Mixed ... H.Α. Thompson D. Burr-Thompson ... 2939 3128 ... 1951, 1954
Late Walls. Late Wall ... Ζ-16 3055, 3056 Ζ 1933 SS 13598 Ζ:1954.0430:12 N 19768 Section Ζ 406 Section Ζ 405 ... 20 Apr 1954