Dartmoor Explorations

A collection of walks, discoveries, insights and pictures of exploring Dartmoor National Park

Virtuous Lady Mine

The Virtuous Lady Mine is famously said to have been named in honour of Elizabeth I having been worked from 1588. That said, the earliest known documentation relating to the mine only confirms an early 18th century date. It is stated (Harris, H., 1986, Industrial Archaeology of Dartmoor) that the mine was worked from 1588 until 1807. Then it reopened in the 1830s before finally closing in 1879. Other sources (Rendell, P. Exploring the Lower Walkham Valley) suggest the mine re-opened in 1816 and closed in 1873.

The mine is dispersed over a small ‘peninsula’ of the River Tavy just downstream from Double Waters, where the Rivers Walkham and Tavy meet. The earliest workings are believed to have been at the western end of the site, at the foot of a ‘cliff’ outcrop below Tavy Cottage. Copper extraction was produced around 4000 tons annually in the mid-19th century. In 1870, some of the workings were reported to have been to a depth of 120 feet (36.5m) with up to 43 people being employed. (Harris).

There was no processing (smelting) of the ore on site (just rock crushing). The ore was removed by packhorse over a bridge initially to a place called “Orestocks” to the west, thence to Morwellham in a train of horse-drawn wagons. From Morewellham it was shipped to South Wales for smelting (Rendell).

For the explorer there is quite a considerable above-ground features relating to the mine still to be found. The Devon and Dartmoor HER (ref MDV5458) has been used for a lot of the information contained herein. The features are not always obvious if just taking a walk on the track between Double Waters and Buckland Monachorum. The author has annotated grid references of the main features in this post to aid the reader.

Map
This sketch map shows the key features of the Virtuous Lady Mine site, which are covered in this post.
VL1
The Crusher House at Virtuous Lady Mine is a very ruined building constructed from killas. The term Killas is a Cornish mining term for metamorphic rock strata of sedimentary origin which were altered by heat from the intruded granite. Next to the Crusher House are the remains of a wheelpit.
VL2
The building would have contained crushing rollers powered by the waterwheel. Three corners of the structure survive, with the tallest around 3m high. 
VL3
The Dartmoor HER records states that the interior dimensions are 4.9m by 5.6m with walls of 0.65m thick. 
VL4
The Crusher House still has some timber lacing of the walls in situ.
VL5
The centre of the Crusher House was recorded at SX47381 69896
VL6
The wheelpit from which the wheel powered the crusher rollers is on the eastern end of the Crusher House.  It is recorded as being 8.3m long by approximately 1.5m wide, albeit the wheelpit has been backfilled. The wheelpit is at SX47379 69893. It is suggested (Rendell) that the wheelpit also drove a flat rod system to aid the pumping out of shafts on the opposite side of the river (at Wheal Bedford Mine).
VL7
Water for the wheel was provided by a spillway, which diverted water from the Lady Bertha Mine Leat, 100m uphill from this point (which is covered later in this post). The water, upon reaching the bottom of the slope (by the track) entered a hollow earthwork reservoir / pond for storage. A lovely stone arched tunnel allowed the water to run beneath the track before a short section of leat then diverted it to the wheel. The water would then have returned to the River Tavy nearby. The Lady Bertha Mine Leat take off point is on the River Walkham near Grenofen Bridge, several km’s away.
VL8
The Eastern Engine shaft is quite close to the track and has been capped with long granite stones. It is relatively inconspicuous unless approached from the Crusher House or River Tavy when a small opening at the top of a gully makes it quite obvious. It can be located at SX47419 69869
VL9
The internal views of the shaft show some apparent grooving, which may have been as a result to equipment being used for ascent / decent. It is known that cables were used here as to the east of the shaft is a well-preserved capstan pit. The shaft does not appear to have any associated drainage adit, so water was pumped to surface. The power for the pumps came from a water wheel sited approximately 60m south-east up a steep slope (which is covered later in this post).
VL10
The Capstan Pit lies along a 11m earthwork channel leading from the Eastern Engine shaft. The Capstan Pit is recorded at SX47441 69871
VL11
The Dartmoor HER describe this feature thus: “It sits within a 4.4m diameter plat and the central pit is stone lined with a slight batter: it has a diameter of 2.7m”.
VL12
A possible whim lies at the bottom of the slope from the Eastern Engine Shaft. This is a best guess location by the author.
VL13
The possible whim is located at SX47411 69897
VL14
This large spoil heap of approx. 50m long runs close by the river at was recorded (on its summit) at SX47341 69908
VL15
This capped shaft within a large conical pit is surrounded spoil. It can be located at SX47309 69898
VL16
It is recorded that this might have been a hauling shaft.
VL17
Close up of the shaft
VL18
Looking across the River Tavy from the make shift shelter by the rivers’ edge is what appears to be a cave or probable adit associated with Wheal Bedford copper mine. The mine was first recorded in 1807 and is believed to have been the Virtuous Lady Mine in 1857.
VL19
A little further upstream from the adit / cave there is a possible shaft (not explored by the author). Wheal Bedford Mine lies on private land.
VL20
An old 19th century map places another shaft close to the waters edge. It does seem rather inconceivable that one would have been sunk here for the obvious flooding reasons and there is no apparent means of pumping. The author is not convinced that this feature is indeed a shaft but was recorded at SX47273 69876
VL21
Close to the shaft located at SX47309 69898 is a levelled out piece of ground believed to have been the location of a whim.
VL22
The Dartmoor HER states that “although not well defined, the position of a whim would have been on the south side”. It certainly is quite indistinct.
VL23
The whim is located at SX47298 69877
VL24
Dressing Floor next to (south) the track
VL25
The Dressing Floor was recorded at SX47349 69859
VL26
The wheelpit (10.5m by 1.6m), which is constructed from killas, is quite conspicuous beside the track (south side). It speculated that the wheel may have powered pumps at the Eastern Engine Shaft a short distance away. This would have been either before the larger wheel uphill by the Lady Bertha Mine Leat was installed (or even after the larger wheel became disused).
VL27
The wheel pit can be found at SX47384 69861.
VL28
Close to the Dressing Floor and just uphill from the Wheelpit lies Season Shaft. A spoil heap to the north is indicative of waste material hauled up this shaft. 
VL29
Season Shaft can be found at SX47377 69832
VL30
As recorded earlier in this post water from a spillway from Lady Bertha Mine was diverted downhill. Upon reaching the bottom of the slope (by the track) entered a hollow earthwork reservoir / pond for storage. This water was used to driver the waterwheel at the Crusher House. Photographing this reservoir / pond doesn’t provide the ‘depth’ of vision needed. The centre of the hollow is recorded at SX47413 69848
VL31
The stone arched bridge / tunnel on the south side (reservoir side) of the track
VL32
The stone arched bridge / tunnel on the north side of the track with the reservoir beyond
VL33
Near Lady Betha Mine Leat is the rather ruined wheelpit which housed a wheel used to power pumps at Eastern Engine Shaft 
VL34
The tailrace from the wheelpit is obvious and probably the best route to follow when ascending the hillside. The Eastern Engine Shaft lies downhill diagonally right behind the larger three trees on the right.
VL35
Fragments of wall still survive today and it is suggested the wheelpit measures 1.4m wide by up to 15m long. The wheelpit was recorded at SX47482 69826
VL36
As cited in the Dartmoor HER, it is most unusual for a pumping waterwheel to be located at higher elevation than the shaft in which it powered pumps. Is this possibly the reason why a smaller (supplementary) wheel was built further down the slope ?
VL37
Upslope of the wheelpit is a fabulous embankment, which almost abuts Lady Bertha Mine Leat.
VL38
The embankment has a wedge-like profile and is stone clad.
VL39
The embankment is recorded as being 13m long by approx. 2m high and being 2m wide along the top. The end of the embankment was recorded at SX47490 69810
VL40
View from the end of the embankment with with the wheelpit below. The wheel must have been an impressive site when in place.
VL41
Virtuous Lady Crags (West) lie above Lady Bertha Mine Leat. More information including how these crags were named can be found at https://www.torsofdartmoor.co.uk/tor-page.php?tor=virtuous-lady-crags
VL42
The Lady Bertha Mine Leat took water from the Walkham near Grenofen Bridge to Lady Bertha Mine where it served four waterwheels. As can be seen by this post it also served three waterwheels at the Virtuous Lady Mine. Near to the crags, the leat splits, with one section passing through a tunnel and the second section passing around the slope on what would have been a wooden launder. The tunnel entrance is at SX47373 69782
VL43
The Lady Bertha Mine Leat Tunnel at the north side. The author met a local who informed him that it was possible to walk through the tunnel (which is approx 100m long), though would not be recommended.
VL44
Lady Bertha Leat (non-tunnel route) as it follows the contours of the hill.
VL45
The site of where the wooden launder was most likely located on the Lady Bertha Mine Leat.
VL46
The south side to the Lady Bertha Mine Leat tunnel can be located next to the track to Buckland Monachorum
VL47
Just inside the south entrance of the Lady Bertha Mine Leat Tunnel. The tunnel does look very well constructed. The author is not aware which came first the wooden launder or the tunnel but suspects the launder came first which maybe was subsequently replaced by the tunnel as the route for the leat.
VL48
The two leat routes combine just below the track.
VL49
All that remains on the ground of this shaft (which is capped) is a small spoil heap. This is located at SX47303 69751
VL50
This blocked trial adit just north of a track on moderately sloping ground lies at SX47338 69713
VL51
This blocked unnamed shaft is described as having a conical pit with a spoil collar.
VL52
This shaft lies below the cliff near Tavy Cottage and can be located at SX47223 69737
VL53
The Dartmoor HER states that: “William’s Engine shaft is marked on the Abandoned Mine Plan (Devon Record Office AMP R80B) to the west of Tavy Cottage. Its location is likely to be at the foot of the cliff”.  The author believes this is the location at SX47189 69775
VL54
The Dartmoor HER further states that “The cliff face here has been consolidated by building a revetment against it”. The description fits the location shown in the photograph.
VL55
Inside the portal of William’s Engine Shaft.
VL56
The Dartmoor HER further describes “A short length of adit runs off into the rock driving south”
VL57
 There is a large adit opening north of William’s Shaft at SX47214 69797
VL58
Inside the adit portal, there appears to be two tunnels.
VL59
Just outside the adit portal is a large stone revetted level platform which would have served as a working area. At its base is a small opening, which appears at one tine would have had a metal grille. The opening is located at SX47203 69793
VL60
The author is unaware what this small opening / tunnel would have been used for at the base of the stone revetted platform. Does anyone reading this post know the answer ?
 VL61
The remains of the ‘Old Dressing Floor’ which is annotated on the Abandoned Mine Plan.
VL62
Track next to the ‘old dressing floor’ next to the River Tavy
VL63
Looking south down the River Tavy in the direction of Lady Bertha mine.
VL64
This partially open adit drives east into the hillside. It is on the east uphill side of a track.
VL65
The adit is located at SX47383 69617

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