. "unofficial strike in 1969" . "UK miners' strike (1969)" . . "unofficial strike of 1969" . . . "UK miners' strike (1969)" . . "An unofficial strike amongst British mineworkers" . "unofficial strike" . . . "unofficial strike began in 1969" . . . "an unofficial strike" . . . . . . "Unofficial strike by mineworkers over pay of surface workers" . "widespread unofficial strike" . "miners' strike of October 1969" . "1969" . . "1969 miners' strike in Britain" .