Ancient Monuments

History on the Ground

This site is entirely user-supported. See how you can help.

Clyne Wood Arsenic & Copper Works

A Scheduled Monument in Mumbles (Y Mwmbwls), Swansea (Abertawe)

We don't have any photos of this monument yet. Why don't you be the first to send us one?

Upload Photo »

Approximate Location Map
Large Map »

If Google Street View is available, the image is from the best available vantage point looking, if possible, towards the location of the monument. Where it is not available, the satellite view is shown instead.


Latitude: 51.5995 / 51°35'58"N

Longitude: -4.0016 / 4°0'5"W

OS Eastings: 261462

OS Northings: 190858

OS Grid: SS614908

Mapcode National: GBR GX.D2L9

Mapcode Global: VH4KG.L2C5

Entry Name: Clyne Wood Arsenic & Copper Works

Scheduled Date: 24 February 1995

Source: Cadw

Source ID: 3734

Cadw Legacy ID: GM475

Schedule Class: Industrial

Category: Industrial monument

Period: Post Medieval/Modern

County: Swansea (Abertawe)

Community: Mumbles (Y Mwmbwls)

Built-Up Area: Swansea

Traditional County: Glamorgan


The monument comprises the remains of a smelting works dating to the industrial period. The smelting of non-ferrous metals was the leading industry in the Swansea area in the late 18th and early 19th century, and the region dominated world production of copper. This is the best preserved of any of its 50 or so former non-ferrous smelting works. It was built between 1825 and about 1840 and operated intermittently until 1860, after which the buildings were used as hay sheds. It exhibits a high level of survival of an early to mid 19th century layout owing to the absence of subsequent development. The remains await detailed interpretation, but the multiple terraces typical of such works can be seen, together with a tall ruined building, pillars for an open timber structure, furnaces, and a long system of hillside flues and condensors leading to a large tower (Ivy Tower), gothicized in the late 19th century as a folly for the adjacent Clyne Castle. At the downhill side of the site are small slag heaps and at the bottom of these the line of the Clyne Wood Canal, including what appears to be a small dock.

The monument is of national importance for its potential to enhance our knowledge of the industrial revolution. The monument retains significant archaeological potential and forms an important element in the wider south-Wales industrial landscape.

The area scheduled comprises the remains described and an area around them within which related evidence may be expected to survive.

Source: Cadw

Other nearby scheduled monuments is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.