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| Students digging Layer XX. Alina Pelliceron left, Kelly Low in centre, Allen Hogg on right ... AMS Horizontal (normal) ... 29 Jul 1993 |
| Students digging Layer XX. Alina Pelliceron left, Kelly Low in centre, Allen Hogg on right ... AMS 1060 Horizontal (normal) ... 29 Jul 1993 |
| Students digging Layer XX. With Brice Erickson on left, Ben Dolinka in centre, Steve Pigman on right ... AMS 1060 Horizontal (normal) ... 29 Jul 1993 |
| Melanie Grunow digging layer XXII ... AMS 1062 Horizontal (normal) ... 29 Jul 1993 |
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