Martyr 1 cut down to level of first (Turkish) strosis ... AMS southeast 444 Horizontal (normal) ... 8 Apr 1937
Casting pit ... AMS north 748 Horizontal (normal) ... 9 April 1937
Casting pit ... AMS north 746 ... 9 April 1937
From east. 1=Building C. 2=Cover Slab of Great Drain. 3=Late Foundation ... Scanned 2005 for the 75th anniversary exhibition and publication. 1523 Horizontal (normal) ... 10 Apr 1937
Casting Pit A. Upper layer ... Scanned 2005 for the 75th anniversary exhibition and publication. 745 Horizontal (normal) ... 9 Apr 1937
Martyr 1 cut down to level of first (Turkish) strosis ... southeast 444 Horizontal (normal) ... 8 Apr 1937
Casting pit ... north 748 Horizontal (normal) ... 9 April 1937
Casting pit ... north 746 Horizontal (normal) ... 9 April 1937
Casting Pit A. Upper layer ... AMS 745 Horizontal (normal) ... 9 Apr 1937
From east. 1=Building C. 2=Cover Slab of Great Drain. 3=Late Foundation ... AMS 1523 Horizontal (normal) ... 10 Apr 1937