|
|
| Middle drain to north of Building C, as cleared ... north 2567 Horizontal (normal) ... 31 May 1938 ... Ζ |
| Middle drain to north of Building C, as cleared ... south 2566 Horizontal (normal) ... 31 May 1938 ... Ζ |
| Middle drain to north of Building C, as cleared ... AMS north 2567 ... 31 May 1938 ... Ζ |
| Middle drain to north of Building C, as cleared ... AMS south 2566 ... 31 May 1938 ... Ζ |
|
|
