Clwyd Metal Mines Survey

Talargoch Clive Shaft

Geology
Carboniferous Limestone.

Workings
The Clive Shaft (SJ05647998) and the Drawing Shaft to the south-west of it occupied the parcel of land mapped as Lletty Mwyn on early maps (Mostyn MSS 1799). The site formed the south-western limit of the mine workings. The Clive Shaft was sunk 1842-45; it remains brick-lined to the north side of the 100" Grade II Listed Cornish Engine House. The shaft ceased operating in 1883. To the west are the grassed over foundations of the boiler house. Drawing Shaft remains fenced off among trees. The area generally comprises of grassed over spoil mounds.

Transport
The site was served to the eastern perimeter by the mineral railway.

Power
The Scheduled Engine House is built of dressed limestone. The three-storey house and its very fine architectural features survives on very solid foundations. The internal features include the base of the 100" cylinder and the pit for the plug rods of the engine. The house bears a date stone for 1860. The Clive Shaft was originally worked with a 50" hydraulic engine; due to its inefficiency the 100" steam engine was installed for pumping, built by the Haigh Foundry, Wigan, with a beam weighing 85 tons. The boiler house that served the engine had seven 'egg-end' boilers. In 1885, the engine was sold to Westminster colliery, Gwersyllt. A horizontal engine was also used for the capstan. The new 1844 leat was costructed to serve the hydraulic engine originall installed at Clive Shaft to drain the western end of the mines. An aquaduct of cast iron pipes took the watercourse westwards to the shaft from a small reservoir. The leat began its course from a sluice on the Afon Ffyddion being to the west of Pandy Mill Farm at SJ07007920, cut under the Dyserth-Trelawnyd Road by a tunnel and continued around the contours of the hill towards Dyserth Castle.

Processing
The dressing floors were to the north of the Clive Shaft area at Maesyrerwddu.

Other features
No evidence.