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An alluvial tin streamwork adjacent to the Brim Brook

List Entry Summary

This monument is scheduled under the Ancient Monuments and Archaeological Areas Act 1979 as amended as it appears to the Secretary of State to be of national importance. This entry is a copy, the original is held by the Department for Culture, Media and Sport.

Name: An alluvial tin streamwork adjacent to the Brim Brook

List entry Number: 1018928

Location

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

County: Devon

District: West Devon

District Type: District Authority

Parish: Dartmoor Forest

National Park: DARTMOOR

Grade: Not applicable to this List entry.

Date first scheduled: 07-Jun-2000

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: RSM

UID: 28731

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 Monument

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

Reasons for Designation

Dartmoor is the largest expanse of open moorland in southern Britain and, because of exceptional conditions of preservation, it is also one of the most complete examples of an upland relict landscape in the whole country. The great wealth and diversity of archaeological remains provide direct evidence for human exploitation of the Moor from the early prehistoric period onwards. The well-preserved and often visible relationship between settlement sites, major land boundaries, trackways, ceremonial and funerary monuments as well as later industrial remains, gives significant insights into successive changes in the pattern of land use through time. On Dartmoor, tin streamworks represent intermittent tin working activity dating from the medieval period to the 20th century. During this time previously abandoned works were often brought back into production, while some streamworks are still not exhausted, raising the possibility that they may become viable once again. Streamworks exploited tin deposits that had been detached from the parent lode and redeposited by streams and rivers within either alluvial deposits in valley bottoms or in eluvial deposits in shallow, steeper tributaries on hillsides. The technique involved large scale extraction (which has left major earthworks visible in the landscape) and the use of water to separate tin from the lighter clays and silts which contained it. The water derived either from canalised streams or reservoirs fed by specially constructed leats which can be seen running for several miles along the contours of many hillsides. The streamworks themselves survive as a series of spoil dumps, channels and disused work areas which indicate their character and development. Streamworking was particularly prevalent on Dartmoor, being by far the most numerous and extensive type of tinwork on the moor. Remains are to be found in most valley bottoms and on many hillsides, where they make a dominant contribution to landscape character as well as providing unusually detailed evidence for medieval industry. Streamworks on Dartmoor will be considered for scheduling where they are well preserved and representative of the industry in this area, or where there is a demonstrable relationship with medieval and later settlement and its associated remains.

The alluvial tin streamwork adjacent to the Brim Brook survives very well and contains important information concerning the developing technology associated with the exploitation of valley bottom tin deposits. Of particular interest are the range of visually impressive revetted spoil dumps, which highlight and graphically illustrate one of the major alluvial extraction methods.

History

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

Details

The monument includes an alluvial tin streamwork situated adjacent to the Brim Brook. The streamwork contains a range of well-preserved earthworks which suggest multi-phase exploitation of the tin deposits. Most of the waste dumps generated during streamworking lie at right angles to the valley bottom and many of them are revetted by drystone walling on their northern sides, facing upstream. Three discrete blocks of this type of streamwork are visible and each is served by a well-preserved leat. Within the northern part of the monument there are a small number of relatively narrow banks lying parallel with the river and these may represent dumps of more recent origin. Within the streamwork there are three rectangular buildings used by the tinners for shelter and storage. All of these buildings have been cut into earlier waste dumps. The northernmost building measures, internally, 5.2m long by 3.2m wide, is defined by a 1.5m wide drystone wall standing up to 1.3m high and is subdivided into two rooms. The interior of the central building measures 4.8m long by 2.1m wide and the surrounding 1.9m wide drystone wall is up to 1.1m high. The southern building is much larger than the others, with internal dimensions of 8.6m long by 3.5m wide.

MAP EXTRACT The site of the monument is shown on the attached map extract. It includes a 2 metre boundary around the archaeological features, considered to be essential for the monument's support and preservation.

Selected Sources

Other
MPP Fieldwork by S. Gerrard, Gerrard, S., (1999)
MPP Fieldwork by S. Gerrard, Gerrard, S., (1999)

National Grid Reference: SX 58935 87436

Map

Map
© Crown Copyright and database right 2017. All rights reserved. Ordnance Survey Licence number 100024900.
© British Crown and SeaZone Solutions Limited 2017. All rights reserved. Licence number 102006.006.
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The above map is for quick reference purposes only and may not be to scale. For a copy of the full scale map, please see the attached PDF - 1018928 .pdf

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This copy shows the entry on 20-Nov-2017 at 11:19:42.

End of official listing