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    Carbon dating gold

    It was identified as the world's oldest marijuana stash.

    A barrage of tests proves that the marijuana possessed potent psychoactive properties and casts doubt on the theory that the ancients only grew the plant for hemp in order to make clothing, rope, and other objects. Lead author Ethan Russo told Discovery News that the marijuana "is quite similar" to what's grown today.

    The uses of carbon, which is a non-metallic element, can be understood better once the properties of the element are clear.

    Carbon is one of the most stable elements known to man.

    The quality that highlights its many uses is that, this element can combine with almost any other element and form a variety of useful compounds.

    As of 2016, the world's largest gold producer by far was China with 463.7 tonnes.

    The carbon in their bodies at the time of their death will remain in their bodies until they decompose, or if they become fossilized, then forever. This allows scientists to look at the amount of decay in a fossil’s radioactive carbon and determine a relative date.

    Radiocarbon dating is only effective for objects and fossils that are less than 50,000 years old.

    Romans used hydraulic mining methods, such as hushing and ground sluicing on a large scale to extract gold from extensive alluvial (loose sediment) deposits, such as those at Las Medulas.

    Mining was under the control of the state but the mines may have been leased to civilian contractors some time later.

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