Six Bells Colliery was a colliery located in Six Bells, Abertillery, Gwent, Wales. On 28 June 1960 it was the site of an underground explosion which killed 45 of the 48 miners working in that part of the mine. It is now the site of the artistically acclaimed Guardian memorial to those events, designed by Sebastian Boyesen; although the memorial primarily commemorates those who died at Six Bells, it is dedicated to all mining communities wherever they may be.