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| Drain 2 ... AMS Horizontal (normal) ... Drain 2. |
| Drain 4, Drain 1, Subsidiary Drain 2, and Drain 2. From the south ... Scanned 2005 for the 75th anniversary exhibition and publication. 673 Horizontal (normal) ... May 1932 ... Drain 4, Drain 1, Subsidiary Drain 2, and Drain 2. |
| Drain 4, Drain 1, Subsidiary Drain 2, and Drain 2. From the south ... AMS north 673 Horizontal (normal) ... 1 May 1932 ... Drain 4, Drain 1, Subsidiary Drain 2, and Drain 2. |
| Room A, Drain 2 ... AMS 1248 Horizontal (normal) ... 16 Jun 2004 ... Room A, Drain 2. |
| Drain 2, from the west ... Scanned 2005 for the 75th anniversary exhibition and publication. 279 Horizontal (normal) ... 12 Mar 1932 ... Drain 2, from the west. |
| Drain 2, from the east ... AMS west 243 Horizontal (normal) ... 7 Mar 1932 ... Drain 2, from the east. |
| Drain 2, from the west ... AMS east 279 Horizontal (normal) ... 12 Mar 1932 ... Drain 2, from the west. |
| Drain 2, from the east ... AMS west 357 Horizontal (normal) ... 29 Mar 1932 ... Drain 2, from the east. |
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