1.Previous
3.Next

Watford, in May 1942 and then the breaching of the disused Nant-y-Gro dam in Wales in July. A subsequent test suggested that a charge of 7500 lb exploded 30 ft under water would breach a full-size dam; crucially this weight would be within the carrying capacity of an Avro Lancaster. The first air drop trials were at Chesil Beach in December 1942; these used a spinning 4 ft 6 in sphere dropped from a modified Vickers Wellington,

1.Previous
3.Next