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Title
Date
 
 Well12 February-25 March 1934 
 Well17-31 March 1934 
 First POU6 June 1935 
 Manhole28-29 June 1933 29 April-6 May 1936 
 Upper and 'transitional' filling19-22 May 1936 
 Upper Fill 1st c. A.D.1-3 June 1936 
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Middle filling1-14 April 1937 
 Well15-16 April 1937