Ancient Monuments

History on the Ground

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

Blackpool Iron Furnace

A Scheduled Monument in Martletwy, Pembrokeshire (Sir Benfro)

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: 51.7953 / 51°47'43"N

Longitude: -4.8066 / 4°48'23"W

OS Eastings: 206557

OS Northings: 214470

OS Grid: SN065144

Mapcode National: GBR CS.Y4DJ

Mapcode Global: VH2P4.M4TJ

Entry Name: Blackpool Iron Furnace

Scheduled Date: 20 February 1997

Source: Cadw

Source ID: 3512

Cadw Legacy ID: PE484

Schedule Class: Industrial

Category: Ironworks

Period: Post Medieval/Modern

County: Pembrokeshire (Sir Benfro)

Community: Martletwy

Traditional County: Pembrokeshire


The monument comprises the remains of an iron smelting works which operated for a short time in the early seventeenth century. It was established under a lease of 1635 to George Mynne of Woodcote in Surrey during an important period in the development of blast furnace technology and in the economic reorganisation of the iron industry as it dispersed from its centre in the Weald. It appears to have ceased production within a few years and never to have been redeveloped for other uses. The visible remains now form irregular earthworks, but substantial remains of the blast furnace and other features are likely to survive. The site has been interpreted as containing leats and a waterwheel pit, the furnace site, platforms of associated buildings, and dumps of raw materials and slag.

The monument is of national importance for its potential to enhance and illustrate our knowledge and understanding of the development of the iron industry. An ironworks may be part of a larger industrial complex and their importance can further enhanced by their group value.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive. It is roughly is roughly 70m by 120m and bounded by a stream on the east and relict field boundaries on the south and west. The northern boundary is an east west line.

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.