The workings are divided into two areas, one on the west side of Cefn Gunthly Hill and one on the east side working three parallel veins. On the west side there is an adit south-east of Pultheley Farm, now used as a water supply for cattle. This has been explored for about 30 yards in 3ft deep water to a blockage of stone and rubble. An old blacksmith’s sledge hammer was found in this adit, which was driven in 1832. In the wood further up the hill is a square shaft in good condition but blocked 50ft down. This probably corresponds to the blockage in the adit. Further along the same line, in the next field, is a collapsed adit and infilled open stoping can be followed up the hill from here to another shaft. The latter is blocked with a large number of dead sheep.
There is a line of collapsed adits up the north-east side of the hill and a line of collapsed shafts on the hill top. On the east side, an obvious spoil tip can be found by following the track to a field boundary. It is associated with a adit containing deep water and 2ft airspace. This was explored in 1964 to a blockage after 33 yards. Further up the hillside is a depression marking a collapsed shaft, corresponding to the blockage in the adit. Various depressions can be seen up the hillside, leading to a more obvious line of filled surface stoping which ends at a collapsed shaft. Adjacent to the adit entrance is a wet depression in the hillside, perhaps another adit.
By following the line of workings down the hill to the stream, another adit can be found which has collapsed for some distance but still issues water. On the same bank of the stream, 200 yards to the north, is an open adit driven to intersect a vein. There is an open shaft just above the adit and a badly covered shaft further up the hillside. Another shaft higher up near the track has collapsed. The adit is 45 yards long in 3ft deep water, leading to stoping and an upper level before the shaft. It is possible that the last two adits were the workings known as Heathmynd Mine.