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  2. Laguna Copperplate Inscription - Wikipedia

    en.wikipedia.org/wiki/Laguna_Copperplate_Inscription

    The Laguna Copperplate Inscription (Filipino: Inskripsyón sa binatbát na tansô ng Laguna) is an official acquittance (debt relief) certificate inscribed onto a copper plate in the Shaka year 822 (Gregorian A.D. 900). It is the earliest-known, extant, calendar-dated document found within the Philippines. [1]

  3. Copper extraction - Wikipedia

    en.wikipedia.org/wiki/Copper_extraction

    Copper concentrate is traded either via spot contracts or under long term contracts as an intermediate product in its own right. Often the smelter sells the copper metal itself on behalf of the miner. The miner is paid the price at the time that the smelter-refiner makes the sale, not at the price on the date of delivery of the concentrate.

  4. Tamil copper-plate inscriptions - Wikipedia

    en.wikipedia.org/wiki/Tamil_copper-plate...

    Tamil copper-plate inscriptions are copper-plate records of grants of villages, plots of cultivable lands or other privileges to private individuals or public institutions by the members of the various South Indian royal dynasties. [1] The study of these inscriptions has been especially important in reconstructing the history of Tamil Nadu. [2]

  5. List of countries by copper production - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Production trends in the top five copper-producing countries, 1950-2012. This is a list of countries by mined copper production. Copper ore can be exported to be smelted so that a nation's smelter production of copper can differ greatly from its mined production. See: List of countries by copper smelter production.

  6. Thanjavur Art Plate - Wikipedia

    en.wikipedia.org/wiki/Thanjavur_Art_Plate

    Thanjavur Art Plate is an artifact exclusively made in the Thanjavur region of Tamil Nadu, India. It is a circular plate consisting of silver, bronze, and copper embossed with figures of Hindu gods and goddesses at its center. [1] The artwork has been registered for protection under the Geographical indication of the Trade Related Intellectual ...

  7. Copper sheathing - Wikipedia

    en.wikipedia.org/wiki/Copper_sheathing

    Copper sheathing. Copper sheathing is a method for protecting the hull of a wooden vessel from attack by shipworm, barnacles and other marine growth through the use of copper plates affixed to the surface of the hull, below the waterline. It was pioneered and developed by the Royal Navy during the 18th century.

  8. Sohgaura copper plate inscription - Wikipedia

    en.wikipedia.org/wiki/Sohgaura_copper_plate...

    Present location. Sohgaura. Sohgaura. The Sohgaura copper plate inscription is an Indian copper plate inscription written in Prakrit in the Mauryan period Brahmi script. [1] It was discovered in Sohgaura, a village on the banks of the Rapti River, about 20 km south-east of Gorakhpur, in the Gorakhpur District, Uttar Pradesh, India. [2]

  9. Quilon Syrian copper plates - Wikipedia

    en.wikipedia.org/wiki/Quilon_Syrian_copper_plates

    The Kollam (Quilon) Syrian copper plates, also known as the Kollam Tarisappalli copper plates, document a royal grant issued by Ayyan Adikal, the chieftain of Kollam, to a Syrian Christian merchant named Mar Sapir Iso in Kerala, India. The inscription is engraved on six copper plates in Old Malayalam or early Middle Tamil, using Vattezhuthu ...