Bundle of agreements to demolish buildings on the Dyffryn Estate, including Dyffryn House, 1931, stack and boiler house at New Primrose Pit, Rhos, 1931, buildings at Colliery Yard, Bryncoch, 1931 and 1940, buildings at Old Primrose Colliery, Rhos, 1932, and building at Tawe Vale Colliery, Rhos, 1932. 1930-1940