Jake Malloy, Regional Organiser of the OILC Union, has said that the slightest spark could trigger a massive explosion at the Elgin PUQ rig in the North Sea. He said that engineers were dealing with an unprecedented situation since gas is leaking from outside the casing walls.
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Mr Lai is an outspoken pro-democracy figure in Hong Kong.
Opposition supporters suspect election officials will manipulate the results of the vote in favour of incumbent president Alexander Lukashen
Emergency services were alerted about 6.45pm.