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List Entry Summary

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


List entry Number: 1140215



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


District: Cornwall

District Type: Unitary Authority

Parish: Calstock

National Park: Not applicable to this List entry.

Grade: II

Date first listed: 19-Oct-1987

Date of most recent amendment: Not applicable to this List entry.

Legacy System Information

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

Legacy System: LBS

UID: 60884

Asset Groupings

This list entry does not comprise part of an Asset Grouping. Asset Groupings are not part of the official record but are added later for information.

List entry Description

Summary of Building

Legacy Record - This information may be included in the List Entry Details.

Reasons for Designation

Legacy Record - This information may be included in the List Entry Details.


Legacy Record - This information may be included in the List Entry 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

Selected Sources

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

National Grid Reference: SX4444368923


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End of official listing