What is "aberpergwm"

Aberpergwm is the site of a colliery in the Vale of Neath near Glynneath in south Wales.

The drift mine was reopened in 1996 after being closed by British Coal in 1985. It is owned by Energybuild, a private company now wholly owned by Walter Energy of the United States (as of April 2011). The mine has probable recoverable reserves of 7.6 million tonnes of coal, which is a high-grade anthracite. Most was delivered to Port Talbot Steelworks owned by Tata Steel. The colliery suspended working the multi-entry system in the 18 ft seam and concentrated on the development of the 9 ft but in July 2015 ceased production and was placed on a "care and maintenance" basis.

The ruined, derelict Aberpergwm House stands on the grounds, the former seat of the Williams family of Aberpergwm.