I haven't looked at the old thread, I'll just post what I meant to post anyway. Maybe the two complement each other:

Thanks for posting the lyrics, Helen. Hope you don't mind a few improvements:

Verse 1:
Since they fell 'neath Robens' axe all the lads have got the sack
(Robens, Alfred (Lord Robens of Woldingham). Born 1910. Chairman Vickers Ltd, since 1971. Director of the Bank of England since 1966, of Times Newspapers Ltd since 1967. Union of Distributive and Allied Workers' official 1935-1945. Labour M.P. for Wansbeck 1945-50, for Blyth 1950-60. Min[ister] of Labour and National Service 1951. Chairman of the National Coal Board 1961-1971, of which he published an autobiographical memoir, 'Ten Year Stint', in 1972. Member of N.E.D.C. [National Economic Development Council] since 1962.) This makes the song pre-1972. I hadn't realised that until now!

Verse 2:
For the pit-wheels they are stoppin'

Verse 3:
Treherbert and Treorchy, Tonypandy and Tynewydd
Ystrad Rhondda, Ton Pentre all are due
(and are all Welsh place-names. It took me a while to ferret them out although I lived in South Wales for a year, too many years back, and my fellow teachers did their best to improve my Welsh!) - Susanne