Barony Colliery

Overview

An Ayrshire colliery remembered today for one thing above all: a 180-foot steel headgear so unusual in its design that only one other was ever built, and this is the only one left.

History

William Baird & Company began sinking the first pit at Barony, near Auchinleck, in 1907, though it took until 1912 for coal to be reached and worked. The colliery passed into National Coal Board ownership at nationalisation and was substantially modernised in the 1950s, when a new headgear — No. 3 Headgear, universally known as the A-Frame — was built in 1954 to serve a new shaft. Barony worked on for a further three and a half decades before closing in 1989.

Geology

Barony worked seams of the Ayrshire coalfield, part of the Central Belt of Scotland's Carboniferous coal measures.

Workings

No. 3 Headgear, the A-Frame, is a four-legged welded steel frame some 180 feet high carrying four pulley wheels, built in 1954. It is one of only two headgears of this specific design ever built in Britain, and the only one to survive.

Closure

Barony closed in 1989 along with much of the rest of the Ayrshire coalfield as deep mining contracted nationally.

What remains

Most of the colliery has been cleared, but the A-Frame headgear, the winding engine houses, a generating station and a water-treatment works were given category B listed status in 1990. The A-Frame itself was extensively restored in 2007 at a cost of over a million pounds, with funding from Historic Scotland and the Heritage Lottery Fund, and was reopened by the Duke of Rothesay (later King Charles III) in January 2008. It now stands as a mining heritage monument, floodlit and visible for miles across the Ayrshire countryside.

The restored A-Frame headgear, winding engine houses, a former generating station and a water-treatment works, all category B listed.

Redevelopment

Preserved as the Barony A-Frame Mining Heritage Site, maintained by a dedicated trust.

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.

• William Baird & Company began sinking Barony Colliery in 1907; coal was reached and worked from 1912. ¹
• No. 3 Headgear, the A-Frame, is a four-legged welded steel frame about 180 ft high built in 1954 — one of only two of this design ever built in Britain and the only survivor. ¹
• The colliery closed in 1989. ¹
• The A-Frame, winding engine houses, generating station and water-treatment works were category B listed in 1990; the A-Frame was restored in 2007-08 at a cost of over £1 million and reopened by the Duke of Rothesay. ^1,2

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) Barony A Frame — Wikipedia
2. (secondary) Barony A-Frame Mining Heritage Site — Britain Express

Record created: 24 August 2026 · Last researched: 24 August 2026