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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.
A typical European casting alloy contains 94% tin, 1% copper and 5% antimony. A European pewter sheet would contain 92% tin, 2% copper, and 6% antimony. Asian pewter, produced mostly in Malaysia, Singapore, and Thailand, contains a higher percentage of tin, usually 97.5% tin, 1% copper, and 1.5% antimony. This makes the alloy slightly softer.
The Wieland Group is a manufacturer of semi-finished products in copper and copper alloys. The group of companies with Wieland-Werke AG as the ultimate parent company is organized into four business units. Since its foundation, the company’s headquarters has been located in Ulm. The Wieland Group has production sites in Asia, Europe and the USA.
When the contact is very fine grained (VFG), the electrical conductivity is much higher than a normal piece of copper tungsten. [6] Copper tungsten is a good choice for a vacuum contact due to its low cost, resistance to arc erosion, good conductivity, and resistance to mechanical wear and contact welding.
The Balinese copperplate inscription or Sembiran inscription is a collection of ten copper plate inscriptions, which were found in the village of Sembiran, Tejakula district, Buleleng Regency, on the northern part of Bali island. [ 1][ 2] All inscription plates have a date, which is between 922 and 1181 CE, so they include more than 200 years. [ 3]
[8] [11] It was engraved in a 17.5-by-12-inch (440 mm × 300 mm) plate made of copper. The copperplate and seal weigh 24 pounds (11 kg). [2] There is a seal centered atop the copperplate. The seal extends about 5 inches into the main copperplate, dividing the first two lines of the script on each side of the plate.
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.
The Nidhanpur copperplate inscription of the 7th-century Kamarupa king Bhaskaravarman gives a detailed account of land grants given to Brahmins. It records land grants to more than two hundred vaidika brahmanas belonging to 56 gotras. [1] The copper plates were found mostly in Panchakhanda pargana (now in Bangladesh) where, according to ...