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Metallurgy in China has a long history, with the earliest metal objects in China dating back to around 3,000 BCE. The majority of early metal items found in China come from the North-Western Region (mainly Gansu and Qinghai, 青海). China was the earliest civilization to use the blast furnace and produce cast iron. [1]
One of the fragments was made of bloomery iron rather than meteoritic iron. [37] [38] The earliest iron artifacts made from bloomeries in China date to end of the 9th century BC. [39] Cast iron was used in ancient China for warfare, agriculture and architecture. [9] Around 500 BC, metalworkers in the southern state of Wu achieved a temperature ...
From the Anglo-Saxon īsern which is derived from Proto-Germanic isarnan meaning "holy metal" or "strong metal". · Symbol Fe is from Latin ferrum, meaning "iron". Cobalt (Co) 27 Kobold: German "goblin" From German Kobold, which means "goblin". The metal was named by miners, because it was poisonous and troublesome (polluted and degraded by ...
World tin production, 1946. During the Middle Ages, and again in the early 19th century, Cornwall was the major tin producer. This changed after large amounts of tin were found in the Bolivian tin belt and the east Asian tin belt, stretching from China through Thailand and Laos to Malaya and Indonesia.
Although, the advantages of copper were many, the material was too soft to find large scale usefulness. Through experimentation or by chance, additions to copper lead to increased hardness of a new metal alloy, called bronze. [3] Bronze was originally composed of copper and arsenic, forming arsenic bronze. [4]
[a] [b] It is possible aluminium-containing alloys were produced in China during the reign of the first Jin dynasty (266–420). [c] After the Crusades, alum was a commodity of international commerce; [9] it was indispensable in the European fabric industry. [10] Small alum mines were worked in Catholic Europe but most alum came from the Middle ...
Overall, the U.S. trade deficit of all goods and services fell last year by almost 19%, the largest drop since 2009, as Americans bought less foreign oil and fewer China-made phones, toys and ...
This is the first clear reference in China of the gimbal, although there is a hint in the writing of a Western Han dynasty Chinese poet, writer, and musician, Sima Xiangru (179–117 BC), that this device existed in the 2nd century BC (i.e., "the metal rings burning perfume"). [249]