The tablets, some in a fragmentary state, were small and rectangular and initially were assumed to be made of lead, although subsequent metallurgical analysis revealed that they are, in fact, made of lead alloyed with tin, with occasional traces of copper.
12.
Additionally, the metallurgical analysis found that alloying impurities were present such as non-metallic inclusions in the alloy of the shaft, in addition to the incorrectly performed heat treatment process, which further reduced the shaft's ability to carry the torsional loads as designed.
13.
In 2005, metallurgical analysis by Hideo Akanuma of iron fragments found at Kaman-Kaleh�y�k in 1994 and dating to " c " . 1800 BCE revealed that some of these fragments were composed of carbon steel; these currently form the world's earliest known evidence for steel manufacture.
14.
Its discovery prompted metallurgical analysis of this and other examples by Peter Northover, strongly suggesting that, rather than the accepted range of 1000 to 800 BC, these shields were manufactured in the 12th century BC . Carbon dating implied that the South Cadbury example was deposited in the mid 10th century BC.
15.
"We don't just look at it and say, ` Oh, it looks fine to me .'We actually do metallurgical analysis, cut up the metal pieces and we cut up the polyethylene pieces and we measure mechanical properties and we know about what they were at the time of manufacture and we look for changes,"
16.
He quickly became frustrated by the irrationality of the old common law under which only hoards of gold and silver coins received legal protection and, making use of new evidence from the metallurgical analysis of Roman coins, successfully argued that hoards of late Roman coins that contained a silver content as low as one or two per cent should be regarded as Treasure Trove.
