China begins drilling one of world's deepest holes in hunt f

Narrow 11,000-metre shaft will reach the Earth’s crust to study internal structures as China seeks to explore new frontiers

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Russia , Xinjiang , Jiangxi , China , Chinese , Sun Jinsheng , Wang Chunsheng , Chinese Academy Of Engineering , Xinhua , Sinopec , China National Petroleum Corporation , Chinese Academy , Kola Superdeep Borehole ,