At Eylesbarrow the engine shafts in which the water pumps were situated were located high on the brow of the hill where there was no adequate water supply for a waterwheel to be located nearby. Consequently, the power from the waterwheel was carried by a flatrod system up the hillside to the shafts. The rods were made of iron and were supported by pulleys with flanged rims that ran on short axles supported by pairs of granite pillars around 0.4 m apart. These pillars had distinctive notches cut into their tops to support the axles. Parts of four runs of these paired posts can be seen today. They vary in height from just above ground level to around a metre, and some run through shallow cuttings, representing the varying contour of the ground. From the wheelpit of the first waterwheel, two series of double pillars head eastwards up the hill, just to the north of the main track. The northern series heads towards Old Engine Shaft, a distance of . This shaft was in use from 1814 onwards. The southern, less well preserved series, probably led to Pryce Deacon's Shaft, away, and may have been in use in the 1840s. In the second, later, wheelpit, pictured here, the wheel itself was on the south side of the pit (on the right in this photograph). The short length of wall on the right is the end wall of the wheelpit. The mechanism operating the flatrod system was on the north side, aligned with the short section of wall visible further away on the left: this probably formed part of the first support for the flatrods, which are believed to have travelled underground until they reached a V-shaped gulley, just visible towards the top of the photograph. This flatrods from this wheel led towards Pryce Deacon's Shaft, away and also to Henry's Engine Shaft, away. A spur leads off at an angle to another unnamed shaft to the north, distant. The chronology of the use of these systems is not certain, though the extension to the northern shaft probably represents the very last phase of underground mining at the site. The purpose of a stamping mill is to crush the mined ore to a fine sand which is then processed at an adjacent "dressing floor" to separate the heavier tin ore from the waste material or "gangue", which is dumped. There are remains of six stamping mills at Eylesbarrow mine, an unusually high number, although they were not all in use at the same time.