I remember a song to the 'The Drunken Sailor' tune which had the chorus 'Burn Burn Burn the Bastards'. The bastards being Ian Macgregor and Margaret Thatcher. This was truly terrifying when sung in a confined space. It's also the only one I remember from picket lines. There were a couple of LPs came out just after the strike. Dave Burns from south Wales put out one called 'Last Pit in The Rhondda'. I also believe that Siwsan George of Mabsant did a version of 'Coal Comes from the Rhondda (I'll be there)'. There was also one from the Durham Area as well, but you probably know about that already.