Prince of Wales Quarry Ynysypandy slab mill Ynys y Pandy Slate Mill B/W Ynysypandy Remote and abandoned Dinorwig Compressor Blondin winder Coats Killaloe Slate Quarries Saw tables Table incline Compressor Rails across the void Slate and rust Tilghman's Patent Sand Blast Co Table Incline, Dinorwic Australia mill Dinorwic blondin Saddlestone mill Dinorwic A bit of Dinorwic Caban Toppled Slate ropeway Ynysypandy slab mill Dinorwic top incline Penrhyn Quarries Slate remains Australia Mill A face at the window Whites of Widnes Bwlch-y-Slaters Slate world Ropeway remains Slate roofs Table incline Kirkstone Green Slate Quarries Coniston ropeway Slate saw