| 11. | Abundant discoveries of low technology iron slag bear witness to the long tradition of iron production in the area.
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| 12. | Near to the Alfoldean station the metalling was constructed from iron slag in a solid 30 cm thick mass.
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| 13. | Within the area pieces of metalworking as nails, knives or tools and more than 50k of iron slag were found.
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| 14. | There is evidence of bronze and iron smelting : furnaces, ore roasting pits and 200kg of iron slag were found.
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| 15. | Old black that had iron slag added during production to increase strength and opaqueness were at times broken in shipment.
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| 16. | The far side of Blue Herron Pond has pieces of iron slag scattered around the site of an old smith.
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| 17. | Later excavations found large amounts of iron slag, pottery, iron nails and ironworking tools in the southern part of the bailey.
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| 18. | Evidence for iron smelting, in the form of iron slag, and a small cemetery with three Roman cremations in pottery vessels were found.
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| 19. | Archeologists found traces of iron slag and coal, but only for a brief period before 14th century, before the arrival of the colonists.
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| 20. | Iron slag suggests that they had learned to use the local ores for smelting and other materials included copper alloy and glass were also used.
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