Braich Goch slate quarry, Corris. A page from Julia Gunn's scrap book about Braich Goch slate quarry, Corris. The site was landscaped, obliterating the workings, mill and buildings in the 1970's. The main road now runs over the site of the mills. The Corris Craft centre and King Arthur's Labyrinth now sit above the former waste tip and mill. My dad Ken Rowlands remembers being told when he was a boy that the electrical switchboards on the Titanic ship were made of Welsh slate from Braich Goch quarry. The local author, the late Sara Eade researched and wrote a very good book about the Corris slate quarries, including Braich Goch called "Within These Hills" a study of Corris Uchaf.