Prime Minister opens 'Marble Arch Colliery'. The 'Minor Comes to Town' exhibition, staged by the National Coal Board and the Ministry of Fuel and Power, was open this morning (Thursday) at the Marble Arch Pavilion by the Prime Minister. Showpiece of the exhibition is the 'Marble Arch Colliery', a full-scale replica of a mine, complete with machinery, safety devices, and a 'coalface' with miners at work. Photo shows, a scene down the 'Marble Arch Colliery' after the opening ceremony this morning (Thursday). Mr Shinwell, Minister of Fuel and Power (left) and Lord Hyndley, Chairman of the National Coal Board, (in background) chat with George Richmond, a miner from Motherwell. 11 September 1947