Wheal Clifford, Powder House, Part of the United Mines is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 3 February 1986. Gunpowder storage house.

Wheal Clifford, Powder House, Part of the United Mines

WRENN ID
shifting-cinder-pine
Grade
II
Local Planning Authority
Cornwall
Constituency
Camborne and Redruth MP: Perran Moon (Lab)
Country
England
Date first listed
3 February 1986
Type
Gunpowder storage house
Address
Wheal Clifford, Powder House, Part of the United Mines, Gwennap
OS grid reference
SW 755 415
Coordinates
50.23132, -5.14909
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Wheal Clifford Powder House, part of the United Mines, is a gunpowder storage house built in the early to mid 19th century. It is constructed from lime-washed killas rubble and features timber lintels and a scantle slate roof with a finial. The building has a round single-cell plan and is a single storey in height. There is a doorway to the north, which is now boarded up, and a window to the northeast. This powder house is a remarkably intact example of a very rare building type and is located away from other structures to minimize the risk of explosion.

Local climate

Wheal Clifford, Powder House, Part of the United Mines receives an average of 850 mm of rain a year. This makes it wetter than 59% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 84% of listed buildings.

It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 3 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

Sign in or create a free account to unlock:

  • No EPC on record for this property
  • No sale records on file
  • No related consent applications matched
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
Create free account

Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.

Similar buildings

The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.

See all similar buildings →

this building   1 similar   nearby listed buildings

Nearby listed buildings

  1. Cusvey Mines, Engine House Part of the Consolidated Mines Grade II 416 m
  2. Cusvey Mines, Chimney at Sw757419se Part of the Consolidated Mines Grade II 441 m
  3. Cusvey Mines, Engine House at SW 757419 SE Part of the Consolidated Mines Grade II 452 m
  4. United Mines, Engine House at SW 746414 SW Grade II 641 m
  5. Building at About 3m North of Cottage to Middle of Group Grade II 792 m
  6. Cottage to East of Group Grade II 793 m
  7. Cottage to Middle of Group Grade II 800 m
  8. Cottage to West Grade II 807 m
  9. Bridge at SW 752423 SE Grade II 819 m
  10. Building at About 20m South of Cottage to West Grade II 828 m