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The China–Russia Crude Oil Pipeline (CRCOP) was built to transport Siberian crude oil across 1030km of frozen ground. The Chinese portion of the CRCOP crosses 441km of discontinuous permafrost zones along the eastern flanks of the Da Xing'anling (Hinggan) Mountains. Significant thaw settlement of some of the pipeline foundation soils has occurred since the pipeline began operating in January 2011...
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