Behind and to the east of these dumps is the entry to an adit. A pair of drystone walls runs under the tips from higher workings. Investigation of this area has failed to find the adit due to the amount of material filling the mouth. There is a softwood lined shaft penetrating into the tip to the south of the single building. This is probably a sampling shaft and may be associated with the sampling work undertaken during the 1920-1940 period.
Similar shafts are evident all over the workings.
When examined, the building was in a derelict condition and the floor was covered with a large amount of stones and turf. The first action was to remove these stones which were partially filling the building. Most of these stones appear to have originated from the tip to the east which partly overlays this building. The northern closed end had a slightly raised area about 3ft wide and running the full width of the building. This covering was removed to expose a flat area consisting of two large stone slabs resting on a base of other stones.