Photographer: Yuki Iwamura/Bloomberg
Venezuela's oil is also of poorer quality than its Saudi equivalent. Its sour, heavy crude is difficult to extract and refine, while its high sulphur content makes it corrosive to pipelines. A resurgence of Venezuela's industry could pose problems for Canada, which produces similarly viscous oil and exports much of it to the US, but analysts reckon the risk is minor.
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ВсеСтильВнешний видЯвленияРоскошьЛичности。同城约会对此有专业解读
We have picked out six that have never been on display. You can see where they were found on the HS2 route map below - then scroll further down to see the objects and read about their history.