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The ingots are believed to have been made before 1000 BC, during the later stages of the British Bronze Age. The site was designated under the Protection of Wrecks Act on 24 November 1993. The wreck is a Protected Wreck managed by Historic England. The ingots found here are an important source of knowledge for prehistoric tin. [1]
Evidence of tin trade in the Mediterranean can be seen in a number of Bronze Age shipwrecks containing tin ingots such as the Uluburun off the coast of Turkey dated 1300 BC which carried over 300 copper bars weighing 10 tons, and approximately 40 tin bars weighing 1 ton. [44]
Ingot molds are tapered to prevent the formation of cracks due to uneven cooling. A crack or void formation occurs as the liquid to solid transition has an associated volume change for a constant mass of material. The formation of these ingot defects may render the cast ingot useless and may need to be re-melted, recycled, or discarded.
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A possible official stamp has been identified on the Carnington tin ingot. [34] A number of tin ingots have been found in Roman contexts, such as 42 found in a wreck at Bigbury Bay in 1991–92. [35] [36] A site in the Erme Valley, Devon, shows sediment aggregation in late Roman and Post-Roman times due to tin mining on Dartmoor. [37]
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The company produces approximately 10,000 tons of cu-anodes, 1,500 tons of lead-ingots and 800 tons of tin-ingots per month. It is the leading producer of pure tin in Europe. All Metallo-Chimique final products are made out of scrap and by-products.