HeritageGateway - Home
Site Map
Text size: A A A
You are here: Home > > > > Devon & Dartmoor HER Result
Devon & Dartmoor HERPrintable version | About Devon & Dartmoor HER | Visit Devon & Dartmoor HER online...

See important guidance on the use of this record.

If you have any comments or new information about this record, please email us.

HER Number:MDV4313
Name:Lower Yealm Blowing Mill


Blowing or stamping mill on the east bank of the River Yealm. This site is included in the local list of Nationally Important Dartmoor sites.


Grid Reference:SX 617 635
Map Sheet:SX66SW
Admin AreaDartmoor National Park
Civil ParishCornwood
DistrictSouth Hams
Ecclesiastical ParishCORNWOOD

Protected Status

  • SHINE: Ruined remains of a blowing mill on the east bank of the River Yealm in an area of streamworking

Other References/Statuses

  • National Monuments Record
  • National Record of the Historic Environment: 442255
  • Old DCC SMR Ref: SX66SW/66
  • Old DCC SMR Ref: SX66SW/66/1
  • SHINE Candidate (Yes)

Monument Type(s) and Dates

  • TIN MILL (Early Medieval to Post Medieval - 1066 AD to 1750 AD (Between))

Full description

Unknown source reference (Unattributed Sites and Monuments Register Entry). SDV154762.

There are some mouldstones in the ruins near Yealm steps. One is inside the upper blowing house just inside the east wall. In the lower blowing house are one large double mouldstone perfect, two moulds on different levels, communicating by a channel. The sides of the moulds slope downwards. There is a small trying mould on the rim near the latter, and another mouldstone, also double, broken, a few feet west. The channel connecting the moulds has an unknown purpose; may be the result of a failure of the granite under the heat of the molten tin, and the consequent spalling of the stone.
Mouldstone A (mould A (top (length 380 millimetres, width 230 millimetres), bottom (length 305 millimetres, width 170 millimetres), depth 100 millimetres), ingot max weight 51 kilograms), mould B (top (length 445 millimetres, width 280 millimetres) bottom (length 370 millimetres, width 178 millimetres), depth 150 millimetres, ingot max weight 84kilograms), sample mould (length 100 millimetres, width 64 millimetres, depth 19 millimetres)
Mouldstone B (total mould (top (length 430 millimetres, width 255 millimetres), bottom (length 305 millimetres, width 170 millimetres), depth 152 millimetres, weight 88.5 kilograms), broken mould (top (length 406 millimetres, width 235 millimetres), bottom (length 320 millimetres, width 170 millimetres), depth 140 millimetres), weight 77 kilograms).

Kelly, T., 1866, Celtic remains on Dartmoor, 46 (Article in Serial). SDV154696.

Kelly, T., 1866-1867, Celtic remains on Dartmoor, 125 (Article in Serial). SDV154701.

Burnard, R., 1888 - 1889, On the Track of the 'Old Men', Dartmoor, 109-111 (Article in Serial). SDV154694.

Other details: Figure ?.

Crossing, W., 1890 - 1891, Western Antiquary, 177 (Monograph). SDV154702.

Worth, R. H., 1890 - 1894, The Erme, Yealm and Torry, 178-179 (Article in Serial). SDV154695.

Rowe, S., 1896, A Perambulation of the Forest of Dartmoor, 152-3 (Monograph). SDV249697.

Falcon, T. A., 1902-1903, Dartmoor Mining, 226 (Article in Serial). SDV154698.

Crossing, W., 1912 (1965), Crossing's Guide to Dartmoor, 407 (Monograph). SDV320981.

Other details: Marked as 1912 in original HER record.

Worth, R. H., 1940, The Dartmoor Blowing House, 219-220, 240 (Article in Serial). SDV154693.

Lower blowing mill, Yealm Steps. The dimensions of the wheelpit are not ascertainable. No mortarstones exist to be seen. The building is in two compartments. There are two mouldstones, each with two moulds, internal length 8.5 meters, width 5.9 meters, wall 0.72 meters thick.

National Monuments Record, 1976, NMR SX6263, 1 (Aerial Photograph). SDV154704.

Ordnance Survey Archaeology Division, 1977, SX66SW31 (Ordnance Survey Archaeology Division Card). SDV154697.

The blowing house is built hard against the valley side. It consists of two rooms, in fair condition. There are two damaged mould stones in the northern room. The leat can be traced for about 150 meters from Yealm Steps to a point above the northern room, but the wheelpit cannot now be distinguished.

Greeves, T. A. P., 1981, List of Known Devon Tin Mills c1450 - c1750 (Report - non-specific). SDV319826.

Blowing/stamping? mill (undocumented). Field evidence. Other details: No. 92.

Royal Commission on the Historical Monuments of England, 1985, Aerial Photograph Project (Dartmoor) - Dartmoor Pre-NMP (Cartographic). SDV319854.

Visible and recorded.

Greeves, T. A. P., 1990, An Assessment of Dartmoor Tinworking, 38 (Report - Assessment). SDV343684.

Lawrence, M., 1998, Comment on mouldstones (Personal Comment). SDV154705.

Mortarstone seen in river during site visit with H. Starkey in the 1980s. Recently observed in slightly different position.

Gerrard, S., 2004, List of Sites Remaining to be Considered for Designation on Dartmoor (Un-published). SDV345444.

This site was considered for designation as a Scheduled Ancient Monument during the Monument Protection Programme. The programme ended before the entire list of sites was successfully scheduled so this is included on a local list of Nationally Important Sites.

Ordnance Survey, 2010, MasterMap (Cartographic). SDV344030.

Sources / Further Reading

SDV154693Article in Serial: Worth, R. H.. 1940. The Dartmoor Blowing House. Transactions of the Devonshire Association. 72. 219-220, 240.
SDV154694Article in Serial: Burnard, R.. 1888 - 1889. On the Track of the 'Old Men', Dartmoor. Transactions of the Plymouth Institute. 10. 109-111.
SDV154695Article in Serial: Worth, R. H.. 1890 - 1894. The Erme, Yealm and Torry. Transactions of the Plymouth Institute. 11. 178-179.
SDV154696Article in Serial: Kelly, T.. 1866. Celtic remains on Dartmoor. Transactions of the Devonshire Association. 1. 46.
SDV154697Ordnance Survey Archaeology Division Card: Ordnance Survey Archaeology Division. 1977. SX66SW31. Ordnance Survey Archaeology Division Card. Card Index.
SDV154698Article in Serial: Falcon, T. A.. 1902-1903. Dartmoor Mining. Devon and Cornwall Notes and Queries. 2. 226.
SDV154701Article in Serial: Kelly, T.. 1866-1867. Celtic remains on Dartmoor. Journal of the Royal Institution of Cornwall. 2. 125.
SDV154702Monograph: Crossing, W.. 1890 - 1891. Western Antiquary. Western Antiquary. 10. 177.
SDV154704Aerial Photograph: National Monuments Record. 1976. NMR SX6263. National Monuments Record Aerial Photograph. Photograph (Paper). 1.
SDV154705Personal Comment: Lawrence, M.. 1998. Comment on mouldstones. Not Applicable.
SDV154762Unattributed Sites and Monuments Register Entry: Unknown source reference.
SDV249697Monograph: Rowe, S.. 1896. A Perambulation of the Forest of Dartmoor. Perambulation of the Forest of Dartmoor. Unknown. 152-3.
SDV319826Report - non-specific: Greeves, T. A. P.. 1981. List of Known Devon Tin Mills c1450 - c1750. List of Known Devon Tin Mills c1450 - c1750. 35. Unknown.
SDV319854Cartographic: Royal Commission on the Historical Monuments of England. 1985. Aerial Photograph Project (Dartmoor) - Dartmoor Pre-NMP. Royal Commission on the Historical Monuments of England Aerial Photograph P. Cartographic.
SDV320981Monograph: Crossing, W.. 1912 (1965). Crossing's Guide to Dartmoor. Crossing's Guide to Dartmoor. Hardback Volume. 407.
SDV343684Report - Assessment: Greeves, T. A. P.. 1990. An Assessment of Dartmoor Tinworking. Digital. 38.
SDV344030Cartographic: Ordnance Survey. 2010. MasterMap. Ordnance Survey. Map (Digital). [Mapped feature: #91582 ]
SDV345444Un-published: Gerrard, S.. 2004. List of Sites Remaining to be Considered for Designation on Dartmoor. Digital.

Associated Monuments

MDV27914Related to: Streamworks on the River Yealm, Stall Moor (Monument)

Associated Finds

  • FDV3174 - MOULDSTONE (XIV to XVII - 1400 AD to 1699 AD)

Associated Events: none recorded

Date Last Edited:May 7 2021 2:22PM