A tweet from the New York City Fire Department says that the two workers are trapped on the 45th floor - one level short of the roof.
NBC New York reports that 60 fire officers are attending the scene.
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A man's body has been discovered in the sea off the Kent coast.
Cooler and cloudier for much of the UK with showers or longer spells of rain.
Donald Trump has said North Korea showed disrespect to its major ally China after it fired a short-range ballistic missile.