blitz actuality recordings, news bulletins and public information broadcasts. Notable interviews include Thomas Alderson, the first recipient of the George Cross, John Cormack, who survived eight days trapped beneath rubble on Clydeside, and Herbert Morrison's famous "Britain shall not burn" appeal for more fireguards in December 1940. Bombsite rubble In one 6-month period, 750,000 tons () of bombsite rubble from London were transported by railway on 1,700 freight trains to make runways on Bomber Command airfields in East Anglia. Bombsite rubble from Birmingham was used to make runways on US Air Force bases in Kent and Essex in southeast England. Many sites of bombed buildings, when cleared of rubble, were cultivated to grow vegetables to ease wartime food shortages and were known as victory gardens. Tables Bombing raid statistics Below is a table by city of the number of major raids (where at least 100 tons of bombs were dropped) and tonnage of bombs dropped during these major raids. Smaller raids are not included in the tonnages. Sorties flown See also Baedeker Blitz Big Week Bombing of Dresden in World War II Bombing of Dublin in World War II Bombing of Wiener Neustadt in World War II London in World War II Operation Steinbock Operation Gisela V-1 flying bomb V-2 rocket Notes References Citations Sources Addison, Paul and Jeremy Crang. The Burning Blue: A New History of the Battle of Britain. London: Pimlico, 2000. Bungay, Stephen. The Most Dangerous Enemy: A History of the Battle of Britain. London: Aurum Press, 2000. Calder, Angus. The Myth of the Blitz. Pimlico, London, 2003. Collier, Richard. Eagle Day: The Battle of Britain, 6 August – 15 September 1940. J. M. Dent. 1980. Cooper, Matthew. The German Air Force