Grand Slam (bomb)
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The Bomb, Medium Capacity, 22,000 lb was a 22,000 lb earthquake bomb used by RAF Bomber Command against German targets towards the end of the Second World War. The bomb was originally called Tallboy L
A Grand Slam bomb being handled at RAF Woodhall Spa in Lincolnshire
Grand Slam bomb casings awaiting delivery
An Avro Lancaster B Mk I (Special) with a Grand Slam, running up its engines at RAF Woodhall Spa.
Bielefeld Viaduct following the raid; five arches are missing and craters from previous raids can be seen.
Tallboy (bomb)
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Tallboy or Bomb, Medium Capacity, 12,000 lb was an earthquake bomb developed by the British aeronautical engineer Barnes Wallis and used by the Royal Air Force during the Second World War.
Grand Slam (bomb)
…Tallboy Large until the term Tallboy got into the press and the code name was replaced by "Grand Slam". The bomb was similar to a large version of the Tallboy bomb but a new design and closer to the size that its inventor, Barnes Wallis, had envisaged when he developed the idea of an earthquake bomb. It was the…
RAF ground crew handling the Tallboy that was later dropped on the La Coupole V-weapon site at Wizernes, France, 1944
Tallboy earthquake bomb on trailer at Brooklands
Six Tallboy bombs in a bomb dump at Bardney, Lincolnshire, prior to being loaded on No. 9 Squadron RAF aircraft in October or November 1944
Damage to the Fortress of Mimoyecques from Allied air attacks, including attacks with Tallboy bombs