Deposit 174 31 NB174 P031 Box6 NB174 P031 B-I:17-20 +0.40 to -0.10 m. B-I:17-20 black soft fill from +0.40 to -0.10 B-I:17-20, dark soft earth, from +0.40 to -0.10 m ... 1937/11/17