Hafod Colliery

Overview

A long-lived Denbighshire coalfield colliery near Ruabon, sunk in 1863 as the Ruabon New Colliery and also recorded as Hafod-y-bwch, struck by a fatal explosion in 1873 and worked until 1968.

History

Hafod Colliery was sunk in 1863 on ground at Esclusham near Ruabon, initially known as the Ruabon New Colliery to distinguish it from an earlier Ruabon Colliery, and also recorded under the name Hafod-y-bwch, the property of the Ruabon Coal Company. On 11 December 1873, an explosion killed five men: Timothy Prichard, 34, a dataller; David Williams, 37, the master dataller; Thomas Davis, 26, and William Wynne, 25, both colliers; and Anthony Boyer, 18, a filler. The colliery worked with locked safety lamps specifically because of its known gas risk, but the inquiry found that David Williams, the man in charge, had improperly opened his own lamp to inspect a newly built door intended to divert airflow and disperse accumulated gas -- the resulting exposed flame is what ignited the explosion. Ownership later passed to the Ruabon Coal & Coke Co. Ltd, which held the colliery from 1905 to 1915 and again from 1920 to 1946, and to the National Coal Board from 1947. Between 1966 and 1968, colliery management, the NUM and the officials' union NACODS, together with the local community, campaigned to save Hafod even after a new seam had been successfully developed, but area management announced its closure regardless, and the colliery closed in 1968. The site is now Bonc yr Hafod Country Park.

Workings

Worked with locked safety lamps because of a known risk of gas.

Closure

Closure came in 1968 despite a campaign by management, unions and the local community to save the colliery, which had included the successful development of a new seam.

What remains

The former colliery site is now Bonc yr Hafod Country Park.

The former spoil tip, locally known as 'Picnic Mountain' (Mynydd Picnic) and rising about 150 metres, was landscaped in the mid-1990s with some 80,000 trees planted; it now forms the wooded, 90-acre Bonc yr Hafod Country Park, part of the Johnstown Special Area of Conservation for its great crested newt population, and includes memorial sculptures to the colliery's workforce.

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.

Disasters & major incidents

• Hafod Colliery Explosion (1873)
  11 December 1873 · Explosion · 5 fatalities
  The colliery's own master dataller improperly opened his safety lamp to inspect a ventilation door, igniting an explosion that killed five men.

Recorded claims

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

• Hafod Colliery was sunk in 1863 as the Ruabon New Colliery, also recorded as Hafod-y-bwch, the property of the Ruabon Coal Company; ownership later passed to the Ruabon Coal & Coke Co. Ltd (1905-15, 1920-46) and the National Coal Board from 1947. ¹
• On 11 December 1873, an explosion killed five men -- Timothy Prichard, David Williams, Thomas Davis, William Wynne and Anthony Boyer -- after the master dataller, David Williams, improperly opened his own safety lamp to inspect a newly built ventilation door, despite the colliery otherwise working with locked lamps because of a known gas risk. ²
• Despite a 1966-68 campaign by management, unions and the local community, and the successful development of a new seam, the colliery closed in 1968; the site is now Bonc yr Hafod Country Park. ¹
• The colliery's spoil tip was landscaped in the mid-1990s and replanted with about 80,000 trees, becoming the 90-acre Bonc yr Hafod Country Park. 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) Denbighshire Collieries — Clwyd Family History Society
2. (secondary) Hafod-y-bwch Colliery Explosion - Ruabon - 1873 — Northern Mine Research Society
3. (secondary) Bonc yr Hafod — Wikipedia

Record created: 31 August 2026 · Last researched: 31 August 2026