History 1930 - 1939

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1934 April Balcombe and Sheppard first attempt Swildon's Sump 1.

1935 Balcombe and Powell reach chamber 7, Wookey Hole, in a series of dives in standard dress.

1936 October Sheppard passes Sump 1, Swildon's hole, using a home made dry suit fed by a football inflator pump

1936 November Balcombe adds an oxygen cylinder to his home made B.A. and becomes self contained. He passes Sump 2, Swildon's Hole

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