173 [no page number], Trench X Cross section S-N looking West, 13/7/1972, Drawing, Trench X Cross section S-N looking West Pg. 173, 14/7/1972, NB521 B41, Lot 1972 222 Pg. 173, 14/7/1972, NB521 B41, A 1972 ... 13/7/1972, 14/7/1972 ... Pg. 173, 14/7/1972, NB521 B41, 1972-071-31, Trench 10. Cut through wall 2,
