Record ID: GLO-05105E
Object type: SLAG
Broad period: UNKNOWN
County: Gloucestershire
Workflow stage: Awaiting validation
Five fragments of bloomery slag that appear to have been produced from the tapping process. All display smooth molten ridges and channels on the face characteristic of runs of solidified molten taped slag. Where broken the core is seen to be dense but filled with abundant, small bubbles and cavities. These fragments measure 1, 35mm by 33mm 2, 50mm by 35mm 3, 70mm by 50mm 4, 42mm by 30mm 5, 115mm, by 80mm
Created on: Tuesday 12th March 2024
Last updated: Tuesday 12th March 2024
Spatial data recorded.

Record ID: NLM-B793C8
Object type: SLAG
Broad period: UNKNOWN
County: North Lincolnshire
Workflow stage: Awaiting validation
Metalworking debris or slag. Four small fragments of a vesicular and lightweight material, resembling a solidified ‘skim’ from metalworking. Suggested date: Unknown, Roman to Post-Medieval Combined Weight: 7.54gms
Created on: Tuesday 13th February 2024
Last updated: Tuesday 13th February 2024
Spatial data recorded. This findspot is known as 'Broughton', grid reference and parish protected.

Record ID: SWYOR-C0CDAC
Object type: SLAG
Broad period: UNKNOWN
County: Wakefield
Workflow stage: Awaiting validation
A piece of copper alloy casting waste, metal working debris or slag of unknown period, Bronze Age to Post-Medieval in date (about 2000 BC - AD 1800). In shape, the waste is an irregularly shaped mass which is also irregular in section. The surface is rough and granular. There are some black inclusions and a brown rounded pellet. The waste has a mid green mottled patina. Measurements; length 43.9mm, width 41.7mm, thickness 11.4mm, weight 47.0g.
Created on: Monday 8th January 2024
Last updated: Monday 15th April 2024
Spatial data recorded.

Record ID: IOW-40D571
Object type: SLAG
Broad period: POST MEDIEVAL
County: Isle of Wight
Workflow stage: Awaiting validation
A possible Post Medieval cast lead alloy slag drop, c.AD 1700-1800. This is a piece of lead alloy in the shape of a tear-drop, with a face reverse face and a convex obverse face. There are no markings or decoration on either face.
Created on: Wednesday 27th September 2023
Last updated: Thursday 12th October 2023
Spatial data recorded. This findspot is known as 'Isle of Wight', grid reference and parish protected.

Record ID: IOW-092CDE
Object type: SLAG
Broad period: MEDIEVAL
County: Isle of Wight
Workflow stage: Awaiting validation
A piece of cast lead alloy slag of unclear date, 11th-18th century AD. This object is a piece of slag, formed when molten lead fell during the casting process onto a firmer surface. The metal dripped down on one side and the main body of the item has formed from several drops landing on top of each other. Lead was a common metal throughout the Medieval and early Post Medieval period and was used for many items, from tokens and gaming pieces to seal matrices, pilgrim badges, and other religious items. This piece of slag was most likely lost during the casting process; lead is eas…
Created on: Tuesday 14th March 2023
Last updated: Wednesday 29th March 2023
Spatial data recorded. This findspot is known as 'Isle of Wight', grid reference and parish protected.

Record ID: IOW-8E640E
Object type: SLAG
Broad period: POST MEDIEVAL
County: Isle of Wight
Workflow stage: Awaiting validation
Possible piece of tin alloy slag of Post Medieval date, 1500-1900. This piece is a concave fragment of tin alloy metal with multiple inclusions and casting flaws visible in the broken sides. The irregular material and shape suggest this was a piece of slag dropped during casting.
Created on: Tuesday 31st January 2023
Last updated: Tuesday 14th February 2023
Spatial data recorded. This findspot is known as 'Isle of Wight', grid reference and parish protected.

Record ID: BERK-6BAB81
Object type: SLAG
Broad period: ROMAN
County: Windsor and Maidenhead
Workflow stage: Awaiting validation
Various pieces of copper-alloy slag/waste totaling 122.88g. Two of the pieces appear to have some form and might have been objects for recycling.
Created on: Thursday 7th July 2022
Last updated: Friday 29th July 2022
Spatial data recorded.

Record ID: SWYOR-B89422
Object type: SLAG
Broad period: UNKNOWN
County: Wakefield
Workflow stage: Awaiting validation
A large piece of iron tap slag of uncertain date, probably Roman to Post Medieval, about AD 43 - 1600. It is dense, magnetic and black to purple in colour with some rusty patches. It forms a thick plate which is rough and irregular on the lower face and sides, with characteristic runs of solidified molten metal across the top face. Both ends of the piece are broken. In cross-section it is D shaped. Measurements are; length 1694mm, width 1035mm, thickness 453mm. Tap-slag is slag that is 'tapped' from a bloomery furnace. This is carried out during smelting so as to allow the long c…
Created on: Monday 23rd May 2022
Last updated: Tuesday 21st June 2022
Spatial data recorded.

Record ID: CAM-C4D96B
Object type: SLAG
Broad period: UNKNOWN
County: Cambridgeshire
Workflow stage: Awaiting validation
An assemblege of eight pieces of slag. Seven of these pieces are undiagnostic slag (metal working waste). See Historic England: Archaeometallurgy, Guidelines for Best Practice 2015, p.23. Pieces A, F & G (see image) have a strong magnetic reaction and will jump off of a table top to attach to a strong magnet held near-by. Pieces C & E have a weaker magnetic reaction, moving slightly if a strong magnet is held near-by but not moving to attach themselves to the magnet. All of the above have a mid to dark grey colour, dull and roughened texture. Pieces B & D (see image) …
Created on: Tuesday 5th April 2022
Last updated: Wednesday 3rd August 2022
Spatial data recorded.

Record ID: WAW-E56447
Object type: SLAG
Broad period: UNKNOWN
County: Warwickshire
Workflow stage: Awaiting validation
Three irregular fragments of copper metal working waste (slag) or fuel ash, of probable Roman to Post Medieval dating (c. AD 43 to AD 1800). The largest fragment is quite heavy, though the two smaller fragments are slightly lighter and appear to have the remains of silver in their mix. The process of working ore to produce copper or iron has not changed much from the Iron Age to the Medieval period. In addition these objects having been recovered from land producing objects ranging from the Roman through to the Post Medieval period, therefore these pieces of slag could date from…
Created on: Tuesday 1st March 2022
Last updated: Wednesday 2nd March 2022
Spatial data recorded.

Record ID: IOW-BAEB1C
Object type: SLAG
Broad period: MEDIEVAL
County: Isle of Wight
Workflow stage: Awaiting validation
Roman to Medieval period copper alloy slag. This object is a single piece of cast copper alloy slag, formed during the casting process. This was found alone, which makes it difficult to precisely date.
Created on: Tuesday 15th February 2022
Last updated: Monday 27th June 2022
Spatial data recorded. This findspot is known as 'Isle of Wight', grid reference and parish protected.

Record ID: NARC-E38244
Object type: SLAG
Broad period: IRON AGE
County: Northamptonshire
Workflow stage: Awaiting validation
A piece of Slag, Clinker or other similar industrial by-product of uncertain date (800 BC - AD 1800). The object is rough and irregular, with bubbles and cavities, and high density. The object is a brown/green colour with obvious metallic particles. Length: 29.79mm, Width: 24.95mm, Thickness: 11.81mm, Weight: 16.9g
Created on: Friday 12th November 2021
Last updated: Friday 12th November 2021
Spatial data recorded.

Record ID: SWYOR-9DB4FA
Object type: SLAG
Broad period: UNKNOWN
County: Calderdale
Workflow stage: Awaiting validation
A piece of possible slag or other industrial by-product such as dross, clinker, fuel ash, of unknown date, possibly Bronze Age to Modern, 2200 BC - AD 1900. It is a shiny light grey material, light in weight for its size, very soft (can be scratched with a finger nail), and it has a soapy feel. One face is irregular with many rounded particles, some of which are magnetic, and small holes. The other faces are smooth and fine grained, with conchoidal fractures. The piece is 41.3mm long, 33.3mm wide and 16.2mm thick. 14.5g.
Created on: Thursday 28th October 2021
Last updated: Wednesday 1st December 2021
Spatial data recorded.

Record ID: WAW-58F319
Object type: SLAG
Broad period: UNKNOWN
County: Warwickshire
Workflow stage: Awaiting validation
Three irregular fragments of copper metal working waste (slag) or fuel ash, of probable Iron Age to Late Medieval dating (c. 800 BC to AD 1600). The largest fragment is quite heavy, though the two smaller fragments are relatively light suggesting that minimal metal is present within the matrix.  The process of working ore to produce copper or iron has not changed much from the Iron Age to the Medieval period. In addition these objects having been recovered from land producing objects ranging from the prehistoric through to the Post Medieval…
Created on: Wednesday 7th July 2021
Last updated: Thursday 23rd June 2022
Spatial data recorded.

Record ID: KENT-6F2BE1
Object type: SLAG
Broad period: UNKNOWN
County: Kent
Workflow stage: Awaiting validation
Two fragments of undated ferrous slag. The fragments are irregularly shaped with a slight patches of vitreous areas. Both frags have some rusty patches, one is much darker than the other perhaps due to increased carbon. Fragment 1: 37.49mm high, 35.39mm wide, 27.46mm thick and 31g in weight Fragment 2: 48.85mm long, 34.45mm wide, 21mm thick and 26.54g in weight. Both frags found in the vicinity of metalworking objects including ingots and crucible.
Created on: Monday 26th April 2021
Last updated: Wednesday 14th July 2021
Spatial data recorded.

Record ID: NARC-A90E88
Object type: SLAG
Broad period: ROMAN
County: Northamptonshire
Workflow stage: Awaiting validation
A piece of lead alloy Slag or Metal working debris of unknown date (AD 100-1400). The object is rough and irregular, with bubbles and cavities one side is predominantly flat, indicating that it was resting on an irregular surface while it was cooling. Lead metalworking waste; scatter of pieces of lead waste, suggestive of lead working having been carried out on the site. Unfortunately these are very difficult to date out of context as waste pieces have no indicative features to help with dating. The metal is cream in colour with a predominantly smooth patina. Length: 1…
Created on: Friday 22nd January 2021
Last updated: Friday 4th June 2021
Spatial data recorded.

Record ID: WMID-2A9619
Object type: SLAG
Broad period: UNKNOWN
County: Worcestershire
Workflow stage: Awaiting validation
Eleven (11) irregular fragments of iron and copper metal working waste (slag) or fuel ash, of Iron Age to Late Medieval dating (800 BC to AD 1600). All three fragments are light for their size, which would suggest that minimal metal is present within the matrix. All have a honeycomb structure, formed of solidified air bubbles. All together the fragments weigh 80.0 g. The process of working ore to produce copper or iron has not changed much from the Iron Age to the Medieval period, so these pieces of slag could date from any time between the Iron Age (80…
Created on: Tuesday 11th August 2020
Last updated: Wednesday 7th June 2023
Spatial data recorded.

Record ID: NARC-C28198
Object type: SLAG
Broad period: IRON AGE
County: Northamptonshire
Workflow stage: Awaiting validation
A piece of Slag, Clinker or other similar industrial by-product of uncertain date (800 BC - AD 1800). The object is rough and irregular, with bubbles and cavities, and it has low density. The object is a grey green colour with obvious metallic particles. Length: 34.57mm, Width: 18.87mm, Thickness: 7.20mm, Weight: 18.0g The object is dark brown in colour
Created on: Thursday 6th February 2020
Last updated: Friday 7th February 2020
Spatial data recorded.

Record ID: LIN-1D5739
Object type: SLAG
Broad period: POST MEDIEVAL
County: Lincolnshire
Workflow stage: Awaiting validation
Copper alloy manufacturing or casting waste. Lump of copper alloy melt or slag irregular in shape and green in colour. Base sub-circular 24mm diameter, top misshaped 15mm width, height 21mm, Weight 30.4g. Suggested date, Unknown,Roman to Post-Medieval,
Created on: Friday 17th January 2020
Last updated: Tuesday 14th April 2020
Spatial data recorded. This findspot is known as 'Near Caistor', grid reference and parish protected.

Record ID: NLM-D6D0A3
Object type: SLAG
Broad period: POST MEDIEVAL
County: North Lincolnshire
Workflow stage: Awaiting validation
Iron slag. A small dense irregular bubbled lump with both rounded and sub-crystalline elements on its corroded orange-brown surface; magnetic. The mass suggests significant presence of ferrous metal and/or other dense components. Suggested date: probably Post-Medieval, 1600-1900 Length: 72.8mm, Width: 53mm, Thickness: 39mm, Weight: c.295gms
Created on: Monday 21st October 2019
Last updated: Monday 21st October 2019
Spatial data recorded. This findspot is known as 'Low Burnham', grid reference and parish protected.