| Disgrifiad | (i) Extracts from the letters of Mr Ellis Pritchard, manager of the Pennant Vale Quarry, on the best way to develop the Cwm Trwsgwl workings (31 August, and 13 October, 1880).
(ii)Another report on the Cwm Trwsgwl Quarry, 26 April, 1882.
(iii)A third report on the same, 10 July, 1882, signed by Thomas Williams, Bryn Croesor, Penrhyndeudraeth.
(iv)A circular, dated 15 October, 1883 (with a postscript of the 17th.) signed by G.J.Gray, secretary of the Prince of Wales Slate Co.
(v & vi)Plans and sections of the quarry.
(vii) Return of slates and slabs raised from the quarries of Caernarvon and Merioneth in 1883. Total = 149,681 tons.
(viii)Report from the Prince of Wales Quarry Llanbedr, Merioneth by John Roberts, 28 December, 1865. |