Tower Colliery

Overview

Tower Colliery, on the edge of Hirwaun in the Cynon Valley, closed as uneconomic in 1994 only for 239 of its own miners to buy it back with their redundancy money — reopening it as Britain's first worker-owned coal mine and running it profitably for another thirteen years, making it the last deep mine in Wales when it finally closed in 2008.

History

Coal had been worked around Hirwaun Common since around 1805, and the first drift mine bearing the Tower name was sunk in 1864, taking its name from a nearby folly, Crawshay's Tower, built in 1848. Up to fourteen coal seams were worked across the colliery's lease over its history, and a shaft sunk in 1941 reached a depth of 160 metres; a further drivage, Tower No. 3, was driven in 1958 to serve as the main intake airway. Under nationalised ownership as part of the National Coal Board / British Coal, Tower closed on 22 April 1994 on the grounds that it would be uneconomic to continue, threatening the loss of one of the Cynon Valley's largest employers. Led by NUM branch secretary Tyrone O'Sullivan, 239 miners each pledged £8,000 of their redundancy payouts to buy the colliery outright for around £2 million, forming the Tower Employees Buy-Out (TEBO). Tower reopened on 3 January 1995 under the miners' own company, Goitre Tower Anthracite, as the United Kingdom's first worker-owned deep coal mine. The buyout proved a striking success: in its first full year the workforce produced around 450,000 tonnes of high-grade anthracite and returned a pre-tax profit of over £4 million, working the colliery's Seven Feet/Five Feet seam, which by then offered around 1.3 metres of anthracite within a worked section of 1.65 metres. Tower finally closed on 25 January 2008, after thirteen years of profitable worker ownership, once its accessible coal reserves were exhausted — the last deep coal mine remaining in Wales.

Geology

The colliery worked coal seams of the South Wales Coalfield, a Carboniferous sequence of alternating sandstones, mudstones and coal seams folded into the broad Cynon Valley syncline; by the buyout period only the high-quality anthracite of the Seven Feet/Five Feet seam remained economically workable.

Geological setting: Sedimentary Beds and Seams (well documented example)

Workings

Up to fourteen seams were developed across the colliery's 221-hectare lease over its working life. A shaft sunk in 1941 reached 160 metres, and Tower No. 3, driven in 1958, served as the mine's main intake airway; a coal washery was added on the surface in the mid-1980s.

Closure

Tower closed as uneconomic under British Coal in 1994, before reopening under worker ownership in 1995 and finally closing for good on 25 January 2008 once its accessible reserves were exhausted.

What remains

The colliery site has been redeveloped as Zip World Tower, an adventure/zip-line attraction built around the former pit's winding gear and headframe.

The colliery's winding gear and headframe survive on site, incorporated into the Zip World Tower attraction; further structures are recorded by Coflein, the Royal Commission on the Ancient and Historical Monuments of Wales.

Abandoned workings can be dangerous — unstable ground, uncapped shafts, flooding and bad air are common even where a site looks safe from the surface. This entry describes history and general location only; it is not an access guide.

Recorded claims

Individual factual claims, each attached to the source(s) that support it below. Where sources disagree, both are kept.

• 239 miners each pledged £8,000 of their redundancy payouts to buy the colliery for around £2 million, forming the Tower Employees Buy-Out and reopening it on 3 January 1995 as the UK's first worker-owned deep coal mine. ^1,2
• In its first full year under worker ownership the colliery produced around 450,000 tonnes of high-grade anthracite and returned a pre-tax profit of over £4 million. ¹
• A shaft sunk in 1941 reached 160 metres depth, and Tower No. 3, driven in 1958, served as the mine's main intake airway; up to fourteen seams were worked across the colliery's history. ^1,3

Photographs & further reading

This page doesn't try to reproduce everything — these are the best original sources found for this mine.

Images

Sources

1. (secondary) Tower Colliery — Wikipedia
2. (secondary) Tower - Coal and Community case study — University of Wolverhampton
3. (primary) Tower/Hirwaun Common/Upcast/Bute/River Level and associated mine plans — British Geological Survey / The Coal Authority

Record created: 23 August 2026 · Last researched: 23 August 2026