Tennant Salt Mine, Trailcock Road, Eden, Carrickfergus, Co Antrim, BT38, **See General Comnents** is a listed building in the Mid and East Antrim local planning authority area, Northern Ireland.

Tennant Salt Mine, Trailcock Road, Eden, Carrickfergus, Co Antrim, BT38, **See General Comnents**

WRENN ID
outer-steeple-fog
Grade
Local Planning Authority
Mid and East Antrim
Constituency
East Antrim MP: Sammy Wilson (DUP)
Country
Northern Ireland
Irish grid reference
J 431 893
Coordinates
54.73131, -5.77932
Source
NI Environment Agency listing

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

Description

This is a former salt mine located on Trailcock Road, Eden, Carrickfergus, Co Antrim. The mine was worked using the traditional pillar-and-stall technique from the 19th century until the 1920s. In the 1980s, salt extraction involved pumping a brine solution, which eroded the supporting pillars. This led to a catastrophic collapse of the mine roof in October 1990. Following the collapse, the resulting surface depression has gradually enlarged and filled with water, submerging any surviving remains, such as winding gear. A partial survey only has been undertaken. The site was formerly and currently used as a factory. Due to its condition, listing is not appropriate.

Local climate

Tennant Salt Mine, Trailcock Road, Eden, Carrickfergus, Co Antrim, BT38, **See General Comnents** sits in a wetter-than-average part of the UK, with an average of 1,080 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.

It experiences an average of 5 freeze-thaw cycles a year, fewer than 97% 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 0.2°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

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