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| Rectangular water channel at foot of retaining wall ... AMS 123 Horizontal (normal) ... 17 Jun 1931 |
| Rectangular water channel at foot of retaining wall ... AMS 123 Horizontal (normal) ... 17 Jun 1931 |
| Retaining wall, south end ... AMS 156 Horizontal (normal) ... 19 Jun 1931 |
| South foundation ... AMS 156 Horizontal (normal) ... 19 Jun 1931 |
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