The topsoil from either side of the pipeline dividing phases 3B and 3C was stripped under archaeological supervision by a 360 degree excavator with a ditching bucket on its back actor and dumpers, with care being taken not to track over sub-ploughsoil layers. Six 4x4m trenches were dug manually in successive 50mm or 100mm spits, to levels at which in situ floors, hearths or other structural remains could be clearly identified. One small 1.5 x 1.5m test pit was also excavated in the alluvial basin to the W of the pipeline corridor. The remainder of the site was stripped mechanically, in a similar manner to the topsoil, to a level at which features could be discerned. It was decided to remove a further shallow spit (0.1m). 1m wide box trenches were excavated by a tracked mini digger through selected linear features and some pits. A minimum 1m length of most ditches and gullies and the remaining fill of pits was then excavated manually in spits. (1) See E9338 for phase 2. See E9336 for W/B on pipe supports, E9337 for W/B on phase 1, E123 for excavation, E463 for excavation by Retford Arch. Grp., E9340 to E9342 for 1990 work, being trench 01, trench 02 and resistivity survey respectively.