These scientists did underwater experiments secretly on them

At this time, scientists were already aware of the dangers of 'decompression sickness.'

Related Keywords

Liverpool Bay , United Kingdom General , United Kingdom , France , Great Britain , British , French , Rachel Lance , Alexis Rosenfeld Getty , John Burdon Sanderson Haldane , John Haldane , Helen Spurway , Royal Navy , Central Press Hulton Archive Getty Images , French Navy , Chamber Divers , Topical Press Agency Getty Images , University College London , Association Of Scientific Workers , British Admiralty , Topical Press , Getty Images , Cover Image Source , Image Source , University College , Representative Image Source , Rescue System , Professor John Haldane , North West Coast , Untold Story ,