ZUM4893752 Nov. 11, 1953 - Helped to blow-up dieppe: Mr. R.S. Macrae of Banstead, surrey - and commission on awards to isentores, at somerset house today. They claim the invention of the limpet bomb and the clam magnetic bomb which did so much in demolition and sabotage work during the war. Mr. Macrae described how they incorporated ?'Aniseed balls?' in their invention because it was found that the sweets dissolved at a wegular speed in either fresh of salt water-proving to be much more satisfactory that any of the chemicals produced by chemists for the bombs. When the aniseed balls had dissolved they released a striker which set off the bombs - this giving the operators sufficient time to get away from the scene by .; (add.info.: Nov. 11, 1953 - Helped to blow-up dieppe: Mr. R.S. Macrae of Banstead, surrey - and commission on awards to isentores, at somerset house today. They claim the invention of the limpet bomb and the clam magnetic bomb which did so much in demolition and sabotage work during the war. Mr. Macrae described how they incorporated ?'Aniseed balls?' in their invention because it was found that the sweets dissolved at a wegular speed in either fresh of salt water-proving to be much more satisfactory that any of the chemicals produced by chemists for the bombs. When the aniseed balls had dissolved they released a striker which set off the bombs - this giving the operators sufficient time to get away from the scene. photo shows MRRS Magrae (left) and MRC.V. Clarke after attending third morning session at somerset house. they claimed that their invention was used to blow up dieppe etc.); Photo ?? Keystone/Zuma; .