John Purser Griffith [full inscription unknown] Poulaphouca Hydro Station, Poulaphouca by National Committee for Commemorative Plaques in Science & Technology Colour: This plaque is purple, white and green glass claret orange purple clear bronze grey stone red slate wood blue black brass multicoloured pink brushed metal green maroon film cell green and red Belgian Blue Stone red and black yellow terracotta marble brown silver white gold Wikimedia: Flickr: [geolocate this address]
