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: 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: 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: NLM-F9B5F4
Object type: SLAG
Broad period: UNKNOWN
County: Lincolnshire
Workflow stage: Awaiting validation
Iron slag. Two small lumps of ferrous metalworking debris, both vesicular, possibly joining, and possibly with fragmentary traces of a relatively smooth and rounded base (cf. NLM-F9AB44); and with angular lumps apparent on their uneven upper surfaces. Suggested date: Unknown, Late Iron Age to Early Medieval, 100 BC - AD1000 Weight: 119.38gms
Created on: Monday 16th September 2019
Last updated: Tuesday 17th September 2019
Spatial data recorded. This findspot is known as 'near Market Rasen', grid reference and parish protected.

Record ID: NLM-F9AB44
Object type: SLAG
Broad period: UNKNOWN
County: Lincolnshire
Workflow stage: Awaiting validation
Iron slag. A lump of ferrous metalworking debris with a rounded base, of vesicular composition and including small angular lumps or facets on its uneven upper surface; probably broken on all its side edges. Possibly from the bowl-shaped base of a small iron smelting furnace. Too heavy to weigh with the available equipment: in excess of 500gms. Suggested date: Unknown, Late Iron Age to Early Medieval, 100 BC - AD1000 Length: 96mm, Width: 83.5mm, Thickness: 55mm, Weight: not measured
Created on: Monday 16th September 2019
Last updated: Tuesday 17th September 2019
Spatial data recorded. This findspot is known as 'near Market Rasen', grid reference and parish protected.

Record ID: NARC-5D9702
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 portions. Length: 35.8mm, Width: 27.6mm, Thickness: 17.4mm, Weight: 13.7g.
Created on: Tuesday 16th April 2019
Last updated: Wednesday 17th April 2019
Spatial data recorded.

Record ID: NARC-5FDAFF
Object type: SLAG
Broad period: UNKNOWN
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: 24.73mm, Width: 17.58mm, Thickness: 6.79mm, Weight: 9.1g.
Created on: Tuesday 16th October 2018
Last updated: Wednesday 14th November 2018
Spatial data recorded.

Record ID: NARC-AC858D
Object type: SLAG
Broad period: IRON AGE
County: Northamptonshire
Workflow stage: Awaiting validation
Two pieces of slag, clinker or other similar industrial by-product of uncertain date (800 BC - AD 1800). The pieces are rough and irregular, with bubbles and cavities, and have a low density. Two are a grey green colour with obvious metallic particles. Length: 57.63mm, Width: 34.06mm, Thickness: 30.24mm, Weight: 60.8g Length: 49.37mm, Width: 31.13mm, Thickness: 21.77mm, Weight: 28.1g
Created on: Wednesday 8th August 2018
Last updated: Wednesday 8th August 2018
Spatial data recorded.

Record ID: NARC-E01D35
Object type: SLAG
Broad period: ROMAN
County: Gloucestershire
Workflow stage: Awaiting validation
A group of 5 pieces of Slag of probable Roman date (AD 43-410). The objects are irregular ovates and sub-rectangles in plan with irregular mottled surfaces. The slag is associated with Roman finds in the area. The slag has a high metal content and is heavy, brown in colour with areas of lighter brown in colour. 1 Length: 44.31mm, Width: 37.49mm, Thickness: 19.49mm, Weight: 46.3g. 2 Length: 26.22mm, Width: 26.43mm, Thickness: 19.19mm, Weight: 18.5g. 3 Length: 20.72mm, Width: 14.77mm, Thickness: 9.41mm, Weight: 2.9g. 4 Length: 22.72mm, Width: 17.78mm, Thickness: 6.19mm, Wei…
Created on: Wednesday 11th April 2018
Last updated: Wednesday 11th April 2018
Spatial data recorded.

Record ID: LANCUM-7D9197
Object type: SLAG
Broad period: MEDIEVAL
County: Lincolnshire
Workflow stage: Awaiting validation
Iron Age to Post Medieval bloomery slag. It is weakly magnetic suggesting it still has a reasonably high iron content, suggestive of the more inefficient recovery rate of the Early Medieval and early Medieval. Bloomeries were used for the production of iron until the 1700s in the North West of England of some other areas, but by and large they were being superseded by the more efficient blast furnaces by the 1500s. Dates to between c800 and c1700 AD. The length is 18mm, the width is 17mm, thickness 9mm, and the weight 6.02g.
Created on: Wednesday 6th December 2017
Last updated: Friday 9th March 2018
Spatial data recorded.

Record ID: NARC-C98DD3
Object type: SLAG
Broad period: UNKNOWN
County: Northamptonshire
Workflow stage: Awaiting validation
A group of four pieces of Slag or Clinker like material of unknown date (AD 43-1700). The material is probably an industrial by-product. It is dark grey to black, some pieces are reflective, and often appearing laminated. The material is light in weight for its size. Length: 45.28mm, Width: 35.28mm, Thickness: 8.21mm, Weight: 19.3g. Length: 40.92mm, Width: 30.35mm, Thickness: 21.81mm, Weight: 41.0g. Length: 41.07mm, Width: 30.53mm, Thickness: 18.12mm, Weight: 23.2g. Length: 29.04mm, Width: 29.56mm, Thickness: 3.97mm, Weight: 4.6g.
Created on: Monday 17th July 2017
Last updated: Monday 17th July 2017
Spatial data recorded.

Record ID: DENO-1EE549
Object type: SLAG
Broad period: UNKNOWN
County: Derbyshire
Workflow stage: Awaiting validation
A piece of slag, clinker or similar by-product of uncertain date. It has cavities and inclusions and patches of a dark, shiny vitrious looking material. The object is 48 mm long, 42 mm wide and 23 mm thick, It weighs 54.6 g
Created on: Tuesday 8th November 2016
Last updated: Thursday 1st December 2016
Spatial data recorded.

Record ID: SWYOR-206CE4
Object type: SLAG
Broad period: UNKNOWN
County: Doncaster
Workflow stage: Awaiting validation
A piece of slag, clinker or other similar industrial by-product of unknown date. It is smooth and soft, with one perfectly flat face and one more irregular. There are bubbles and cavities with grey material trapped inside the black. The object is not magnetic. It is 29.9mm long, 18.1mm wide and 7.7mm thick. 3.43g.
Created on: Tuesday 12th May 2015
Last updated: Wednesday 13th May 2015
Spatial data recorded.

Record ID: SWYOR-2049F6
Object type: SLAG
Broad period: UNKNOWN
County: Doncaster
Workflow stage: Awaiting validation
A piece of slag, clinker or other similar industrial by-product of unknown date. It is rough and irregular, with bubbles and cavities. It is a grey green colour with obvious shiny metallic particles. There are patches of orange deposits. The object is not magnetic. It is 82.4mm long, 62.4mm wide and 37.8mm thick. 216g.
Created on: Tuesday 12th May 2015
Last updated: Wednesday 13th May 2015
Spatial data recorded.

Record ID: SWYOR-4B57FC
Object type: SLAG
Broad period: UNKNOWN
County: Lincolnshire
Workflow stage: Awaiting validation
A piece of slag, clinker or other by-product of industry or burning of unknown date. It has a low mass for its size, and where the internal structure is visible, it is grey, hard and made up of small bubbles. It is 82.3mm long, 67.4mm wide and 35.7mm thick. 63.5g.
Created on: Wednesday 20th August 2014
Last updated: Wednesday 20th August 2014
Spatial data recorded.

Record ID: SWYOR-FA48D1
Object type: SLAG
Broad period: UNKNOWN
County: Doncaster
Workflow stage: Awaiting validation
A tiny fragment of slag, clincker or similar industrial by-product. Its structure is bubbly and vesicular and it has a light density. It is dark grey.
Created on: Thursday 17th April 2014
Last updated: Sunday 19th May 2019
Spatial data recorded.

Record ID: SWYOR-E67333
Object type: SLAG
Broad period: UNKNOWN
County: Doncaster
Workflow stage: Awaiting validation
Three pieces of slag, clinker or other similar industrial by-product. The pieces are rough and irregular, and of light density. They are dark grey or black, and lustrous in places. They do not respond to a magnet.
Created on: Wednesday 16th April 2014
Last updated: Thursday 1st May 2014
Spatial data recorded.

Record ID: SWYOR-D527D3
Object type: SLAG
Broad period: UNKNOWN
County: Doncaster
Workflow stage: Awaiting validation
Two pieces of slag, clinker or other similar industrial by-product. The pieces are rough and irregular, with bubbles and cavities. One has a low density and is grey with some undulating dark grey layers and some areas of orange colouration. The other is low in mass but glassy with conchoidal fractures. There is a lump of orange stone on one face, and a shiny, purple layer on the other face, with the rets being a dark grye to black colour. Both react to a magnet.
Created on: Tuesday 15th April 2014
Last updated: Thursday 1st May 2014
Spatial data recorded.

Record ID: SWYOR-D3C971
Object type: SLAG
Broad period: UNKNOWN
County: Doncaster
Workflow stage: Awaiting validation
Three pieces of slag, clinker or other similar industrial by-product. The pieces are rough and irregular, with bubbles and cavities, and have a low density. Two are a grey green colour with obvious metallic particles. The other is orange, even less dense, and some patches of metal deposit. All three react faintly to a magnet.
Created on: Tuesday 15th April 2014
Last updated: Thursday 1st May 2014
Spatial data recorded.