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Gold is currently considered the heaviest monoisotopic element. Bismuth formerly held that distinction until alpha-decay of the 209 Bi isotope was observed. All isotopes of gold are either radioactive or, in the case of 197 Au, observationally stable, meaning that 197 Au is predicted to be radioactive but no actual decay has been observed. [4]
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Concepts for high-speed rail (HSR) in Indonesia were first seriously contemplated in 2008, leading to discussions at Asian Investment Summit in 2013, and detailed plans being set forth in 2015. [23] The plan to start construction of the Jakarta-Bandung HSR was announced by the Indonesian government in July 2015, after the Chinese President and ...
China says it has discovered the world’s largest known deposit of gold, estimated to be worth over $80bn (£63bn).. The deposit at the Wangu goldfield in central China could yield more than ...
Exploration of orogenic gold began after the year 1840 when the source of nearby placer gold deposits was being investigated, after which large scale mining operations began in the 1990s. [ 45 ] The Mother Lode Homestake is located in South Dakota, USA, and is a historic mine which was host to orogenic gold held within a banded iron formation ...
The Gyeongbu high-speed railway, also known as Gyeongbu HSR, is South Korea's first high-speed rail line from Seoul to Busan. KTX high-speed trains operate three sections of the line: on 1 April 2004, the first between a junction near Geumcheon-gu Office station, Seoul and a junction at Daejeonjochajang station north of Daejeon, and a second between a junction at Okcheon station, southeast of ...
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HSR Corridor of Northeast China, consisting of the Beijing-Shenyang & Harbin-Dalian and the Panjin-Yingkou spur. 350: 1700: 2007-08-23: 2021-01-22 [3] Beijing–Shenyang section (Beijing–Shenyang high-speed railway) HSR from Beijing to Shenyang via Chengde, Fuxin and Chaoyang: 350 700 March 2014 [4] 2018-12-29 (Chengde South–Shenyang section)