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Wheal Unity Wood (Tolgullow United Mine; West Poldice Mine), St Day, Redruth, Camborne - Redruth - St Day District, Cornwall, England, UK

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Latitude & Longitude (WGS84): 50° 14' 53'' North , 5° 10' 48'' West
Latitude & Longitude (decimal): 50.2480555556, -5.18
UK National Grid Reference:SW733436
Other regions containing this locality:Devon and Cornwall metalliferous mining district, England, UK

Unity Wood Mine extends over a strike length of approximately 1 km extending in an east-north-easterly direction from Zimapan in the west through the southern section of the woods known as Unity Wood to its eastern limit in the vicinity of a farm known as St Neot.

The most visible remains of the mine are two engine houses in the vicinity of Magors Shaft. These comprise a large pumping engine house that pumped from Magors Shaft and a smaller rotative engine house that appeared to have done multiple duty of stamping and winding. Unusually, this engine house is not in an aligment that would have allowed it to easily wind from Magors Shaft, but instead it is believed to have wound from a shaft some way to the south-west of it.

A significant dump is still to be found to the south-west of Magors pumping engine house that will yield specimens with diligent searching. An accessable dump of Harpers Shaft lies approximately 100 metres to the north-east of Magors Shaft.

The section of the mine that lies within the woodland itself has several shafts, the majority of these are now choked with others having been made safe.

There are also exensive ancient surface workings marking the courses of lodes on the site. Whilst collecting in here is challenging, applying diligence and patience can yield some extremely good specimens.

Mineral List

15 valid minerals.


Geologic TimeRocks, Minerals and Events
ⓘ Major polymetallic mineralization~270 MaCornwall, England, UK
ⓘ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
ⓘ Greisenization (latest age)~280 MaCornwall, England, UK
ⓘ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
ⓘ Formation of metallized pegmatites~285 MaCornwall, England, UK
ⓘ Greisenization (earliest age)~285 MaCornwall, England, UK
ⓘ Emplacement of major plutons~295 MaCornwall, England, UK

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


- Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 404-405.
- Embrey, P.G., and Symes, R.F. (1987): Minerals of Cornwall and Devon, p. 50.

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