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The standard gold bar held and traded internationally by central banks and bullion dealers is the Good Delivery bar with a 400 ozt (12.4 kg; 27.4 lb) nominal weight. However, its precise gold content is permitted to vary between 350 ozt (10.9 kg; 24.0 lb) and 430 ozt (13.4 kg; 29.5 lb). The minimum purity required is 99.5% gold.
Troy weights were first used in England in the 15th century and were made official for gold and silver in 1527. [1] The British Imperial system of weights and measures (also known as Imperial units ) was established in 1824, prior to which the troy weight system was a subset of pre-Imperial English units .
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion.The ton of TNT is a unit of energy defined by convention to be 4.184 gigajoules (1 gigacalorie), [1] which is the approximate energy released in the detonation of a metric ton (1,000 kilograms) of TNT.
An Attic weight talent was about 25.8 kilograms (57 lb). Friedrich Hultsch estimated a weight of 26.2 kg, [25] and Dewald (1998) offers an estimate of 26.0 kg. [26] An Attic talent of silver was the value of nine man-years of skilled work, according to known wage rates from 377 BC. [27]
2012 world gold output (in kilograms) Trends in five of the top seven gold-producing countries. This is a list of countries by gold production in 2022. [1] Until 2006, South Africa was the world's largest gold producer.
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[6] [7] In the United States, metric ton is the name for this unit used and recommended by NIST; [2] an unqualified mention of a ton typically refers to a short ton of 2,000 lb (907.2 kg) and to a lesser extent to a long ton of 2,240 lb (1,016 kg), with the term tonne rarely used in speech or writing.
World's gold from 1845 to 2013, in tonnes (metric tons in the U.S.) World's gold holdings per capita, in grams Gold holdings are the quantities of gold held by individuals, private corporations, or public entities as a store of value, an investment vehicle, or perceived as protection against hyperinflation and against financial and/or political upheavals.