It continues to produce crushed slate on a limited scale under the ownership of the nearby Llechwedd quarry.

In 1861 the Maenofferen Slate Quarry Co. Ltd. was incorporated, led by Sir William Fothergill Cooke and Mr.

The company leased a wharf at Porthmadog in 1862 and shipped 181 tons of finished slate over the Ffestiniog Railway the following year.

During the nineteenth century the quarry flourished and expanded, extending its workings underground and further downhill towards Blaenau Ffestiniog.

In 1908 the company leased wharf space at Minffordd, installing turntables and siding to allow finished slates to be transshipped to the standard gauge railway there.