Era quarry Esgairgeiliog Ceinws. In 1916, two men Hugh Jones and Walter Jones from Esgairgeiliog Ceinws were buried alive for a long period at Era quarry. Fifty workmen from Aberllefenni quarry came to rescue them. They worked hard all through the night, then someone heard a tapping on the inside of the chamber. Eventually, a small passage was opened and the rescuers were able to pass through some food. Walter Jones asked for tobacco for his pipe and after being trapped inside for about 36 hrs, they were freed. Walter Jones had once been buried for a day by a fall at Ratgoed quarry and also survived. He also survived the terrible explosion at Mardy South Wales.