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| One T-clamp at each end and one at center of back for attachment to a backer block; lengths 0.097m., 0.112m., 0.12+; heads 0.081m., 0.069m., 0.074m.; depths 0.015m., 0.022m., 0.028m. Anathyrosis at ends ... 11 March 1981 |
| Originally one T-clamp at each end (but one broken away) and one at center of back for attachment to a backer block; lengths 0.117m., 0.112m.; heads 0.069m., 0.075m.; depths 0.035m., 0.042m. Anathyrosis ... 11 March 1981 |
| One T-clamp at left end (none at right) and one off-center at back for attachment to a backer block; lengths 0.10m., 0.11m.; heads 0.065m., 0.073m.; depths 0.042m.,0.043m. Two pry cuttings at 0.12m. from ... 11 March 1981 |
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