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The MTA’s new tunnel boring machine is about as exciting as it gets.

The transit agency’s board on Monday inked a nearly $2 billion contract for a private company to extend the Q line by three stations into East Harlem as part of the second phase of the Second Avenue subway .

The crown jewel of this contract: the delivery of an approximately 700-ton tunnel boring machine from Europe at the start of 2027. The behemoth is a marvel of technology that will simultaneously dig and build the tunnel between 120t

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