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Video: Giant Tunnel Boring Machine Completes 7 Extension - Photo Gallery

arrow left Video: Giant Tunnel Boring Machine Completes 7 Extension
Slide 1 of 3
A "sandhog" crawls through the tunnel boring machine that just cut through the bedrock underneath the Port Authority bus terminal.

<p>A "sandhog" crawls through the tunnel boring machine that just cut through the bedrock underneath the Port Authority bus terminal.</p>

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<p>A "sandhog" crawls through the tunnel boring machine that just cut through the bedrock underneath the Port Authority bus terminal.</p>
Gothamist
Slide 2 of 3
Sandhog Tommy Gramza, left, a tunnel boring machine mechanic sits on the machine's gripper shield after another tunnel boring machine cut through the bedrock.

<p>Sandhog Tommy Gramza, left, a tunnel boring machine mechanic sits on the machine's gripper shield after another tunnel boring machine cut through the bedrock.</p>

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<p>Sandhog Tommy Gramza, left, a tunnel boring machine mechanic sits on the machine's gripper shield after another tunnel boring machine cut through the bedrock.</p>
Gothamist
Slide 3 of 3
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