To complicate the issue: I remember being on the Coity Mountain (overlooking Blaenavon) in the dusk in app 1950-55 and seeing a rich glow on the horizon to the west. But it wasn't the sun setting, so we lads reckoned it must have come from a steel works in an adjacent valley. We never thought at the time to ascertain whether this was plausible. I doubt whether the glow could have been seen from right down in the town, but it was probably visible from higher up on the eastern side of Blaenavon, too . Glyn Hatherall Ealing, London glyn@hatherall.org.uk scarrott@one-name.org