Great Drain; Under Cover Slab; North of Pit 6, ΚΖ-ΚΗ. Note the cover slab is around 0.10 higher than the east wall block used as 0.00 in other cuts here ... ΟΟ-3 486, 487 ΟΟ:1947.0519:3 ΟΟ:1947.0519:4 N 46842 Lot ΟΟ 94 Lot ΟΟ 96 Lot ΟΟ 98 Section ΟΟ 86 ... may 17-20 1947