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    • Object type: SLAG
    • Institution: NCL

  • Thumbnail image of NCL-75B237

Record ID: NCL-75B237
Object type: SLAG
Broad period: POST MEDIEVAL
County: Northumberland
Workflow stage: Awaiting validation Find awaiting validation
Copper alloy tap slag measuring 65.02mm long, 46.36mm wide, 51.58mm thick and weighs 152.7g. Very light in color with no evidence of corrosion or discoloration. Generally square in both plan and section with rounded edges and veins typical of tap slag.
Created on: Tuesday 15th June 2010
Last updated: Thursday 17th June 2010
Spatial data recorded.


  • Thumbnail image of NCL-7527F6

Record ID: NCL-7527F6
Object type: SLAG
Broad period: POST MEDIEVAL
County: Northumberland
Workflow stage: Awaiting validation Find awaiting validation
Copper alloy tap slag measuring 66.10mm long, 36.19mm wide, 11.85mm thick and weighing 62.1g. The slag is very long and thin with rounded edges and evidence of air holes. One side is very flat and more smooth than the other, suggesting that the molten copper alloy was poured onto a flat surface where it then cooled.
Created on: Tuesday 15th June 2010
Last updated: Thursday 17th June 2010
Spatial data recorded.


  • Thumbnail image of NCL-750457

Record ID: NCL-750457
Object type: SLAG
Broad period: POST MEDIEVAL
County: Northumberland
Workflow stage: Awaiting validation Find awaiting validation
Two pieces of iron slag, the larger measuring 187.9g, 61.62mm wide, 66.44mm long and 40.7mm thick. The smaller weighs 175.9g, 65.92mm wide, 68.20mm long and 45.14mm thick. They are both dark both dark brown in color, although covered in light brown dirty. Both are generally sub-circular in plain and section and have a very rough surface. The smaller of the two has some surface areas that are rounded which may indicate that it is part of a bloom or tap, but it is not clearly indicated.
Created on: Tuesday 15th June 2010
Last updated: Thursday 17th June 2010
Spatial data recorded.


  • Thumbnail image of NCL-997952

Record ID: NCL-997952
Object type: SLAG
Broad period: ROMAN
County: Northumberland
Workflow stage: Awaiting validation Find awaiting validation
Piece of lead casting waste, probably of Roman date. The object in plan is roughly rectangular with one end that is widened and relatively flat. Possibly waste from casting a vessle foot.
Created on: Thursday 1st May 2008
Last updated: Thursday 8th September 2011
Spatial data recorded.


  • Thumbnail image of NCL-9906F2

Record ID: NCL-9906F2
Object type: SLAG
Broad period: ROMAN
County: Northumberland
Workflow stage: Awaiting validation Find awaiting validation
Large piece of lead casting waste, probably of Roman date. The object in plan is roughly half of a circle with a thickening along the outer curved edge so that in section it is wedge shaped. One surface is relatively even in texture and may represent an impression from a ceramic crucible. Therefore this object may be waste from lead processing removed from a crucible or mould.
Created on: Thursday 1st May 2008
Last updated: Thursday 8th September 2011
Spatial data recorded.


  • Thumbnail image of NCL-906097

Record ID: NCL-906097
Object type: SLAG
Broad period: UNKNOWN
County: Darlington
Workflow stage: Awaiting validation Find awaiting validation
The object is a piece of slag of uncertain date. More specifically, this object is tap slag; it was formed during the smelting process when it became necessary to empty the furnace to keep the channels clear. This slag was removed by tapping the furnace, causing it to run out from a hole at the base of the furnace while it was hot. This forms the characteristic ropey-looking surface. The material is dark grey and dense. There are inclusions showing iron corrosion in the base of the object. Though it is not possible to date this object, it was recorded due its proximity to Dere St…
Created on: Wednesday 20th June 2007
Last updated: Thursday 24th February 2011
Spatial data recorded.


  • Thumbnail image of NCL-426585

Record ID: NCL-426585
Object type: SLAG
Broad period: ROMAN
County: Northumberland
Workflow stage: Awaiting validation Find awaiting validation
A piece of slag from metalworking. Probably Roman as it was found in association with two pieces of Roman pottery.
Created on: Monday 4th June 2007
Last updated: Thursday 24th February 2011
Spatial data recorded.


  • Thumbnail image of NCL-B70A27

Record ID: NCL-B70A27
Object type: SLAG
Broad period: ROMAN
County: County Durham
Workflow stage: Awaiting validation Find awaiting validation
This tap slag is dark grey in colour. There is a smooth maroon coating on the upper surface. This is broken up by a few small bubbles and rivulets. The texture indicates directionality of flow.
Created on: Tuesday 10th April 2007
Last updated: Thursday 24th February 2011
Spatial data recorded.


  • Image not taken

Record ID: NCL-B48B08
Object type: SLAG
Broad period: UNKNOWN
County: Northumberland
Workflow stage: Awaiting validation Find awaiting validation
An undated globule of argentiferous lead slag of unknown date. One side is relatively flat, suggesting the slag solidified on a flat surface. The overall shape is amorphous. Numerous circular corrosive copper alloy spots are found evenly on the surface, suggesting deposition next to a copper-alloy object. Two broken edges reveal a clean/pure lead interior with no air bubbles.
Created on: Thursday 10th August 2006
Last updated: Thursday 24th February 2011
Spatial data recorded. This findspot is known as 'Field 6', grid reference and parish protected.


  • Image not taken

Record ID: NCL-005396
Object type: SLAG
Broad period: ROMAN
County: Northumberland
Workflow stage: Awaiting validation Find awaiting validation
A very large lump of slag with solidified waste metal of varying quality. It is roughly 170mm in length and egg-shaped. It weighs over 1kg. The object was found in association with Roman pottery that had been exposed and deposited on the ground when a north facing enbankment slumped in the vicinity of Housesteads Roman fort.
Created on: Wednesday 14th June 2006
Last updated: Thursday 24th February 2011
Spatial data recorded.


  • Image not taken

Record ID: NCL-63F8C6
Object type: SLAG
Broad period: ROMAN
County: Northumberland
Workflow stage: Awaiting validation Find awaiting validation
A lump of slag foung just outside the standing remains of a vicus building 10 meteres south of Housesteads Roman fort. The slag was found near another large lump (1kg+) of slag approximately 2 meters away. Both lumps of slag were found near rabbit burrows.
Created on: Wednesday 19th April 2006
Last updated: Thursday 24th February 2011
Spatial data recorded.


  • Image not taken

Record ID: NCL-460F07
Object type: SLAG
Broad period: MEDIEVAL
County: County Durham
Workflow stage: Awaiting validation Find awaiting validation
Two fragments of iron slag, of unknown date. The fragments were a sample of two from a site where many hundreds were found. They were located in association with an area of burnt clay, perhaps suggesting an iron-smelting site.
Created on: Friday 26th March 2004
Last updated: Thursday 24th February 2011
Spatial data recorded.


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