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Summary

A 3 km leat running from the Wheal Anna Maria arsenic works via Wheal Frementor & Wheal Fanny to Wheal Maria as part of Devon Great Consols

Location

Protected Status: none recorded

Other References/Statuses

• Old DCC SMR Ref: SX47SW/504/25

Monument Type(s) and Dates

• LEAT (XVIII to XXI - 1751 AD to 2009 AD (Between))

Full description

Ordnance Survey, 1907, 105 SW (Cartographic). SDV276342.

Also recorded on OS 6" (1907) map.

Ordnance Survey, 1954, SX47SW (Cartographic). SDV336689.

'Old leat' recorded on OS 6" (1954) map. Runs from beneath Wheal Fanny (PRN 3870) to Wheal Anna Maria arsenic works (PRN 3873).

Pye, A. R. + Dixon, T., 1989, The Arsenic Works at Devon Great Consols Mine, Tavistock, 108 (Article in Serial). SDV219136.

Devon Great Consols. Most leat courses are still extant.

Richardson, P. H. G., 1992, The Mines of Dartmoor and the Tamar Valley after 1913, 94-108 (Article in Serial). SDV323598.

Other details: Fig 17.

Dyer, M. J. + Manning, P. T., 1998, Objective 5B: Lower Tamar Valley Recreation and Land Management Iinitiative: Cultural Heritage Appraisal, 34 (Report - non-specific). SDV319814.

Buck, C., 2002, Devon Great Consols: Archaeological Assessment, 73-74+ Figs 14,16,38 (Report - Assessment). SDV241758.

Leat shown on 19C maps from an adit & possible water wheel to the east of the arsenic refinery at Wheal Anna Maria (see PRNs 3873 & 3865) at SX42607310 running south to Wheal Frementor (see PRN 42210) then north through Blanchdown Woods to Wheal Fanny (see PRN 3870) at SX42007370 & eventually supplying the reservoir to Wheal Maria (see PRN 71318) & covering a distance of c3 km. An aqueduct 2m wide was built on a mound of mine waste to take the leat over the Wheal Fanny valley. From SX42357249 to SX42547287 evidence for the leat was removed when it was widened in 1922 to accommodate a narrow guage railway from Wheal Frementor to the arsenic complex. The railway up to 4m wide was found during the survey to resemble a track. Other details: Site 70.

Buck, C., 2009, Devon Great Consols Mine (Arsenic Works), Devon. Impact Assessment Report, 25-26 (Report - Assessment). SDV347875.

The exact route of the 1920s narrow guage railway line near the 1920s arsenic works is not known, but it possibly ran through the trackway between the arsenic condensers and the calciners, as the levels are quite even. However it is quite possible it ran to the south of the arsenic complex and then back, straight to the calciners. A new walkway track will be laid along the existing course of the path between the arsenic buildings, forming a protective layer to separate any arsenic contamination in the existing ground surface, and protect the possible tramway route. Other details: Figures 4-6.

Sources / Further Reading

SDV219136	Article in Serial: Pye, A. R. + Dixon, T.. 1989. The Arsenic Works at Devon Great Consols Mine, Tavistock. Proceedings of the Devon Archaeological Society. 47. Paperback Volume. 108.
SDV241758	Report - Assessment: Buck, C.. 2002. Devon Great Consols: Archaeological Assessment. Cornwall Archaeological Unit Report. 2002R069. Digital + A4. 73-74+ Figs 14,16,38.
	Linked documents:1
SDV276342	Cartographic: Ordnance Survey. 1907. 105 SW. Second Edition Ordnance Survey 6 inch Map. Map (Paper).
SDV319814	Report - non-specific: Dyer, M. J. + Manning, P. T.. 1998. Objective 5B: Lower Tamar Valley Recreation and Land Management Iinitiative: Cultural Heritage Appraisal. Exeter Archaeology Report. 98.60. A4 Stapled + Digital. 34.
SDV323598	Article in Serial: Richardson, P. H. G.. 1992. The Mines of Dartmoor and the Tamar Valley after 1913. British Mining. 44. A5 Paperback. 94-108.
SDV336689	Cartographic: Ordnance Survey. 1954. SX47SW. Ordnance Survey 6 inch map. Map (Paper).
SDV347875	Report - Assessment: Buck, C.. 2009. Devon Great Consols Mine (Arsenic Works), Devon. Impact Assessment Report. Historic Environment Projects, Cornwall Council Report. 2009R058. A4 Stapled + Digital. 25-26.

Associated Monuments

Associated Finds: none recorded

Associated Events

• EDV1286 - Devon Great Consols: Archaeological Assessment
• EDV1287 - Objective 5B: Lower Tamar Valley Recreation and Land Management Initiative: Cultural Heritage Appraisal
• EDV5334 - Impact Assessment of the Arsenic Works at Devon Great Consols Mine

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