What Caused the Fire That Shut Down Heathrow Airport?

What Caused the Fire That Shut Down Heathrow Airport?

Investigators combed through the burned-out remains of a power substation near London’s Heathrow Airport on Friday, seeking the cause of a spectacular blaze that shuttered Europe’s busiest travel hub for much of a day and raised broader questions about Britain’s energy infrastructure. Officials and energy experts said a fault in a transformer with 275,000 volts…

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