The original workings at Ratgoed date back to before 1840 when they are mentioned in the will of Horatio Nelson Hughes. In the late 1840s the quarry closed for a brief time, before re-opening in 1851. The quarry expanded in the 1850s and was being run by John Rowlands under the auspices of the Alltgoed Consols, a partnership that also owned the nearby Gaewern and Braich Goch quarries. During the early 1860s shareholder discontent lead to the dismissal of Rowlands, with the quarry now being run by the original owner Horatio Nelson Hughes. Rowlands continued to live at Ratgoed Hall after his dismissal, and was also the chairman of the Corris Railway.
Tramway era
Expansion
The fortunes of the quarry were improved significantly in 1864 when the Ratgoed Tramway opened, a gauge horse worked tramway, which was an autonomous branch of the newly opened Corris Railway. Connecting the remote quarry with the Corris Railway at Aberllefenni prompted significant expansion work at the quarry, enabling it to operate profitably until 1878; but in 1879 slate prices dropped throughout the industry and small, remote concerns like Ratgoed suffered in the downturn.
Decline and closure
The quarry continued production through the 1880s, but at a reduced annual output. Fortunes revived in the early 1890s, but towards the end of the century the accessible supplies of more profitable roofing slates at Ratgoed were running dry and the owners attempted to sell the business in 1897. By 1900 the remaining workforce was dismissed and the quarry closed.
Revived operation
During the first half of the twentieth century the quarry was reopened, but experienced fluctuating trade, and never flourished. The first reopening was in 1901 but it had to close again in 1903 as prices for slab slate fell again. In 1907 another restart was attempted and by 1911 more than 30 men were employed at Ratgoed. The advent of the First World War a year later again brought troubled times to the quarry and in 1918 only 6 men were employed. The quarry struggled on after the war. In 1924 the local company of Hall Harber & Thomas Ltd. purchased Ratgoed. They also owned the Llwyngwern quarry about to the south. Initially the new company doubled the workforce, but this declined steadily through the late 1920s. In 1930, control of the quarry returned to the Lewis family who had owned it prior to 1924. Work continued at a reduced output through the 1930s and the years of the Second World War, but in 1946 the quarry finally shut for good.
The site today
The former quarry owner's house, Plas Ratgoed, is the only remaining habitable building in the hamlet of Ratgoed, although nearby the houses Ffynnon Badarn, Dolgoed and Ceiswyn remain in use. Ty Cam, Ratgoed Terrace and Capel Ratgoed mostly remain standing, but roofless.
