Okeltor Mine Buildings

OKELTOR MINE BUILDINGS

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Overview

Heritage Category:
Listed Building
Grade:
II
List Entry Number:
1140215
Date first listed:
19-Oct-1987
List Entry Name:
Okeltor Mine Buildings
Statutory Address:
OKELTOR MINE BUILDINGS
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Date:
2006-07-26
Reference:
IOE01/15931/21
Rights:
© Mr Brian J Williams. Source: Historic England Archive

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Official list entry

Heritage Category:
Listed Building
Grade:
II
List Entry Number:
1140215
Date first listed:
19-Oct-1987
List Entry Name:
Okeltor Mine Buildings
Statutory Address 1:
OKELTOR MINE BUILDINGS

The scope of legal protection for listed buildings

This List entry helps identify the building designated at this address for its special architectural or historic interest.

Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.

For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.

Understanding list entries

Corrections and minor amendments

The scope of legal protection for listed buildings

This List entry helps identify the building designated at this address for its special architectural or historic interest.

Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.

For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.

Understanding list entries

Corrections and minor amendments

Location

Statutory Address:
OKELTOR MINE BUILDINGS

The building or site itself may lie within the boundary of more than one authority.

District:
Cornwall (Unitary Authority)
Parish:
Calstock
National Grid Reference:
SX4444368923

Details

CALSTOCK OKELTOR MINE
SW 46 NW
4/137 Okeltor Mine buildings
II
Mine buildings including engine house with chimney about 30 metres to north west ;
count house and smithy. Mid - late C19. Slatestone rubble with brick dressings.
Plan: The mine extends from west to east, on the upper bank of the River Tamar,
opposite Gawton om the Devon side. The mine was worked for lead, copper, tin and
arsenic production, and there are a variety of remains of the buildings on site. The
pumping engine house is towards the middle of the side, with chimney to north west.
The count house and smithy are at the west end.
Exterior: The engine house is rectangular, with arched openings with brick dressings.
Bob wall to south. Part of the cylinder plinth, which is 2 wide granite stones,
remains in the centre. The engine house had a 50 inch cylinder draught engine,
operating 75 fathoms of 12 inch plunger lifts and 15 fathoms of 12 inch drawing
lifts, the date of installation being 1864. The chimney is in rubble, circular and
tapered, with brick top and cornice.
The count house is in rubble, single storey with a hipped slate roof ; window to
front and door to side. The smithy is adjacent, also single storey, with corrugated
iron roof ; open fronted.
Other buildings on the site include a dry, boilerhouse, crusher and whim engine
house, Brunton calciner, stamps, buddles, remains of arsenic labrynths and arsenic
chimney. This was one of the most important mines near Calstock, with a quay capable
of taking vessels up to 200 tons. The main engine shaft reached 80 fathoms below the
level of the Tamar, and the main copper load passes under the river into Gawton mine
on the Devon side. Okeltor continued working until 1887.
Sources: Tamar Valley Project. Booker, F.: Industrial Archaeology of the Tamar
Valley 1967. Hamilton Jenkin, A.L.: Mines and Miners of Cornwall 1976.


Listing NGR: SX4444368923

Legacy

The contents of this record have been generated from a legacy data system.

Legacy System number:
60884
Legacy System:
LBS

Sources

Books and journals
Booker, F, Industrial Archaeology of the Tamar Valley, (1967)
Hamilton Jenkins, A K, Mines and Miners of Cornwall, (1976)

Legal

This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.

Ordnance survey map of Okeltor Mine Buildings

Map

This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 12-Jul-2026 at 18:18:40.

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© Crown copyright [and database rights] 2026. OS AC0000815036. Use of this mapping is subject to Terms and Conditions.

End of official list entry

All text content is available under the Open Government Licence v3.0 , except where otherwise stated. Any supplied maps are © Crown Copyright [and database rights] 2026 OS AC0000815036 and may not be reproduced without permission.

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