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Cast in the shape of a peck, or dou in Chinese, each ingot weighs just over 1 pound (0.45 kg). Ten blocks made up one unit called a small bundle, and 40 blocks made up one large bundle. Details of tin production in early Malacca were recorded in the 1436 book Description of the Starry Raft by Fei Xin, a translator of Admiral Zheng He.
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]
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This is a list of articles about prime numbers. A prime number (or prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. By Euclid's theorem, there are an infinite number of prime numbers. Subsets of the prime numbers may be generated with various formulas for primes.
Aluminium ingot after ejection from mold Pouring molten gold into a mold at the La Luz Gold Mine in Siuna, Nicaragua, about 1959.. An ingot is a piece of relatively pure material, usually metal, that is cast into a shape suitable for further processing. [1]
Gunmetal ingot is a related alloy in which the zinc is replaced by 2% lead; this makes the alloy easier to cast but it has less strength. [2]Modified gunmetal contains lead in addition to the zinc; it is typically composed of 86% copper, 9.5% tin, 2.5% lead, and 2% zinc.
[1]: 137 More than 160 copper oxhide ingots, 62 bun ingots, and some of the tin oxhide ingots have incised marks typically on their rough sides. [1]: 146 Some of these marks—resembling fish, oars, and boats—relate to the sea, and they were probably incised after casting, when the ingot was received or exported. [1]: 146
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