The Gleision Colliery mining accident was a mining accident which occurred on 15 September 2011 at the Gleision Colliery, a drift mine at Cilybebyll in Neath Port Talbot, in Wales. The accident occurred while seven miners were working with explosives on a narrow coal seam. Following a blasting operation into a separate disused flooded mine network to increase air-circulation, the tunnel in which the miners were working began to fill with water. Three of the miners escaped, with one being taken to hospital with life-threatening injuries, while the others were trapped underground. A search and rescue operation was launched to locate the four remaining miners, but they were found deceased the following day. The incident is the worst mining disaster to occur in Wales for three decades.
Four miners are killed in the Gleision Colliery mining accident in the Swansea Valley, Wales.
On September 15, in the year 2011, Four miners are killed in the Gleision Colliery mining accident in the Swansea Valley, Wales. This event is recorded as a Historical Events event in the history of September 15, one of 457 recorded events on this date across all of history.
Key Facts
- This event took place on September 15, 2011 (AD era).
- It is categorised as a Historical Events event in recorded history.
- Referenced in 2 Wikipedia articles.
- The event is associated with a specific geographical location (see map below).
- Wikipedia source last updated on 22 June 2026.
On This Date in History 457
This article draws on content from Wikipedia, available under CC BY-SA 4.0.
More on September 15
Consecration of pope Boniface IV following his approval by the Byzantine emperor.
Pope Boniface IV was the bishop of Rome from 608 to his death on 8 May 615. He was a member of the Benedictine order. Boniface had served as a deacon under Pope Gregory I, and lik…
Consecration of pope Boniface IV following his approval by the Byzantine emperor.
The Byzantine army under Belisarius enters Carthage following their victory over the Vandals at Ad Decimum.
The Byzantine army was the primary military body of the Byzantine armed forces, serving alongside the Byzantine navy. A direct continuation of the Eastern Roman army, shaping and …
The Byzantine army under Belisarius enters Carthage following their victory over the Vandals at Ad Decimum.
Signing of the Bahrain–Israel normalization agreement occurs in Washington, D.C., normalizing relations between Israel…
The Bahrain–Israel normalization agreement, officially Abraham Accords: Declaration of Peace, Cooperation, and Constructive Diplomatic and Friendly Relations, is an agreement to n…
Signing of the Bahrain–Israel normalization agreement occurs in Washington, D.C., normalizing relations between Israel…
The Parsons Green bombing takes place in London.
On 15 September 2017, at around 08:20 BST, an explosion occurred on a District line train at Parsons Green Underground station, in London, England. Thirty people were treated in h…
The Parsons Green bombing takes place in London.
Lehman Brothers files for Chapter 11 bankruptcy, the largest bankruptcy filing in U.S. history.
Lehman Brothers Holdings Inc. was an American global financial services firm founded in 1850. Before filing for bankruptcy in 2008, Lehman was the fourth-largest investment bank i…
Lehman Brothers files for Chapter 11 bankruptcy, the largest bankruptcy filing in U.S. history.
National Hockey League commissioner Gary Bettman announces lockout of the players' union and cessation of operations…
The National Hockey League is a professional ice hockey league in North America composed of 32 teams, 25 in the United States and 7 in Canada. The NHL is one of the major professi…
National Hockey League commissioner Gary Bettman announces lockout of the players' union and cessation of operations…
Comments 0
Sign in to join the discussion.