This article is about the particular significance of the year 1970 to Wales and its people. Incumbents Secretary of State for Wales – George Thomas (until 20 June); Peter Thomas Archbishop of Wales – Glyn Simon, Bishop of Llandaff Archdruid of the National Eisteddfod of Wales – Tilsli Events 11 January – The last trolleybuses run on the Cardiff trolleybus system, the last such system in Wales. 23 May – The 120-year-old Britannia Bridge built by Robert Stephenson across the Menai Strait is destroyed by fire. 2 June – During the construction of the Cleddau Bridge, a cantilever collapses, resulting in the deaths of four workers. It is the last major bridge disaster in the UK. 18 June – In the UK General Election: S. O. Davies, having resigned from the Labour Party, retains his Parliamentary seat of Merthyr Tydfil, standing as an Independent Labour candidate. Gwynfor Evans loses his seat at Carmarthen. Jim Griffiths retires as MP for Llanelli, to be replaced by Denzil Davies. Nigel Birch retires from the House of Commons, to be created Baron Rhyl. 25 October – Pope Paul VI canonizes the Forty Martyrs of England and Wales, who include the priests Philip Evans and John Lloyd, John Jones, David Lewis, John Roberts, and the teacher Richard Gwyn. Dr Phil Williams becomes the first Chairman of Plaid Cymru. Arts and literature Robert Plant and Jimmy Page retreat to Bron-Yr-Aur to write songs for Led Zeppelin III. Awards Bernice Rubens wins the Booker Prize for The Elected Member. National Eisteddfod of Wales (held in Ammanford) National Eisteddfod of Wales: Chair – Tomi Evans, "Y Twrch Trwyth" National Eisteddfod of Wales: Crown – Bryan Martin Davies, "Darluniau ar Gynfas" National Eisteddfod of Wales: Prose Medal – withheld New books English language Ron Berry – So Long, Hector Bebb Tom Earley – The Sad Mountain Menna Gallie – You're Welcome to Ulster! Sally Roberts Jones – Turning Away John Ormond – Requiem and Celebration Harri Webb – The Green Desert Welsh language Marion Eames – Y Stafell Ddirgel J. Gwyn Griffiths – Cerddi Cairo John Robert Jones – Ac Onide R. Williams Parry – Yr Haf a Cherddi Eraill Gwynne Williams – Rhwng Gewyn ac Asgwrn T. Wilson Evans – Iwan Tudur Music Badfinger – No Dice (featuring the original recording of "Without You") John Cale – Vintage Violence Meic Stevens – Outlander Shakin' Stevens and the Sunsets